[1] Which one of the following forms the base of vegetable fibres?
A.
Cellulose
B.
Proteins
C.
Fats
D.
Oils
Ans:
Cellulose
Explanation :
The principal chemical component of vegetable fibers is cellulose, with varying amounts of lignin and hemicelluloses also usually present; thus, the fibers are also referred to as cellulosic or lignocellul osic. Examples include cotton, hemp, jute, flax, ramie, sisal, bagasse, and banana. Vegetable fibers are usually stiffer but less tough than synthetic fibers.
[2] Blood group was discovered by -
A.
Alexander Fleming
B.
William Harvey
C.
Landsteiner
D.
Paulov
Ans:
Landsteiner
Explanation :
Karl Landsteiner, an Austrian biologist and physician, is noted for having distinguished the main blood groups in 1900. He developed the modern system of classification of blood groups from his identification of the presence of agglutinins in the blood. In 1930, he received the Nobel Prize in Physiology or Medicine.
[3] In a rainforest, the vegetation that grows under the shade of a canopy is known as -
A.
Crown
B.
Canopy
C.
Understorey
D.
Forest floor
Ans:
Understorey
Explanation :
In ecology, understorey refers to a layer of vegetation beneath the main canopy of a forest. It comprises plant life growing beneath the forest canopy without penetrating it to any great extent, but above the forest floor. Only a small percentage of light penetrates the canopy so understory vegetation is generally shade tolerant.
[4] Clove is obtained from -
A.
Root
B.
Stem
C.
Leaves
D.
Flower buds
Ans:
Flower buds
Explanation :
Cloves are obtained from the aromatic flower buds of a tree in the family Myrtaceae, Syzygium aromaticum. Cloves ate the dried unopened flower buds and calyx tubes, harvested before the flowers have opened, of the clove tree. Cloves are collected when the flower bud is not yet open.
[5] Which of the following is the treatment of water pollution?
A.
Bag house filter
B.
Windrow composting
C.
Venturi scrubber
D.
Reverse Osmosis
Ans:
Reverse Osmosis
Explanation :
Reverse osmosis (RO) is a water purification technology that uses a semi permeable membrane to remove ions, molecules, and larger particles from drinking water. It can remove many types of dissolved and suspended species from water, including bacteria, and is used in both industrial processes and the production of potable water. It is most commonly known for its use in drinking water purification form.
[6] Which part of human body is affected by the ALZHEIMER'S disease?
A.
Heart
B.
Kidney
C.
Immune System
D.
Brain
Ans:
Brain
Explanation :
Alzheimer disease is an irreversible, progressive disorder in which brain cells (neurons) deteriorate, resulting in the loss of cognitive functions, primarily memory, judgment and reasoning, movement coordination and pattern recognition. It leads to nerve cell death and tissue loss throughout the brain.
[7] What do you call the study of fungi?
A.
Mycology
B.
Parasitology
C.
Bacteriology
D.
Ecology
Ans:
Mycology
Explanation :
Mycology is the branch of biology concerned with the study of fungi. It includes the study of fungi's genetic and biochemical properties, their taxonomy and their use to humans as a source for tinder, medicine, food, and entheogens, as well as their dangers, such as poisoning or infection
[8] Which of the following is the longest vein in the human body?
A.
Trochlear
B.
Inferior vena cava
C.
Saphenous vein
D.
Trigeminal
Ans:
Saphenous vein
Explanation :
The great saphenous vein, the major superficial vein of the medial leg and thigh, is the longest vein in the human body. It extends from the top of the foot to the upper thigh and groin, running along the length of the lower limb. It plays an important role in returning blood from the superficial tissues of the leg to the heart.
[9] Which word is common in the botanical names of trees like Ashoka, Tamarind or Coral?
A.
Terminalia
B.
Salmi
C.
Indica
D.
Acacia
Ans:
Indica
Explanation :
Tamarind tree (Tamarindus indica), Ashoka tree (Saraca Indica), Indian Coral tree (Erythrina Indica) have 'Indica' common in their botanical names. In biology/taxonomy, if a species originates in India, its scientific name sometimes includes "Indica".
[10] The part of brain which controls emotional reactions in our body is -
A.
Hypothalamus
B.
Cerebrum
C.
Meninges
D.
Thalamus
Ans:
Hypothalamus
Explanation :
The brain's limbic system controls emotional expression through the hypothalamus, which has control over the body's emotional responses systems. The hypothalamus is responsible for regulating hunger, thirst, response to pain, levels of pleasure, sexual satisfaction, anger and aggressive behavior, etc. It also regulates pulse, blood pressure, breathing, and arousal in response to emotional circumstances.
[11] To reduce tooth decay most toothpastes contain a -
A.
Bromide
B.
Fluoride
C.
Iodide
D.
Chloride
Ans:
Fluoride
Explanation :
Fluoride in toothpastes prevent tooth decay from progressing and can even reverse, or stop, early tooth decay. It works by promoting a chemical reaction in tooth enamel that draws in replacement minerals including calcium. Fluoride incorporates itself into enamel weakened by acid attack, making the tooth more resistant to future acid attacks.
[12] 'Red Data Book' provides an account of -
A.
Endangered plants only
B.
Fossil plants
C.
Endangered plants and animals
D.
Extinct animals only
Ans:
Endangered plants and animals
Explanation :
The Red Data Book is the state document established for documenting rare and endangered species of animals, plants and fungi as well as some local sub-species that exist within the territory of the state or country. This book provides central information for studies and monitoring programmes on rare and endangered species and their habits.
[13] First human heart transplant was performed in -
A.
1972
B.
1955
C.
1967
D.
1959
Ans:
1967
Explanation :
Christiaan Neethling Barnard was a South African cardiac surgeon who performed the world’s first successful human-to-human heart transplant. He performed the world’s first human heart transplant operation on 3 December 1967, in an operation assisted by his brother, Marius Barnard; the operation lasted nine hours and used a team of thirty people. The patient, Louis Washkansky, was a 54-year-old grocer, suffering from diabetes and incurable heart disease.
[14] Photoperiodism affects -
A.
All of these
B.
Flowering
C.
Vegetative growth
D.
Fruiting
Ans:
All of these
Explanation :
Photoperiodism is the developmental responses of plants to the relative lengths of light and dark periods. It affects the vegetative growth as well as the time of flowering and fruiting in plants. For example, some annual plants may be made to complete their life cycle twice in a year, while others can be made to take on characteristics of everlasting flowering species and continue to produce flowers and fruits on an indefinite period, while in yet other species the plant may continue vegetative development indefinitely without flowering.
[15] The least penetrating power ray is -
A.
X-Ray
B.
a-Ray
C.
B-Ray
D.
y-Ray
Ans:
a-Ray
Explanation :
Since alpha particles are high in ionizing power, it is difficult for them to penetrate matter thoroughly. This is because alpha particles are likely to ionize the first thing they come into contact with; thus, they hold a small range of penetrating power. Beta rays have intermediate; while, Gamma Rays and X Rays have maximum penetrating power.
[16] Which one of the following types of malaria is pernicious malaria?
A.
Vivax
B.
Ralapse
C.
Tertian
D.
Malignant
Ans:
Malignant
Explanation :
Pernicious malaria is always caused by Plasmodium falciparum and characterized by severe malarial paroxysms that recur about every 48 hours and often by acute cerebral, renal, or gastrointestinal manifestations. It is also called malignant tertian malaria.
[17] Lungs of a plant are -
A.
Leaves
B.
Stems
C.
Flowers
D.
Roots
Ans:
Leaves
Explanation :
Leaves are the lungs of plants. Much like the lungs of animals, leaves are the place of a plant's respiration. It is from leaves that oxygen is emitted during the light hours of the day and carbonic acid gas at night.
[18] Enzymes are -
A.
Proteins
B.
Minerals
C.
Oils
D.
Fatty acids
Ans:
Proteins
Explanation :
Enzymes are biological molecules (proteins) that act as catalysts and help complex reactions occur everywhere in life. They are in general globular proteins. They speed up reactions by providing an alternative reaction pathway of lower activation energy.
[19] The largest cells in mammalian blood are -
A.
Erythrocytes
B.
Monocytes
C.
Basophils
D.
Lymphocytes
Ans:
Monocytes
Explanation :
Various components of blood are: Plasma, Erythrocytes (Red Blood Cells), Leueocytes (White Blood Cells) and Thrombocyles/Platelets. Monocytes, also known as macrophages, are the largest blood cells in most mammals, measuring 10-15 m in diameter. They are leucocytes. Their nuclei are kidney-shaped and cytoplasm is abundant.
[20] Which acid is present in lemon?
A.
marlic acid
B.
citric acid
C.
lactic acid
D.
tartaric acid
Ans:
citric acid
Explanation :
Citric acid is a weak organic acid with the formula C6H8O7. The juice of the lemon is about 5% to 6% citric acid, which gives a sour taste.
[21] Which instrument is used for measuring humidity of atmosphere?
A.
Barometer
B.
Anemometer
C.
Thermometer
D.
Hygrometer
Ans:
Hygrometer
Explanation :
A hygrometer, also known as a psychrometer, is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is. Aside from greenhouses and industrial spaces, hygrometers are also used in some incubators, saunas, humidors and museums.
[22] Just born baby has the respiratory rate as -
A.
32 times/minute
B.
26 times/minute
C.
18 times/minute
D.
15 times/minute
Ans:
32 times/minute
Explanation :
New born babies and children normally breathe faster than older children and adults. Their respiratory rate is about 30-60 breaths per minute. The respiratory rate for the different age-categories of children is:-6-12 months: 24-30; 1-5 years: 20-30; 6-12 years: 12-20.
[23] Uric acid is the chief nitrogenous wastes in -
A.
Frogs
B.
Birds
C.
Fishes
D.
Mankind
Ans:
Birds
Explanation :
Land snails, insects, birds, and some reptiles excrete uric acid as the major nitrogenous waste. The white, crystalline substance seen in a typical bird or lizard "poop" is actually urine: a little pool of uric acid crystals in a very small amount of water.
[24] Who proposed Binomial Nomenclature?
A.
Linnaeus
B.
John Ray
C.
Huxley
D.
Aristotle
Ans:
Linnaeus
Explanation :
Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms. The formal introduction of this system of naming species is credited to Swedish natural scientist Carl Linnaeus, effectively beginning with his work ‘Species Plantarum’ in 1753.
[25] Who proposed Five Kingdom Classification?
A.
R.H. Whittaker
B.
John Ray
C.
Carolus Linnaeus
D.
H.F. Copeland
Ans:
R.H. Whittaker
Explanation :
R.H Whittaker proposed the five kingdom classification in 1969. Those five kingdoms are: Monera, Protista, Mycota (Fungi), Metaphyta (Plantae) and Metazoa (Animalia). It is the most accepted system of modern classification as the different groups of animals are placed phylogenetically.
Explanation :
The principal chemical component of vegetable fibers is cellulose, with varying amounts of lignin and hemicelluloses also usually present; thus, the fibers are also referred to as cellulosic or lignocellul osic. Examples include cotton, hemp, jute, flax, ramie, sisal, bagasse, and banana. Vegetable fibers are usually stiffer but less tough than synthetic fibers.
[2] Blood group was discovered by -
A.
Alexander Fleming
B.
William Harvey
C.
Landsteiner
D.
Paulov
Ans:
Landsteiner
Explanation :
Karl Landsteiner, an Austrian biologist and physician, is noted for having distinguished the main blood groups in 1900. He developed the modern system of classification of blood groups from his identification of the presence of agglutinins in the blood. In 1930, he received the Nobel Prize in Physiology or Medicine.
[3] In a rainforest, the vegetation that grows under the shade of a canopy is known as -
A.
Crown
B.
Canopy
C.
Understorey
D.
Forest floor
Ans:
Understorey
Explanation :
In ecology, understorey refers to a layer of vegetation beneath the main canopy of a forest. It comprises plant life growing beneath the forest canopy without penetrating it to any great extent, but above the forest floor. Only a small percentage of light penetrates the canopy so understory vegetation is generally shade tolerant.
[4] Clove is obtained from -
A.
Root
B.
Stem
C.
Leaves
D.
Flower buds
Ans:
Flower buds
Explanation :
Cloves are obtained from the aromatic flower buds of a tree in the family Myrtaceae, Syzygium aromaticum. Cloves ate the dried unopened flower buds and calyx tubes, harvested before the flowers have opened, of the clove tree. Cloves are collected when the flower bud is not yet open.
[5] Which of the following is the treatment of water pollution?
A.
Bag house filter
B.
Windrow composting
C.
Venturi scrubber
D.
Reverse Osmosis
Ans:
Reverse Osmosis
Explanation :
Reverse osmosis (RO) is a water purification technology that uses a semi permeable membrane to remove ions, molecules, and larger particles from drinking water. It can remove many types of dissolved and suspended species from water, including bacteria, and is used in both industrial processes and the production of potable water. It is most commonly known for its use in drinking water purification form.
[6] Which part of human body is affected by the ALZHEIMER'S disease?
A.
Heart
B.
Kidney
C.
Immune System
D.
Brain
Ans:
Brain
Explanation :
Alzheimer disease is an irreversible, progressive disorder in which brain cells (neurons) deteriorate, resulting in the loss of cognitive functions, primarily memory, judgment and reasoning, movement coordination and pattern recognition. It leads to nerve cell death and tissue loss throughout the brain.
[7] What do you call the study of fungi?
A.
Mycology
B.
Parasitology
C.
Bacteriology
D.
Ecology
Ans:
Mycology
Explanation :
Mycology is the branch of biology concerned with the study of fungi. It includes the study of fungi's genetic and biochemical properties, their taxonomy and their use to humans as a source for tinder, medicine, food, and entheogens, as well as their dangers, such as poisoning or infection
[8] Which of the following is the longest vein in the human body?
A.
Trochlear
B.
Inferior vena cava
C.
Saphenous vein
D.
Trigeminal
Ans:
Saphenous vein
Explanation :
The great saphenous vein, the major superficial vein of the medial leg and thigh, is the longest vein in the human body. It extends from the top of the foot to the upper thigh and groin, running along the length of the lower limb. It plays an important role in returning blood from the superficial tissues of the leg to the heart.
[9] Which word is common in the botanical names of trees like Ashoka, Tamarind or Coral?
A.
Terminalia
B.
Salmi
C.
Indica
D.
Acacia
Ans:
Indica
Explanation :
Tamarind tree (Tamarindus indica), Ashoka tree (Saraca Indica), Indian Coral tree (Erythrina Indica) have 'Indica' common in their botanical names. In biology/taxonomy, if a species originates in India, its scientific name sometimes includes "Indica".
[10] The part of brain which controls emotional reactions in our body is -
A.
Hypothalamus
B.
Cerebrum
C.
Meninges
D.
Thalamus
Ans:
Hypothalamus
Explanation :
The brain's limbic system controls emotional expression through the hypothalamus, which has control over the body's emotional responses systems. The hypothalamus is responsible for regulating hunger, thirst, response to pain, levels of pleasure, sexual satisfaction, anger and aggressive behavior, etc. It also regulates pulse, blood pressure, breathing, and arousal in response to emotional circumstances.
[11] To reduce tooth decay most toothpastes contain a -
A.
Bromide
B.
Fluoride
C.
Iodide
D.
Chloride
Ans:
Fluoride
Explanation :
Fluoride in toothpastes prevent tooth decay from progressing and can even reverse, or stop, early tooth decay. It works by promoting a chemical reaction in tooth enamel that draws in replacement minerals including calcium. Fluoride incorporates itself into enamel weakened by acid attack, making the tooth more resistant to future acid attacks.
[12] 'Red Data Book' provides an account of -
A.
Endangered plants only
B.
Fossil plants
C.
Endangered plants and animals
D.
Extinct animals only
Ans:
Endangered plants and animals
Explanation :
The Red Data Book is the state document established for documenting rare and endangered species of animals, plants and fungi as well as some local sub-species that exist within the territory of the state or country. This book provides central information for studies and monitoring programmes on rare and endangered species and their habits.
[13] First human heart transplant was performed in -
A.
1972
B.
1955
C.
1967
D.
1959
Ans:
1967
Explanation :
Christiaan Neethling Barnard was a South African cardiac surgeon who performed the world’s first successful human-to-human heart transplant. He performed the world’s first human heart transplant operation on 3 December 1967, in an operation assisted by his brother, Marius Barnard; the operation lasted nine hours and used a team of thirty people. The patient, Louis Washkansky, was a 54-year-old grocer, suffering from diabetes and incurable heart disease.
[14] Photoperiodism affects -
A.
All of these
B.
Flowering
C.
Vegetative growth
D.
Fruiting
Ans:
All of these
Explanation :
Photoperiodism is the developmental responses of plants to the relative lengths of light and dark periods. It affects the vegetative growth as well as the time of flowering and fruiting in plants. For example, some annual plants may be made to complete their life cycle twice in a year, while others can be made to take on characteristics of everlasting flowering species and continue to produce flowers and fruits on an indefinite period, while in yet other species the plant may continue vegetative development indefinitely without flowering.
[15] The least penetrating power ray is -
A.
X-Ray
B.
a-Ray
C.
B-Ray
D.
y-Ray
Ans:
a-Ray
Explanation :
Since alpha particles are high in ionizing power, it is difficult for them to penetrate matter thoroughly. This is because alpha particles are likely to ionize the first thing they come into contact with; thus, they hold a small range of penetrating power. Beta rays have intermediate; while, Gamma Rays and X Rays have maximum penetrating power.
[16] Which one of the following types of malaria is pernicious malaria?
A.
Vivax
B.
Ralapse
C.
Tertian
D.
Malignant
Ans:
Malignant
Explanation :
Pernicious malaria is always caused by Plasmodium falciparum and characterized by severe malarial paroxysms that recur about every 48 hours and often by acute cerebral, renal, or gastrointestinal manifestations. It is also called malignant tertian malaria.
[17] Lungs of a plant are -
A.
Leaves
B.
Stems
C.
Flowers
D.
Roots
Ans:
Leaves
Explanation :
Leaves are the lungs of plants. Much like the lungs of animals, leaves are the place of a plant's respiration. It is from leaves that oxygen is emitted during the light hours of the day and carbonic acid gas at night.
[18] Enzymes are -
A.
Proteins
B.
Minerals
C.
Oils
D.
Fatty acids
Ans:
Proteins
Explanation :
Enzymes are biological molecules (proteins) that act as catalysts and help complex reactions occur everywhere in life. They are in general globular proteins. They speed up reactions by providing an alternative reaction pathway of lower activation energy.
[19] The largest cells in mammalian blood are -
A.
Erythrocytes
B.
Monocytes
C.
Basophils
D.
Lymphocytes
Ans:
Monocytes
Explanation :
Various components of blood are: Plasma, Erythrocytes (Red Blood Cells), Leueocytes (White Blood Cells) and Thrombocyles/Platelets. Monocytes, also known as macrophages, are the largest blood cells in most mammals, measuring 10-15 m in diameter. They are leucocytes. Their nuclei are kidney-shaped and cytoplasm is abundant.
[20] Which acid is present in lemon?
A.
marlic acid
B.
citric acid
C.
lactic acid
D.
tartaric acid
Ans:
citric acid
Explanation :
Citric acid is a weak organic acid with the formula C6H8O7. The juice of the lemon is about 5% to 6% citric acid, which gives a sour taste.
[21] Which instrument is used for measuring humidity of atmosphere?
A.
Barometer
B.
Anemometer
C.
Thermometer
D.
Hygrometer
Ans:
Hygrometer
Explanation :
A hygrometer, also known as a psychrometer, is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is. Aside from greenhouses and industrial spaces, hygrometers are also used in some incubators, saunas, humidors and museums.
[22] Just born baby has the respiratory rate as -
A.
32 times/minute
B.
26 times/minute
C.
18 times/minute
D.
15 times/minute
Ans:
32 times/minute
Explanation :
New born babies and children normally breathe faster than older children and adults. Their respiratory rate is about 30-60 breaths per minute. The respiratory rate for the different age-categories of children is:-6-12 months: 24-30; 1-5 years: 20-30; 6-12 years: 12-20.
[23] Uric acid is the chief nitrogenous wastes in -
A.
Frogs
B.
Birds
C.
Fishes
D.
Mankind
Ans:
Birds
Explanation :
Land snails, insects, birds, and some reptiles excrete uric acid as the major nitrogenous waste. The white, crystalline substance seen in a typical bird or lizard "poop" is actually urine: a little pool of uric acid crystals in a very small amount of water.
[24] Who proposed Binomial Nomenclature?
A.
Linnaeus
B.
John Ray
C.
Huxley
D.
Aristotle
Ans:
Linnaeus
Explanation :
Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms. The formal introduction of this system of naming species is credited to Swedish natural scientist Carl Linnaeus, effectively beginning with his work ‘Species Plantarum’ in 1753.
[25] Who proposed Five Kingdom Classification?
A.
R.H. Whittaker
B.
John Ray
C.
Carolus Linnaeus
D.
H.F. Copeland
Ans:
R.H. Whittaker
Explanation :
R.H Whittaker proposed the five kingdom classification in 1969. Those five kingdoms are: Monera, Protista, Mycota (Fungi), Metaphyta (Plantae) and Metazoa (Animalia). It is the most accepted system of modern classification as the different groups of animals are placed phylogenetically.
Explanation :
In ecology, understorey refers to a layer of vegetation beneath the main canopy of a forest. It comprises plant life growing beneath the forest canopy without penetrating it to any great extent, but above the forest floor. Only a small percentage of light penetrates the canopy so understory vegetation is generally shade tolerant.
[4] Clove is obtained from -
A.
Root
B.
Stem
C.
Leaves
D.
Flower buds
Ans:
Flower buds
Explanation :
Cloves are obtained from the aromatic flower buds of a tree in the family Myrtaceae, Syzygium aromaticum. Cloves ate the dried unopened flower buds and calyx tubes, harvested before the flowers have opened, of the clove tree. Cloves are collected when the flower bud is not yet open.
[5] Which of the following is the treatment of water pollution?
A.
Bag house filter
B.
Windrow composting
C.
Venturi scrubber
D.
Reverse Osmosis
Ans:
Reverse Osmosis
Explanation :
Reverse osmosis (RO) is a water purification technology that uses a semi permeable membrane to remove ions, molecules, and larger particles from drinking water. It can remove many types of dissolved and suspended species from water, including bacteria, and is used in both industrial processes and the production of potable water. It is most commonly known for its use in drinking water purification form.
[6] Which part of human body is affected by the ALZHEIMER'S disease?
A.
Heart
B.
Kidney
C.
Immune System
D.
Brain
Ans:
Brain
Explanation :
Alzheimer disease is an irreversible, progressive disorder in which brain cells (neurons) deteriorate, resulting in the loss of cognitive functions, primarily memory, judgment and reasoning, movement coordination and pattern recognition. It leads to nerve cell death and tissue loss throughout the brain.
[7] What do you call the study of fungi?
A.
Mycology
B.
Parasitology
C.
Bacteriology
D.
Ecology
Ans:
Mycology
Explanation :
Mycology is the branch of biology concerned with the study of fungi. It includes the study of fungi's genetic and biochemical properties, their taxonomy and their use to humans as a source for tinder, medicine, food, and entheogens, as well as their dangers, such as poisoning or infection
[8] Which of the following is the longest vein in the human body?
A.
Trochlear
B.
Inferior vena cava
C.
Saphenous vein
D.
Trigeminal
Ans:
Saphenous vein
Explanation :
The great saphenous vein, the major superficial vein of the medial leg and thigh, is the longest vein in the human body. It extends from the top of the foot to the upper thigh and groin, running along the length of the lower limb. It plays an important role in returning blood from the superficial tissues of the leg to the heart.
[9] Which word is common in the botanical names of trees like Ashoka, Tamarind or Coral?
A.
Terminalia
B.
Salmi
C.
Indica
D.
Acacia
Ans:
Indica
Explanation :
Tamarind tree (Tamarindus indica), Ashoka tree (Saraca Indica), Indian Coral tree (Erythrina Indica) have 'Indica' common in their botanical names. In biology/taxonomy, if a species originates in India, its scientific name sometimes includes "Indica".
[10] The part of brain which controls emotional reactions in our body is -
A.
Hypothalamus
B.
Cerebrum
C.
Meninges
D.
Thalamus
Ans:
Hypothalamus
Explanation :
The brain's limbic system controls emotional expression through the hypothalamus, which has control over the body's emotional responses systems. The hypothalamus is responsible for regulating hunger, thirst, response to pain, levels of pleasure, sexual satisfaction, anger and aggressive behavior, etc. It also regulates pulse, blood pressure, breathing, and arousal in response to emotional circumstances.
[11] To reduce tooth decay most toothpastes contain a -
A.
Bromide
B.
Fluoride
C.
Iodide
D.
Chloride
Ans:
Fluoride
Explanation :
Fluoride in toothpastes prevent tooth decay from progressing and can even reverse, or stop, early tooth decay. It works by promoting a chemical reaction in tooth enamel that draws in replacement minerals including calcium. Fluoride incorporates itself into enamel weakened by acid attack, making the tooth more resistant to future acid attacks.
[12] 'Red Data Book' provides an account of -
A.
Endangered plants only
B.
Fossil plants
C.
Endangered plants and animals
D.
Extinct animals only
Ans:
Endangered plants and animals
Explanation :
The Red Data Book is the state document established for documenting rare and endangered species of animals, plants and fungi as well as some local sub-species that exist within the territory of the state or country. This book provides central information for studies and monitoring programmes on rare and endangered species and their habits.
[13] First human heart transplant was performed in -
A.
1972
B.
1955
C.
1967
D.
1959
Ans:
1967
Explanation :
Christiaan Neethling Barnard was a South African cardiac surgeon who performed the world’s first successful human-to-human heart transplant. He performed the world’s first human heart transplant operation on 3 December 1967, in an operation assisted by his brother, Marius Barnard; the operation lasted nine hours and used a team of thirty people. The patient, Louis Washkansky, was a 54-year-old grocer, suffering from diabetes and incurable heart disease.
[14] Photoperiodism affects -
A.
All of these
B.
Flowering
C.
Vegetative growth
D.
Fruiting
Ans:
All of these
Explanation :
Photoperiodism is the developmental responses of plants to the relative lengths of light and dark periods. It affects the vegetative growth as well as the time of flowering and fruiting in plants. For example, some annual plants may be made to complete their life cycle twice in a year, while others can be made to take on characteristics of everlasting flowering species and continue to produce flowers and fruits on an indefinite period, while in yet other species the plant may continue vegetative development indefinitely without flowering.
[15] The least penetrating power ray is -
A.
X-Ray
B.
a-Ray
C.
B-Ray
D.
y-Ray
Ans:
a-Ray
Explanation :
Since alpha particles are high in ionizing power, it is difficult for them to penetrate matter thoroughly. This is because alpha particles are likely to ionize the first thing they come into contact with; thus, they hold a small range of penetrating power. Beta rays have intermediate; while, Gamma Rays and X Rays have maximum penetrating power.
[16] Which one of the following types of malaria is pernicious malaria?
A.
Vivax
B.
Ralapse
C.
Tertian
D.
Malignant
Ans:
Malignant
Explanation :
Pernicious malaria is always caused by Plasmodium falciparum and characterized by severe malarial paroxysms that recur about every 48 hours and often by acute cerebral, renal, or gastrointestinal manifestations. It is also called malignant tertian malaria.
[17] Lungs of a plant are -
A.
Leaves
B.
Stems
C.
Flowers
D.
Roots
Ans:
Leaves
Explanation :
Leaves are the lungs of plants. Much like the lungs of animals, leaves are the place of a plant's respiration. It is from leaves that oxygen is emitted during the light hours of the day and carbonic acid gas at night.
[18] Enzymes are -
A.
Proteins
B.
Minerals
C.
Oils
D.
Fatty acids
Ans:
Proteins
Explanation :
Enzymes are biological molecules (proteins) that act as catalysts and help complex reactions occur everywhere in life. They are in general globular proteins. They speed up reactions by providing an alternative reaction pathway of lower activation energy.
[19] The largest cells in mammalian blood are -
A.
Erythrocytes
B.
Monocytes
C.
Basophils
D.
Lymphocytes
Ans:
Monocytes
Explanation :
Various components of blood are: Plasma, Erythrocytes (Red Blood Cells), Leueocytes (White Blood Cells) and Thrombocyles/Platelets. Monocytes, also known as macrophages, are the largest blood cells in most mammals, measuring 10-15 m in diameter. They are leucocytes. Their nuclei are kidney-shaped and cytoplasm is abundant.
[20] Which acid is present in lemon?
A.
marlic acid
B.
citric acid
C.
lactic acid
D.
tartaric acid
Ans:
citric acid
Explanation :
Citric acid is a weak organic acid with the formula C6H8O7. The juice of the lemon is about 5% to 6% citric acid, which gives a sour taste.
[21] Which instrument is used for measuring humidity of atmosphere?
A.
Barometer
B.
Anemometer
C.
Thermometer
D.
Hygrometer
Ans:
Hygrometer
Explanation :
A hygrometer, also known as a psychrometer, is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is. Aside from greenhouses and industrial spaces, hygrometers are also used in some incubators, saunas, humidors and museums.
[22] Just born baby has the respiratory rate as -
A.
32 times/minute
B.
26 times/minute
C.
18 times/minute
D.
15 times/minute
Ans:
32 times/minute
Explanation :
New born babies and children normally breathe faster than older children and adults. Their respiratory rate is about 30-60 breaths per minute. The respiratory rate for the different age-categories of children is:-6-12 months: 24-30; 1-5 years: 20-30; 6-12 years: 12-20.
[23] Uric acid is the chief nitrogenous wastes in -
A.
Frogs
B.
Birds
C.
Fishes
D.
Mankind
Ans:
Birds
Explanation :
Land snails, insects, birds, and some reptiles excrete uric acid as the major nitrogenous waste. The white, crystalline substance seen in a typical bird or lizard "poop" is actually urine: a little pool of uric acid crystals in a very small amount of water.
[24] Who proposed Binomial Nomenclature?
A.
Linnaeus
B.
John Ray
C.
Huxley
D.
Aristotle
Ans:
Linnaeus
Explanation :
Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms. The formal introduction of this system of naming species is credited to Swedish natural scientist Carl Linnaeus, effectively beginning with his work ‘Species Plantarum’ in 1753.
[25] Who proposed Five Kingdom Classification?
A.
R.H. Whittaker
B.
John Ray
C.
Carolus Linnaeus
D.
H.F. Copeland
Ans:
R.H. Whittaker
Explanation :
R.H Whittaker proposed the five kingdom classification in 1969. Those five kingdoms are: Monera, Protista, Mycota (Fungi), Metaphyta (Plantae) and Metazoa (Animalia). It is the most accepted system of modern classification as the different groups of animals are placed phylogenetically.
Explanation :
Reverse osmosis (RO) is a water purification technology that uses a semi permeable membrane to remove ions, molecules, and larger particles from drinking water. It can remove many types of dissolved and suspended species from water, including bacteria, and is used in both industrial processes and the production of potable water. It is most commonly known for its use in drinking water purification form.
[6] Which part of human body is affected by the ALZHEIMER'S disease?
A.
Heart
B.
Kidney
C.
Immune System
D.
Brain
Ans:
Brain
Explanation :
Alzheimer disease is an irreversible, progressive disorder in which brain cells (neurons) deteriorate, resulting in the loss of cognitive functions, primarily memory, judgment and reasoning, movement coordination and pattern recognition. It leads to nerve cell death and tissue loss throughout the brain.
[7] What do you call the study of fungi?
A.
Mycology
B.
Parasitology
C.
Bacteriology
D.
Ecology
Ans:
Mycology
Explanation :
Mycology is the branch of biology concerned with the study of fungi. It includes the study of fungi's genetic and biochemical properties, their taxonomy and their use to humans as a source for tinder, medicine, food, and entheogens, as well as their dangers, such as poisoning or infection
[8] Which of the following is the longest vein in the human body?
A.
Trochlear
B.
Inferior vena cava
C.
Saphenous vein
D.
Trigeminal
Ans:
Saphenous vein
Explanation :
The great saphenous vein, the major superficial vein of the medial leg and thigh, is the longest vein in the human body. It extends from the top of the foot to the upper thigh and groin, running along the length of the lower limb. It plays an important role in returning blood from the superficial tissues of the leg to the heart.
[9] Which word is common in the botanical names of trees like Ashoka, Tamarind or Coral?
A.
Terminalia
B.
Salmi
C.
Indica
D.
Acacia
Ans:
Indica
Explanation :
Tamarind tree (Tamarindus indica), Ashoka tree (Saraca Indica), Indian Coral tree (Erythrina Indica) have 'Indica' common in their botanical names. In biology/taxonomy, if a species originates in India, its scientific name sometimes includes "Indica".
[10] The part of brain which controls emotional reactions in our body is -
A.
Hypothalamus
B.
Cerebrum
C.
Meninges
D.
Thalamus
Ans:
Hypothalamus
Explanation :
The brain's limbic system controls emotional expression through the hypothalamus, which has control over the body's emotional responses systems. The hypothalamus is responsible for regulating hunger, thirst, response to pain, levels of pleasure, sexual satisfaction, anger and aggressive behavior, etc. It also regulates pulse, blood pressure, breathing, and arousal in response to emotional circumstances.
[11] To reduce tooth decay most toothpastes contain a -
A.
Bromide
B.
Fluoride
C.
Iodide
D.
Chloride
Ans:
Fluoride
Explanation :
Fluoride in toothpastes prevent tooth decay from progressing and can even reverse, or stop, early tooth decay. It works by promoting a chemical reaction in tooth enamel that draws in replacement minerals including calcium. Fluoride incorporates itself into enamel weakened by acid attack, making the tooth more resistant to future acid attacks.
[12] 'Red Data Book' provides an account of -
A.
Endangered plants only
B.
Fossil plants
C.
Endangered plants and animals
D.
Extinct animals only
Ans:
Endangered plants and animals
Explanation :
The Red Data Book is the state document established for documenting rare and endangered species of animals, plants and fungi as well as some local sub-species that exist within the territory of the state or country. This book provides central information for studies and monitoring programmes on rare and endangered species and their habits.
[13] First human heart transplant was performed in -
A.
1972
B.
1955
C.
1967
D.
1959
Ans:
1967
Explanation :
Christiaan Neethling Barnard was a South African cardiac surgeon who performed the world’s first successful human-to-human heart transplant. He performed the world’s first human heart transplant operation on 3 December 1967, in an operation assisted by his brother, Marius Barnard; the operation lasted nine hours and used a team of thirty people. The patient, Louis Washkansky, was a 54-year-old grocer, suffering from diabetes and incurable heart disease.
[14] Photoperiodism affects -
A.
All of these
B.
Flowering
C.
Vegetative growth
D.
Fruiting
Ans:
All of these
Explanation :
Photoperiodism is the developmental responses of plants to the relative lengths of light and dark periods. It affects the vegetative growth as well as the time of flowering and fruiting in plants. For example, some annual plants may be made to complete their life cycle twice in a year, while others can be made to take on characteristics of everlasting flowering species and continue to produce flowers and fruits on an indefinite period, while in yet other species the plant may continue vegetative development indefinitely without flowering.
[15] The least penetrating power ray is -
A.
X-Ray
B.
a-Ray
C.
B-Ray
D.
y-Ray
Ans:
a-Ray
Explanation :
Since alpha particles are high in ionizing power, it is difficult for them to penetrate matter thoroughly. This is because alpha particles are likely to ionize the first thing they come into contact with; thus, they hold a small range of penetrating power. Beta rays have intermediate; while, Gamma Rays and X Rays have maximum penetrating power.
[16] Which one of the following types of malaria is pernicious malaria?
A.
Vivax
B.
Ralapse
C.
Tertian
D.
Malignant
Ans:
Malignant
Explanation :
Pernicious malaria is always caused by Plasmodium falciparum and characterized by severe malarial paroxysms that recur about every 48 hours and often by acute cerebral, renal, or gastrointestinal manifestations. It is also called malignant tertian malaria.
[17] Lungs of a plant are -
A.
Leaves
B.
Stems
C.
Flowers
D.
Roots
Ans:
Leaves
Explanation :
Leaves are the lungs of plants. Much like the lungs of animals, leaves are the place of a plant's respiration. It is from leaves that oxygen is emitted during the light hours of the day and carbonic acid gas at night.
[18] Enzymes are -
A.
Proteins
B.
Minerals
C.
Oils
D.
Fatty acids
Ans:
Proteins
Explanation :
Enzymes are biological molecules (proteins) that act as catalysts and help complex reactions occur everywhere in life. They are in general globular proteins. They speed up reactions by providing an alternative reaction pathway of lower activation energy.
[19] The largest cells in mammalian blood are -
A.
Erythrocytes
B.
Monocytes
C.
Basophils
D.
Lymphocytes
Ans:
Monocytes
Explanation :
Various components of blood are: Plasma, Erythrocytes (Red Blood Cells), Leueocytes (White Blood Cells) and Thrombocyles/Platelets. Monocytes, also known as macrophages, are the largest blood cells in most mammals, measuring 10-15 m in diameter. They are leucocytes. Their nuclei are kidney-shaped and cytoplasm is abundant.
[20] Which acid is present in lemon?
A.
marlic acid
B.
citric acid
C.
lactic acid
D.
tartaric acid
Ans:
citric acid
Explanation :
Citric acid is a weak organic acid with the formula C6H8O7. The juice of the lemon is about 5% to 6% citric acid, which gives a sour taste.
[21] Which instrument is used for measuring humidity of atmosphere?
A.
Barometer
B.
Anemometer
C.
Thermometer
D.
Hygrometer
Ans:
Hygrometer
Explanation :
A hygrometer, also known as a psychrometer, is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is. Aside from greenhouses and industrial spaces, hygrometers are also used in some incubators, saunas, humidors and museums.
[22] Just born baby has the respiratory rate as -
A.
32 times/minute
B.
26 times/minute
C.
18 times/minute
D.
15 times/minute
Ans:
32 times/minute
Explanation :
New born babies and children normally breathe faster than older children and adults. Their respiratory rate is about 30-60 breaths per minute. The respiratory rate for the different age-categories of children is:-6-12 months: 24-30; 1-5 years: 20-30; 6-12 years: 12-20.
[23] Uric acid is the chief nitrogenous wastes in -
A.
Frogs
B.
Birds
C.
Fishes
D.
Mankind
Ans:
Birds
Explanation :
Land snails, insects, birds, and some reptiles excrete uric acid as the major nitrogenous waste. The white, crystalline substance seen in a typical bird or lizard "poop" is actually urine: a little pool of uric acid crystals in a very small amount of water.
[24] Who proposed Binomial Nomenclature?
A.
Linnaeus
B.
John Ray
C.
Huxley
D.
Aristotle
Ans:
Linnaeus
Explanation :
Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms. The formal introduction of this system of naming species is credited to Swedish natural scientist Carl Linnaeus, effectively beginning with his work ‘Species Plantarum’ in 1753.
[25] Who proposed Five Kingdom Classification?
A.
R.H. Whittaker
B.
John Ray
C.
Carolus Linnaeus
D.
H.F. Copeland
Ans:
R.H. Whittaker
Explanation :
R.H Whittaker proposed the five kingdom classification in 1969. Those five kingdoms are: Monera, Protista, Mycota (Fungi), Metaphyta (Plantae) and Metazoa (Animalia). It is the most accepted system of modern classification as the different groups of animals are placed phylogenetically.
Explanation :
Mycology is the branch of biology concerned with the study of fungi. It includes the study of fungi's genetic and biochemical properties, their taxonomy and their use to humans as a source for tinder, medicine, food, and entheogens, as well as their dangers, such as poisoning or infection
[8] Which of the following is the longest vein in the human body?
A.
Trochlear
B.
Inferior vena cava
C.
Saphenous vein
D.
Trigeminal
Ans:
Saphenous vein
Explanation :
The great saphenous vein, the major superficial vein of the medial leg and thigh, is the longest vein in the human body. It extends from the top of the foot to the upper thigh and groin, running along the length of the lower limb. It plays an important role in returning blood from the superficial tissues of the leg to the heart.
[9] Which word is common in the botanical names of trees like Ashoka, Tamarind or Coral?
A.
Terminalia
B.
Salmi
C.
Indica
D.
Acacia
Ans:
Indica
Explanation :
Tamarind tree (Tamarindus indica), Ashoka tree (Saraca Indica), Indian Coral tree (Erythrina Indica) have 'Indica' common in their botanical names. In biology/taxonomy, if a species originates in India, its scientific name sometimes includes "Indica".
[10] The part of brain which controls emotional reactions in our body is -
A.
Hypothalamus
B.
Cerebrum
C.
Meninges
D.
Thalamus
Ans:
Hypothalamus
Explanation :
The brain's limbic system controls emotional expression through the hypothalamus, which has control over the body's emotional responses systems. The hypothalamus is responsible for regulating hunger, thirst, response to pain, levels of pleasure, sexual satisfaction, anger and aggressive behavior, etc. It also regulates pulse, blood pressure, breathing, and arousal in response to emotional circumstances.
[11] To reduce tooth decay most toothpastes contain a -
A.
Bromide
B.
Fluoride
C.
Iodide
D.
Chloride
Ans:
Fluoride
Explanation :
Fluoride in toothpastes prevent tooth decay from progressing and can even reverse, or stop, early tooth decay. It works by promoting a chemical reaction in tooth enamel that draws in replacement minerals including calcium. Fluoride incorporates itself into enamel weakened by acid attack, making the tooth more resistant to future acid attacks.
[12] 'Red Data Book' provides an account of -
A.
Endangered plants only
B.
Fossil plants
C.
Endangered plants and animals
D.
Extinct animals only
Ans:
Endangered plants and animals
Explanation :
The Red Data Book is the state document established for documenting rare and endangered species of animals, plants and fungi as well as some local sub-species that exist within the territory of the state or country. This book provides central information for studies and monitoring programmes on rare and endangered species and their habits.
[13] First human heart transplant was performed in -
A.
1972
B.
1955
C.
1967
D.
1959
Ans:
1967
Explanation :
Christiaan Neethling Barnard was a South African cardiac surgeon who performed the world’s first successful human-to-human heart transplant. He performed the world’s first human heart transplant operation on 3 December 1967, in an operation assisted by his brother, Marius Barnard; the operation lasted nine hours and used a team of thirty people. The patient, Louis Washkansky, was a 54-year-old grocer, suffering from diabetes and incurable heart disease.
[14] Photoperiodism affects -
A.
All of these
B.
Flowering
C.
Vegetative growth
D.
Fruiting
Ans:
All of these
Explanation :
Photoperiodism is the developmental responses of plants to the relative lengths of light and dark periods. It affects the vegetative growth as well as the time of flowering and fruiting in plants. For example, some annual plants may be made to complete their life cycle twice in a year, while others can be made to take on characteristics of everlasting flowering species and continue to produce flowers and fruits on an indefinite period, while in yet other species the plant may continue vegetative development indefinitely without flowering.
[15] The least penetrating power ray is -
A.
X-Ray
B.
a-Ray
C.
B-Ray
D.
y-Ray
Ans:
a-Ray
Explanation :
Since alpha particles are high in ionizing power, it is difficult for them to penetrate matter thoroughly. This is because alpha particles are likely to ionize the first thing they come into contact with; thus, they hold a small range of penetrating power. Beta rays have intermediate; while, Gamma Rays and X Rays have maximum penetrating power.
[16] Which one of the following types of malaria is pernicious malaria?
A.
Vivax
B.
Ralapse
C.
Tertian
D.
Malignant
Ans:
Malignant
Explanation :
Pernicious malaria is always caused by Plasmodium falciparum and characterized by severe malarial paroxysms that recur about every 48 hours and often by acute cerebral, renal, or gastrointestinal manifestations. It is also called malignant tertian malaria.
[17] Lungs of a plant are -
A.
Leaves
B.
Stems
C.
Flowers
D.
Roots
Ans:
Leaves
Explanation :
Leaves are the lungs of plants. Much like the lungs of animals, leaves are the place of a plant's respiration. It is from leaves that oxygen is emitted during the light hours of the day and carbonic acid gas at night.
[18] Enzymes are -
A.
Proteins
B.
Minerals
C.
Oils
D.
Fatty acids
Ans:
Proteins
Explanation :
Enzymes are biological molecules (proteins) that act as catalysts and help complex reactions occur everywhere in life. They are in general globular proteins. They speed up reactions by providing an alternative reaction pathway of lower activation energy.
[19] The largest cells in mammalian blood are -
A.
Erythrocytes
B.
Monocytes
C.
Basophils
D.
Lymphocytes
Ans:
Monocytes
Explanation :
Various components of blood are: Plasma, Erythrocytes (Red Blood Cells), Leueocytes (White Blood Cells) and Thrombocyles/Platelets. Monocytes, also known as macrophages, are the largest blood cells in most mammals, measuring 10-15 m in diameter. They are leucocytes. Their nuclei are kidney-shaped and cytoplasm is abundant.
[20] Which acid is present in lemon?
A.
marlic acid
B.
citric acid
C.
lactic acid
D.
tartaric acid
Ans:
citric acid
Explanation :
Citric acid is a weak organic acid with the formula C6H8O7. The juice of the lemon is about 5% to 6% citric acid, which gives a sour taste.
[21] Which instrument is used for measuring humidity of atmosphere?
A.
Barometer
B.
Anemometer
C.
Thermometer
D.
Hygrometer
Ans:
Hygrometer
Explanation :
A hygrometer, also known as a psychrometer, is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is. Aside from greenhouses and industrial spaces, hygrometers are also used in some incubators, saunas, humidors and museums.
[22] Just born baby has the respiratory rate as -
A.
32 times/minute
B.
26 times/minute
C.
18 times/minute
D.
15 times/minute
Ans:
32 times/minute
Explanation :
New born babies and children normally breathe faster than older children and adults. Their respiratory rate is about 30-60 breaths per minute. The respiratory rate for the different age-categories of children is:-6-12 months: 24-30; 1-5 years: 20-30; 6-12 years: 12-20.
[23] Uric acid is the chief nitrogenous wastes in -
A.
Frogs
B.
Birds
C.
Fishes
D.
Mankind
Ans:
Birds
Explanation :
Land snails, insects, birds, and some reptiles excrete uric acid as the major nitrogenous waste. The white, crystalline substance seen in a typical bird or lizard "poop" is actually urine: a little pool of uric acid crystals in a very small amount of water.
[24] Who proposed Binomial Nomenclature?
A.
Linnaeus
B.
John Ray
C.
Huxley
D.
Aristotle
Ans:
Linnaeus
Explanation :
Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms. The formal introduction of this system of naming species is credited to Swedish natural scientist Carl Linnaeus, effectively beginning with his work ‘Species Plantarum’ in 1753.
[25] Who proposed Five Kingdom Classification?
A.
R.H. Whittaker
B.
John Ray
C.
Carolus Linnaeus
D.
H.F. Copeland
Ans:
R.H. Whittaker
Explanation :
R.H Whittaker proposed the five kingdom classification in 1969. Those five kingdoms are: Monera, Protista, Mycota (Fungi), Metaphyta (Plantae) and Metazoa (Animalia). It is the most accepted system of modern classification as the different groups of animals are placed phylogenetically.
Explanation :
Tamarind tree (Tamarindus indica), Ashoka tree (Saraca Indica), Indian Coral tree (Erythrina Indica) have 'Indica' common in their botanical names. In biology/taxonomy, if a species originates in India, its scientific name sometimes includes "Indica".
[10] The part of brain which controls emotional reactions in our body is -
A.
Hypothalamus
B.
Cerebrum
C.
Meninges
D.
Thalamus
Ans:
Hypothalamus
Explanation :
The brain's limbic system controls emotional expression through the hypothalamus, which has control over the body's emotional responses systems. The hypothalamus is responsible for regulating hunger, thirst, response to pain, levels of pleasure, sexual satisfaction, anger and aggressive behavior, etc. It also regulates pulse, blood pressure, breathing, and arousal in response to emotional circumstances.
[11] To reduce tooth decay most toothpastes contain a -
A.
Bromide
B.
Fluoride
C.
Iodide
D.
Chloride
Ans:
Fluoride
Explanation :
Fluoride in toothpastes prevent tooth decay from progressing and can even reverse, or stop, early tooth decay. It works by promoting a chemical reaction in tooth enamel that draws in replacement minerals including calcium. Fluoride incorporates itself into enamel weakened by acid attack, making the tooth more resistant to future acid attacks.
[12] 'Red Data Book' provides an account of -
A.
Endangered plants only
B.
Fossil plants
C.
Endangered plants and animals
D.
Extinct animals only
Ans:
Endangered plants and animals
Explanation :
The Red Data Book is the state document established for documenting rare and endangered species of animals, plants and fungi as well as some local sub-species that exist within the territory of the state or country. This book provides central information for studies and monitoring programmes on rare and endangered species and their habits.
[13] First human heart transplant was performed in -
A.
1972
B.
1955
C.
1967
D.
1959
Ans:
1967
Explanation :
Christiaan Neethling Barnard was a South African cardiac surgeon who performed the world’s first successful human-to-human heart transplant. He performed the world’s first human heart transplant operation on 3 December 1967, in an operation assisted by his brother, Marius Barnard; the operation lasted nine hours and used a team of thirty people. The patient, Louis Washkansky, was a 54-year-old grocer, suffering from diabetes and incurable heart disease.
[14] Photoperiodism affects -
A.
All of these
B.
Flowering
C.
Vegetative growth
D.
Fruiting
Ans:
All of these
Explanation :
Photoperiodism is the developmental responses of plants to the relative lengths of light and dark periods. It affects the vegetative growth as well as the time of flowering and fruiting in plants. For example, some annual plants may be made to complete their life cycle twice in a year, while others can be made to take on characteristics of everlasting flowering species and continue to produce flowers and fruits on an indefinite period, while in yet other species the plant may continue vegetative development indefinitely without flowering.
[15] The least penetrating power ray is -
A.
X-Ray
B.
a-Ray
C.
B-Ray
D.
y-Ray
Ans:
a-Ray
Explanation :
Since alpha particles are high in ionizing power, it is difficult for them to penetrate matter thoroughly. This is because alpha particles are likely to ionize the first thing they come into contact with; thus, they hold a small range of penetrating power. Beta rays have intermediate; while, Gamma Rays and X Rays have maximum penetrating power.
[16] Which one of the following types of malaria is pernicious malaria?
A.
Vivax
B.
Ralapse
C.
Tertian
D.
Malignant
Ans:
Malignant
Explanation :
Pernicious malaria is always caused by Plasmodium falciparum and characterized by severe malarial paroxysms that recur about every 48 hours and often by acute cerebral, renal, or gastrointestinal manifestations. It is also called malignant tertian malaria.
[17] Lungs of a plant are -
A.
Leaves
B.
Stems
C.
Flowers
D.
Roots
Ans:
Leaves
Explanation :
Leaves are the lungs of plants. Much like the lungs of animals, leaves are the place of a plant's respiration. It is from leaves that oxygen is emitted during the light hours of the day and carbonic acid gas at night.
[18] Enzymes are -
A.
Proteins
B.
Minerals
C.
Oils
D.
Fatty acids
Ans:
Proteins
Explanation :
Enzymes are biological molecules (proteins) that act as catalysts and help complex reactions occur everywhere in life. They are in general globular proteins. They speed up reactions by providing an alternative reaction pathway of lower activation energy.
[19] The largest cells in mammalian blood are -
A.
Erythrocytes
B.
Monocytes
C.
Basophils
D.
Lymphocytes
Ans:
Monocytes
Explanation :
Various components of blood are: Plasma, Erythrocytes (Red Blood Cells), Leueocytes (White Blood Cells) and Thrombocyles/Platelets. Monocytes, also known as macrophages, are the largest blood cells in most mammals, measuring 10-15 m in diameter. They are leucocytes. Their nuclei are kidney-shaped and cytoplasm is abundant.
[20] Which acid is present in lemon?
A.
marlic acid
B.
citric acid
C.
lactic acid
D.
tartaric acid
Ans:
citric acid
Explanation :
Citric acid is a weak organic acid with the formula C6H8O7. The juice of the lemon is about 5% to 6% citric acid, which gives a sour taste.
[21] Which instrument is used for measuring humidity of atmosphere?
A.
Barometer
B.
Anemometer
C.
Thermometer
D.
Hygrometer
Ans:
Hygrometer
Explanation :
A hygrometer, also known as a psychrometer, is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is. Aside from greenhouses and industrial spaces, hygrometers are also used in some incubators, saunas, humidors and museums.
[22] Just born baby has the respiratory rate as -
A.
32 times/minute
B.
26 times/minute
C.
18 times/minute
D.
15 times/minute
Ans:
32 times/minute
Explanation :
New born babies and children normally breathe faster than older children and adults. Their respiratory rate is about 30-60 breaths per minute. The respiratory rate for the different age-categories of children is:-6-12 months: 24-30; 1-5 years: 20-30; 6-12 years: 12-20.
[23] Uric acid is the chief nitrogenous wastes in -
A.
Frogs
B.
Birds
C.
Fishes
D.
Mankind
Ans:
Birds
Explanation :
Land snails, insects, birds, and some reptiles excrete uric acid as the major nitrogenous waste. The white, crystalline substance seen in a typical bird or lizard "poop" is actually urine: a little pool of uric acid crystals in a very small amount of water.
[24] Who proposed Binomial Nomenclature?
A.
Linnaeus
B.
John Ray
C.
Huxley
D.
Aristotle
Ans:
Linnaeus
Explanation :
Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms. The formal introduction of this system of naming species is credited to Swedish natural scientist Carl Linnaeus, effectively beginning with his work ‘Species Plantarum’ in 1753.
[25] Who proposed Five Kingdom Classification?
A.
R.H. Whittaker
B.
John Ray
C.
Carolus Linnaeus
D.
H.F. Copeland
Ans:
R.H. Whittaker
Explanation :
R.H Whittaker proposed the five kingdom classification in 1969. Those five kingdoms are: Monera, Protista, Mycota (Fungi), Metaphyta (Plantae) and Metazoa (Animalia). It is the most accepted system of modern classification as the different groups of animals are placed phylogenetically.
Explanation :
Fluoride in toothpastes prevent tooth decay from progressing and can even reverse, or stop, early tooth decay. It works by promoting a chemical reaction in tooth enamel that draws in replacement minerals including calcium. Fluoride incorporates itself into enamel weakened by acid attack, making the tooth more resistant to future acid attacks.
[12] 'Red Data Book' provides an account of -
A.
Endangered plants only
B.
Fossil plants
C.
Endangered plants and animals
D.
Extinct animals only
Ans:
Endangered plants and animals
Explanation :
The Red Data Book is the state document established for documenting rare and endangered species of animals, plants and fungi as well as some local sub-species that exist within the territory of the state or country. This book provides central information for studies and monitoring programmes on rare and endangered species and their habits.
[13] First human heart transplant was performed in -
A.
1972
B.
1955
C.
1967
D.
1959
Ans:
1967
Explanation :
Christiaan Neethling Barnard was a South African cardiac surgeon who performed the world’s first successful human-to-human heart transplant. He performed the world’s first human heart transplant operation on 3 December 1967, in an operation assisted by his brother, Marius Barnard; the operation lasted nine hours and used a team of thirty people. The patient, Louis Washkansky, was a 54-year-old grocer, suffering from diabetes and incurable heart disease.
[14] Photoperiodism affects -
A.
All of these
B.
Flowering
C.
Vegetative growth
D.
Fruiting
Ans:
All of these
Explanation :
Photoperiodism is the developmental responses of plants to the relative lengths of light and dark periods. It affects the vegetative growth as well as the time of flowering and fruiting in plants. For example, some annual plants may be made to complete their life cycle twice in a year, while others can be made to take on characteristics of everlasting flowering species and continue to produce flowers and fruits on an indefinite period, while in yet other species the plant may continue vegetative development indefinitely without flowering.
[15] The least penetrating power ray is -
A.
X-Ray
B.
a-Ray
C.
B-Ray
D.
y-Ray
Ans:
a-Ray
Explanation :
Since alpha particles are high in ionizing power, it is difficult for them to penetrate matter thoroughly. This is because alpha particles are likely to ionize the first thing they come into contact with; thus, they hold a small range of penetrating power. Beta rays have intermediate; while, Gamma Rays and X Rays have maximum penetrating power.
[16] Which one of the following types of malaria is pernicious malaria?
A.
Vivax
B.
Ralapse
C.
Tertian
D.
Malignant
Ans:
Malignant
Explanation :
Pernicious malaria is always caused by Plasmodium falciparum and characterized by severe malarial paroxysms that recur about every 48 hours and often by acute cerebral, renal, or gastrointestinal manifestations. It is also called malignant tertian malaria.
[17] Lungs of a plant are -
A.
Leaves
B.
Stems
C.
Flowers
D.
Roots
Ans:
Leaves
Explanation :
Leaves are the lungs of plants. Much like the lungs of animals, leaves are the place of a plant's respiration. It is from leaves that oxygen is emitted during the light hours of the day and carbonic acid gas at night.
[18] Enzymes are -
A.
Proteins
B.
Minerals
C.
Oils
D.
Fatty acids
Ans:
Proteins
Explanation :
Enzymes are biological molecules (proteins) that act as catalysts and help complex reactions occur everywhere in life. They are in general globular proteins. They speed up reactions by providing an alternative reaction pathway of lower activation energy.
[19] The largest cells in mammalian blood are -
A.
Erythrocytes
B.
Monocytes
C.
Basophils
D.
Lymphocytes
Ans:
Monocytes
Explanation :
Various components of blood are: Plasma, Erythrocytes (Red Blood Cells), Leueocytes (White Blood Cells) and Thrombocyles/Platelets. Monocytes, also known as macrophages, are the largest blood cells in most mammals, measuring 10-15 m in diameter. They are leucocytes. Their nuclei are kidney-shaped and cytoplasm is abundant.
[20] Which acid is present in lemon?
A.
marlic acid
B.
citric acid
C.
lactic acid
D.
tartaric acid
Ans:
citric acid
Explanation :
Citric acid is a weak organic acid with the formula C6H8O7. The juice of the lemon is about 5% to 6% citric acid, which gives a sour taste.
[21] Which instrument is used for measuring humidity of atmosphere?
A.
Barometer
B.
Anemometer
C.
Thermometer
D.
Hygrometer
Ans:
Hygrometer
Explanation :
A hygrometer, also known as a psychrometer, is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is. Aside from greenhouses and industrial spaces, hygrometers are also used in some incubators, saunas, humidors and museums.
[22] Just born baby has the respiratory rate as -
A.
32 times/minute
B.
26 times/minute
C.
18 times/minute
D.
15 times/minute
Ans:
32 times/minute
Explanation :
New born babies and children normally breathe faster than older children and adults. Their respiratory rate is about 30-60 breaths per minute. The respiratory rate for the different age-categories of children is:-6-12 months: 24-30; 1-5 years: 20-30; 6-12 years: 12-20.
[23] Uric acid is the chief nitrogenous wastes in -
A.
Frogs
B.
Birds
C.
Fishes
D.
Mankind
Ans:
Birds
Explanation :
Land snails, insects, birds, and some reptiles excrete uric acid as the major nitrogenous waste. The white, crystalline substance seen in a typical bird or lizard "poop" is actually urine: a little pool of uric acid crystals in a very small amount of water.
[24] Who proposed Binomial Nomenclature?
A.
Linnaeus
B.
John Ray
C.
Huxley
D.
Aristotle
Ans:
Linnaeus
Explanation :
Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms. The formal introduction of this system of naming species is credited to Swedish natural scientist Carl Linnaeus, effectively beginning with his work ‘Species Plantarum’ in 1753.
[25] Who proposed Five Kingdom Classification?
A.
R.H. Whittaker
B.
John Ray
C.
Carolus Linnaeus
D.
H.F. Copeland
Ans:
R.H. Whittaker
Explanation :
R.H Whittaker proposed the five kingdom classification in 1969. Those five kingdoms are: Monera, Protista, Mycota (Fungi), Metaphyta (Plantae) and Metazoa (Animalia). It is the most accepted system of modern classification as the different groups of animals are placed phylogenetically.
Explanation :
Christiaan Neethling Barnard was a South African cardiac surgeon who performed the world’s first successful human-to-human heart transplant. He performed the world’s first human heart transplant operation on 3 December 1967, in an operation assisted by his brother, Marius Barnard; the operation lasted nine hours and used a team of thirty people. The patient, Louis Washkansky, was a 54-year-old grocer, suffering from diabetes and incurable heart disease.
[14] Photoperiodism affects -
A.
All of these
B.
Flowering
C.
Vegetative growth
D.
Fruiting
Ans:
All of these
Explanation :
Photoperiodism is the developmental responses of plants to the relative lengths of light and dark periods. It affects the vegetative growth as well as the time of flowering and fruiting in plants. For example, some annual plants may be made to complete their life cycle twice in a year, while others can be made to take on characteristics of everlasting flowering species and continue to produce flowers and fruits on an indefinite period, while in yet other species the plant may continue vegetative development indefinitely without flowering.
[15] The least penetrating power ray is -
A.
X-Ray
B.
a-Ray
C.
B-Ray
D.
y-Ray
Ans:
a-Ray
Explanation :
Since alpha particles are high in ionizing power, it is difficult for them to penetrate matter thoroughly. This is because alpha particles are likely to ionize the first thing they come into contact with; thus, they hold a small range of penetrating power. Beta rays have intermediate; while, Gamma Rays and X Rays have maximum penetrating power.
[16] Which one of the following types of malaria is pernicious malaria?
A.
Vivax
B.
Ralapse
C.
Tertian
D.
Malignant
Ans:
Malignant
Explanation :
Pernicious malaria is always caused by Plasmodium falciparum and characterized by severe malarial paroxysms that recur about every 48 hours and often by acute cerebral, renal, or gastrointestinal manifestations. It is also called malignant tertian malaria.
[17] Lungs of a plant are -
A.
Leaves
B.
Stems
C.
Flowers
D.
Roots
Ans:
Leaves
Explanation :
Leaves are the lungs of plants. Much like the lungs of animals, leaves are the place of a plant's respiration. It is from leaves that oxygen is emitted during the light hours of the day and carbonic acid gas at night.
[18] Enzymes are -
A.
Proteins
B.
Minerals
C.
Oils
D.
Fatty acids
Ans:
Proteins
Explanation :
Enzymes are biological molecules (proteins) that act as catalysts and help complex reactions occur everywhere in life. They are in general globular proteins. They speed up reactions by providing an alternative reaction pathway of lower activation energy.
[19] The largest cells in mammalian blood are -
A.
Erythrocytes
B.
Monocytes
C.
Basophils
D.
Lymphocytes
Ans:
Monocytes
Explanation :
Various components of blood are: Plasma, Erythrocytes (Red Blood Cells), Leueocytes (White Blood Cells) and Thrombocyles/Platelets. Monocytes, also known as macrophages, are the largest blood cells in most mammals, measuring 10-15 m in diameter. They are leucocytes. Their nuclei are kidney-shaped and cytoplasm is abundant.
[20] Which acid is present in lemon?
A.
marlic acid
B.
citric acid
C.
lactic acid
D.
tartaric acid
Ans:
citric acid
Explanation :
Citric acid is a weak organic acid with the formula C6H8O7. The juice of the lemon is about 5% to 6% citric acid, which gives a sour taste.
[21] Which instrument is used for measuring humidity of atmosphere?
A.
Barometer
B.
Anemometer
C.
Thermometer
D.
Hygrometer
Ans:
Hygrometer
Explanation :
A hygrometer, also known as a psychrometer, is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is. Aside from greenhouses and industrial spaces, hygrometers are also used in some incubators, saunas, humidors and museums.
[22] Just born baby has the respiratory rate as -
A.
32 times/minute
B.
26 times/minute
C.
18 times/minute
D.
15 times/minute
Ans:
32 times/minute
Explanation :
New born babies and children normally breathe faster than older children and adults. Their respiratory rate is about 30-60 breaths per minute. The respiratory rate for the different age-categories of children is:-6-12 months: 24-30; 1-5 years: 20-30; 6-12 years: 12-20.
[23] Uric acid is the chief nitrogenous wastes in -
A.
Frogs
B.
Birds
C.
Fishes
D.
Mankind
Ans:
Birds
Explanation :
Land snails, insects, birds, and some reptiles excrete uric acid as the major nitrogenous waste. The white, crystalline substance seen in a typical bird or lizard "poop" is actually urine: a little pool of uric acid crystals in a very small amount of water.
[24] Who proposed Binomial Nomenclature?
A.
Linnaeus
B.
John Ray
C.
Huxley
D.
Aristotle
Ans:
Linnaeus
Explanation :
Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms. The formal introduction of this system of naming species is credited to Swedish natural scientist Carl Linnaeus, effectively beginning with his work ‘Species Plantarum’ in 1753.
[25] Who proposed Five Kingdom Classification?
A.
R.H. Whittaker
B.
John Ray
C.
Carolus Linnaeus
D.
H.F. Copeland
Ans:
R.H. Whittaker
Explanation :
R.H Whittaker proposed the five kingdom classification in 1969. Those five kingdoms are: Monera, Protista, Mycota (Fungi), Metaphyta (Plantae) and Metazoa (Animalia). It is the most accepted system of modern classification as the different groups of animals are placed phylogenetically.
Explanation :
Since alpha particles are high in ionizing power, it is difficult for them to penetrate matter thoroughly. This is because alpha particles are likely to ionize the first thing they come into contact with; thus, they hold a small range of penetrating power. Beta rays have intermediate; while, Gamma Rays and X Rays have maximum penetrating power.
[16] Which one of the following types of malaria is pernicious malaria?
A.
Vivax
B.
Ralapse
C.
Tertian
D.
Malignant
Ans:
Malignant
Explanation :
Pernicious malaria is always caused by Plasmodium falciparum and characterized by severe malarial paroxysms that recur about every 48 hours and often by acute cerebral, renal, or gastrointestinal manifestations. It is also called malignant tertian malaria.
[17] Lungs of a plant are -
A.
Leaves
B.
Stems
C.
Flowers
D.
Roots
Ans:
Leaves
Explanation :
Leaves are the lungs of plants. Much like the lungs of animals, leaves are the place of a plant's respiration. It is from leaves that oxygen is emitted during the light hours of the day and carbonic acid gas at night.
[18] Enzymes are -
A.
Proteins
B.
Minerals
C.
Oils
D.
Fatty acids
Ans:
Proteins
Explanation :
Enzymes are biological molecules (proteins) that act as catalysts and help complex reactions occur everywhere in life. They are in general globular proteins. They speed up reactions by providing an alternative reaction pathway of lower activation energy.
[19] The largest cells in mammalian blood are -
A.
Erythrocytes
B.
Monocytes
C.
Basophils
D.
Lymphocytes
Ans:
Monocytes
Explanation :
Various components of blood are: Plasma, Erythrocytes (Red Blood Cells), Leueocytes (White Blood Cells) and Thrombocyles/Platelets. Monocytes, also known as macrophages, are the largest blood cells in most mammals, measuring 10-15 m in diameter. They are leucocytes. Their nuclei are kidney-shaped and cytoplasm is abundant.
[20] Which acid is present in lemon?
A.
marlic acid
B.
citric acid
C.
lactic acid
D.
tartaric acid
Ans:
citric acid
Explanation :
Citric acid is a weak organic acid with the formula C6H8O7. The juice of the lemon is about 5% to 6% citric acid, which gives a sour taste.
[21] Which instrument is used for measuring humidity of atmosphere?
A.
Barometer
B.
Anemometer
C.
Thermometer
D.
Hygrometer
Ans:
Hygrometer
Explanation :
A hygrometer, also known as a psychrometer, is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is. Aside from greenhouses and industrial spaces, hygrometers are also used in some incubators, saunas, humidors and museums.
[22] Just born baby has the respiratory rate as -
A.
32 times/minute
B.
26 times/minute
C.
18 times/minute
D.
15 times/minute
Ans:
32 times/minute
Explanation :
New born babies and children normally breathe faster than older children and adults. Their respiratory rate is about 30-60 breaths per minute. The respiratory rate for the different age-categories of children is:-6-12 months: 24-30; 1-5 years: 20-30; 6-12 years: 12-20.
[23] Uric acid is the chief nitrogenous wastes in -
A.
Frogs
B.
Birds
C.
Fishes
D.
Mankind
Ans:
Birds
Explanation :
Land snails, insects, birds, and some reptiles excrete uric acid as the major nitrogenous waste. The white, crystalline substance seen in a typical bird or lizard "poop" is actually urine: a little pool of uric acid crystals in a very small amount of water.
[24] Who proposed Binomial Nomenclature?
A.
Linnaeus
B.
John Ray
C.
Huxley
D.
Aristotle
Ans:
Linnaeus
Explanation :
Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms. The formal introduction of this system of naming species is credited to Swedish natural scientist Carl Linnaeus, effectively beginning with his work ‘Species Plantarum’ in 1753.
[25] Who proposed Five Kingdom Classification?
A.
R.H. Whittaker
B.
John Ray
C.
Carolus Linnaeus
D.
H.F. Copeland
Ans:
R.H. Whittaker
Explanation :
R.H Whittaker proposed the five kingdom classification in 1969. Those five kingdoms are: Monera, Protista, Mycota (Fungi), Metaphyta (Plantae) and Metazoa (Animalia). It is the most accepted system of modern classification as the different groups of animals are placed phylogenetically.
Explanation :
Leaves are the lungs of plants. Much like the lungs of animals, leaves are the place of a plant's respiration. It is from leaves that oxygen is emitted during the light hours of the day and carbonic acid gas at night.
[18] Enzymes are -
A.
Proteins
B.
Minerals
C.
Oils
D.
Fatty acids
Ans:
Proteins
Explanation :
Enzymes are biological molecules (proteins) that act as catalysts and help complex reactions occur everywhere in life. They are in general globular proteins. They speed up reactions by providing an alternative reaction pathway of lower activation energy.
[19] The largest cells in mammalian blood are -
A.
Erythrocytes
B.
Monocytes
C.
Basophils
D.
Lymphocytes
Ans:
Monocytes
Explanation :
Various components of blood are: Plasma, Erythrocytes (Red Blood Cells), Leueocytes (White Blood Cells) and Thrombocyles/Platelets. Monocytes, also known as macrophages, are the largest blood cells in most mammals, measuring 10-15 m in diameter. They are leucocytes. Their nuclei are kidney-shaped and cytoplasm is abundant.
[20] Which acid is present in lemon?
A.
marlic acid
B.
citric acid
C.
lactic acid
D.
tartaric acid
Ans:
citric acid
Explanation :
Citric acid is a weak organic acid with the formula C6H8O7. The juice of the lemon is about 5% to 6% citric acid, which gives a sour taste.
[21] Which instrument is used for measuring humidity of atmosphere?
A.
Barometer
B.
Anemometer
C.
Thermometer
D.
Hygrometer
Ans:
Hygrometer
Explanation :
A hygrometer, also known as a psychrometer, is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is. Aside from greenhouses and industrial spaces, hygrometers are also used in some incubators, saunas, humidors and museums.
[22] Just born baby has the respiratory rate as -
A.
32 times/minute
B.
26 times/minute
C.
18 times/minute
D.
15 times/minute
Ans:
32 times/minute
Explanation :
New born babies and children normally breathe faster than older children and adults. Their respiratory rate is about 30-60 breaths per minute. The respiratory rate for the different age-categories of children is:-6-12 months: 24-30; 1-5 years: 20-30; 6-12 years: 12-20.
[23] Uric acid is the chief nitrogenous wastes in -
A.
Frogs
B.
Birds
C.
Fishes
D.
Mankind
Ans:
Birds
Explanation :
Land snails, insects, birds, and some reptiles excrete uric acid as the major nitrogenous waste. The white, crystalline substance seen in a typical bird or lizard "poop" is actually urine: a little pool of uric acid crystals in a very small amount of water.
[24] Who proposed Binomial Nomenclature?
A.
Linnaeus
B.
John Ray
C.
Huxley
D.
Aristotle
Ans:
Linnaeus
Explanation :
Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms. The formal introduction of this system of naming species is credited to Swedish natural scientist Carl Linnaeus, effectively beginning with his work ‘Species Plantarum’ in 1753.
[25] Who proposed Five Kingdom Classification?
A.
R.H. Whittaker
B.
John Ray
C.
Carolus Linnaeus
D.
H.F. Copeland
Ans:
R.H. Whittaker
Explanation :
R.H Whittaker proposed the five kingdom classification in 1969. Those five kingdoms are: Monera, Protista, Mycota (Fungi), Metaphyta (Plantae) and Metazoa (Animalia). It is the most accepted system of modern classification as the different groups of animals are placed phylogenetically.
Explanation :
Various components of blood are: Plasma, Erythrocytes (Red Blood Cells), Leueocytes (White Blood Cells) and Thrombocyles/Platelets. Monocytes, also known as macrophages, are the largest blood cells in most mammals, measuring 10-15 m in diameter. They are leucocytes. Their nuclei are kidney-shaped and cytoplasm is abundant.
[20] Which acid is present in lemon?
A.
marlic acid
B.
citric acid
C.
lactic acid
D.
tartaric acid
Ans:
citric acid
Explanation :
Citric acid is a weak organic acid with the formula C6H8O7. The juice of the lemon is about 5% to 6% citric acid, which gives a sour taste.
[21] Which instrument is used for measuring humidity of atmosphere?
A.
Barometer
B.
Anemometer
C.
Thermometer
D.
Hygrometer
Ans:
Hygrometer
Explanation :
A hygrometer, also known as a psychrometer, is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is. Aside from greenhouses and industrial spaces, hygrometers are also used in some incubators, saunas, humidors and museums.
[22] Just born baby has the respiratory rate as -
A.
32 times/minute
B.
26 times/minute
C.
18 times/minute
D.
15 times/minute
Ans:
32 times/minute
Explanation :
New born babies and children normally breathe faster than older children and adults. Their respiratory rate is about 30-60 breaths per minute. The respiratory rate for the different age-categories of children is:-6-12 months: 24-30; 1-5 years: 20-30; 6-12 years: 12-20.
[23] Uric acid is the chief nitrogenous wastes in -
A.
Frogs
B.
Birds
C.
Fishes
D.
Mankind
Ans:
Birds
Explanation :
Land snails, insects, birds, and some reptiles excrete uric acid as the major nitrogenous waste. The white, crystalline substance seen in a typical bird or lizard "poop" is actually urine: a little pool of uric acid crystals in a very small amount of water.
[24] Who proposed Binomial Nomenclature?
A.
Linnaeus
B.
John Ray
C.
Huxley
D.
Aristotle
Ans:
Linnaeus
Explanation :
Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms. The formal introduction of this system of naming species is credited to Swedish natural scientist Carl Linnaeus, effectively beginning with his work ‘Species Plantarum’ in 1753.
[25] Who proposed Five Kingdom Classification?
A.
R.H. Whittaker
B.
John Ray
C.
Carolus Linnaeus
D.
H.F. Copeland
Ans:
R.H. Whittaker
Explanation :
R.H Whittaker proposed the five kingdom classification in 1969. Those five kingdoms are: Monera, Protista, Mycota (Fungi), Metaphyta (Plantae) and Metazoa (Animalia). It is the most accepted system of modern classification as the different groups of animals are placed phylogenetically.
Explanation :
A hygrometer, also known as a psychrometer, is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is. Aside from greenhouses and industrial spaces, hygrometers are also used in some incubators, saunas, humidors and museums.
[22] Just born baby has the respiratory rate as -
A.
32 times/minute
B.
26 times/minute
C.
18 times/minute
D.
15 times/minute
Ans:
32 times/minute
Explanation :
New born babies and children normally breathe faster than older children and adults. Their respiratory rate is about 30-60 breaths per minute. The respiratory rate for the different age-categories of children is:-6-12 months: 24-30; 1-5 years: 20-30; 6-12 years: 12-20.
[23] Uric acid is the chief nitrogenous wastes in -
A.
Frogs
B.
Birds
C.
Fishes
D.
Mankind
Ans:
Birds
Explanation :
Land snails, insects, birds, and some reptiles excrete uric acid as the major nitrogenous waste. The white, crystalline substance seen in a typical bird or lizard "poop" is actually urine: a little pool of uric acid crystals in a very small amount of water.
[24] Who proposed Binomial Nomenclature?
A.
Linnaeus
B.
John Ray
C.
Huxley
D.
Aristotle
Ans:
Linnaeus
Explanation :
Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms. The formal introduction of this system of naming species is credited to Swedish natural scientist Carl Linnaeus, effectively beginning with his work ‘Species Plantarum’ in 1753.
[25] Who proposed Five Kingdom Classification?
A.
R.H. Whittaker
B.
John Ray
C.
Carolus Linnaeus
D.
H.F. Copeland
Ans:
R.H. Whittaker
Explanation :
R.H Whittaker proposed the five kingdom classification in 1969. Those five kingdoms are: Monera, Protista, Mycota (Fungi), Metaphyta (Plantae) and Metazoa (Animalia). It is the most accepted system of modern classification as the different groups of animals are placed phylogenetically.
Explanation :
Land snails, insects, birds, and some reptiles excrete uric acid as the major nitrogenous waste. The white, crystalline substance seen in a typical bird or lizard "poop" is actually urine: a little pool of uric acid crystals in a very small amount of water.
[24] Who proposed Binomial Nomenclature?
A.
Linnaeus
B.
John Ray
C.
Huxley
D.
Aristotle
Ans:
Linnaeus
Explanation :
Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms. The formal introduction of this system of naming species is credited to Swedish natural scientist Carl Linnaeus, effectively beginning with his work ‘Species Plantarum’ in 1753.
[25] Who proposed Five Kingdom Classification?
A.
R.H. Whittaker
B.
John Ray
C.
Carolus Linnaeus
D.
H.F. Copeland
Ans:
R.H. Whittaker
Explanation :
R.H Whittaker proposed the five kingdom classification in 1969. Those five kingdoms are: Monera, Protista, Mycota (Fungi), Metaphyta (Plantae) and Metazoa (Animalia). It is the most accepted system of modern classification as the different groups of animals are placed phylogenetically.
Explanation :
R.H Whittaker proposed the five kingdom classification in 1969. Those five kingdoms are: Monera, Protista, Mycota (Fungi), Metaphyta (Plantae) and Metazoa (Animalia). It is the most accepted system of modern classification as the different groups of animals are placed phylogenetically.