[1] Which acid is present in lemon -
A.
malic acid
B.
citric acid
C.
lactic acid
D.
tartaric acid
Ans:
citric acid
Explanation :
The main organic acids contained in the flesh of lemons are citric acid and malic acid. The sourness of citrus fruit is the taste of citric acid.
[2] One of the best solutions to get rid of non-biodeadable waste is -
A.
Burning
B.
Dumping
C.
Burying
D.
Recycling
Ans:
Recycling
Explanation :
The best way to manage non-biodegradeble wastes such as plastics, metals and electronics is Reduce, Reuse and Recycle. The waste product can be recycled to make it usable again without posing serious challenges to the environment. Recycling is by far the most environmentally friendly option that one can choose.
[3] Male mosquitoes take their food from -
A.
human blood
B.
standing water
C.
sap of plants
D.
dung and debris
Ans:
sap of plants
Explanation :
Both male and female mosquitoes eat the same things—nectar, plant sap, or honeydew (a sticky substance excreted by aphids)—for energy. But only female mosquitoes imbibe a blood meal. The females need the protein in blood platelets to develop eggs. Male mosquitoes don’t have specific mouthparts to pierce skin and access blood vessels.
[4] Smooth muscles are likely to be found in -
A.
muscles of legs
B.
muscles of arms
C.
stomach
D.
heart
Ans:
stomach
Explanation :
The term smooth muscle refers to a muscle of the human body that is part of a involuntary muscle group. The walls of hollow organs are the primary place that smooth muscles can be found. Some of those locations include: Walls of blood vessels, walls of stomach, intestines, large (aorta) and small arteries, arterioles and veins, urinary bladder, uterus, male and female reproductive tracts, respiratory tract etc.
[5] The substrate of photorespiration is -
A.
Fructose
B.
Pyruvic acid
C.
Glycolate
D.
Glucose
Ans:
Glycolate
Explanation :
Photorespiration leads to loss of fixed carbon dioxide in C3 plants by the enzyme RuBisCo. During photorespiration, this enzymes reacts with oxygen instead of carbon dioxide to ribulose 1,5 bisphosphate to produce phosphoglycolate as the first product. The phosphoglycolate is dephosphorylated to generate glycolate, which is the actual substrate of photorespiration.
[6] Which one of the following types of medicines is used for treating indigestion?
A.
Antibiotic
B.
Analgesic
C.
Antacid
D.
Antiseptic
Ans:
Antacid
Explanation :
Our digestive system needs a pH of around 1.2 to digest food properly. When the acidity gets too high, antacid tablets that contain alkaline chemicals like magnesium hydroxide are used to reduce acidity.
[7] Which of the following is known as animal starch?
A.
glycogen
B.
cellulose
C.
glucose
D.
chitin
Ans:
glycogen
Explanation :
Glycogen, the principal storage form of glucose in animal cells, sometimes called "animal starch" for its resemblance with starch found in plants. It t is stored in liver and muscle cells and can be converted to glucose if needed. In the liver this conversion is regulated by the hormone glucagon.
[8] Maximum oxygen is available from -
A.
Deserts
B.
Green forests
C.
Grass lands
D.
Phytoplanktons
Ans:
Phytoplanktons
Explanation :
Most of Earth's oxygen comes from tiny ocean plants - called phytoplankton - that live near the water's surface and drift with the currents. Like all plants, they photosynthesize - that is, they use sun-light and carbon dioxide to make food. Scientists believe that phytoplankton contribute between 50 to 85 percent of the oxygen in Earth's atmosphere (National Geographic)
[9] Which one of the following is a vestigial organ?
A.
Eye-brow
B.
Collar-bone
C.
Wisdom-teeth
D.
Nails
Ans:
Wisdom-teeth
Explanation :
Wisdom teeth are vestigial third molars that human ancestors used to help in grinding down plant tissue. The common postulation is that the skulls of human ancestors had larger jaws with more teeth, which were possibly used to help chew down foliage to compensate for a lack of ability to efficiently digest the cellulose that makes up a plant cell wall. As human diets changed, smaller jaws were naturally selected, yet the third molars, or “wisdom teeth,” still commonly develop in human mouths.
[10] Water flows off the wings of birds and insects due to the presence of -
A.
Waxes
B.
Sugars
C.
Proteins
D.
Minerals
Ans:
Waxes
Explanation :
Insects and birds have the simplest surface waxes that serve to water proof feathers. These consist of long chain hydrocarbons. The interlocking feather barbs and a special waxy coating create a shield that water runs off of. Besides, while a few components present in surface lipids can prevent growth of pathogens, the total surface was layer certainly functions to prevent microbial entry into the organism.
[11] Insectivorous plants grow in soil which is deficient in -
A.
Nitrogen
B.
Sodium
C.
Calcium
D.
Magnesium
Ans:
Nitrogen
Explanation :
Carnivorous or insectivorous plants grow in places where the soil is thin or poor in nutrients, especially nitrogen, such as acidic bogs and rock outcroppings. In this habitat, plants that have alternative strategies for obtaining essential minerals are at a competitive advantage. The capture of insects provides such plants with a supplemental source of essential nutrients.
[12] Hind limbs thumping on ground by a rabbit is a behaviour related to -
A.
Courtship
B.
Preparation for a duet
C.
Warning signal to members
D.
Surrender of a stronger opponent
Ans:
Warning signal to members
Explanation :
A thump of either a single hind leg or both together shows the rabbit's fear or displeasure over something. In any case, it shows the identification of some danger in the vicinity by the rabbit. The rabbit feels threatened by a danger, and warns the rest of his warren.
[13] When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of -
A.
Vesicles
B.
Cleft
C.
Mitochondria
D.
All of the above
Ans:
Vesicles
Explanation :
The electrical impulses stimulate the release of vesicles. These store various neurotransmitters that are released at the synapse. Vesicles are essential for propagating nerve impulses between neurons and are constantly recreated by the cell.
[14] Which is the second largest gland of Human body?
A.
Liver
B.
Large Intestine
C.
Thorax
D.
Pancreas
Ans:
Pancreas
Explanation :
Liver is the largest gland in human body. It is also the largest (internal) organ in our body and can weigh up to 1.5-1.6 kg for a human adult. The Pancreas is the second largest gland in the body and is both an endocrine and exocrine gland.
[15] From which part of Opium plant we get morphine?
A.
Leaves
B.
Stem
C.
Bark
D.
Fruit coat
Ans:
Fruit coat
Explanation :
Morphine is the predominant alkaloid found in the varieties of opium poppy plant. It is obtained in form of liquid from the fruit capsule of the poppy. The latex which oozes from the incisions is collected, and dried to produce "raw opium" (about 8-14% morphine by thy weight).
[16] Which of the following is the primary sex organ in man?
A.
Prostrate
B.
Testis
C.
Vas defences
D.
Seminal vesicles
Ans:
Testis
Explanation :
In the case of male reproductive system the primary sex organs are a pair of testes lying outside the abdominal cavity, enclosed in a sac called the scrotum.
[17] Contraceptive pills in the market contain -
A.
steroid-hormones
B.
inorganic compounds
C.
herbicides
D.
antibiotics
Ans:
steroid-hormones
Explanation :
Contraceptive, pill: Commonly called "the pill," combined oral contraceptives are the most commonly used form of reversible birth control in the United States.
[18] The newly hatched tadpole breaths through its -
A.
Lung
B.
External gills
C.
Internal gills
D.
All of the above
Ans:
External gills
Explanation :
A tadpole resembles a fish and breathes through external gills. Adult frogs breathe through their lungs and exchange gases through their skin and the lining of their mouths.
[19] Virus in Latin means -
A.
Sweet
B.
Small
C.
Fluid
D.
Poison
Ans:
Poison
Explanation :
The word Virus has been derived from the Latin `virus' referring to poison and other noxious substances. A virus is a small infectious agent that replicates only inside the living cells of other organisms.
[20] Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
A.
Eco-niche
B.
Ecosystem
C.
Ecotone
D.
Habitat
Ans:
Ecosystem
Explanation :
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. The nature of the organisms—the species, functional groups and tropic levels to which they belong dictates the sorts of actions these individuals are capable of carrying out, and the relative efficiency with which they do so.
[21] Which disease is caused by Nickel?
A.
Itai Itai
B.
Dermatitis
C.
Learning disability
D.
Asthma
Ans:
Dermatitis
Explanation :
Nickel allergy is one of the most common causes of contact allergic dermatitis. In affected individuals, dermatitis (also called eczema) develops in places where nickel containing metal is touching the skin.
[22] Name the acid present in lemon.
A.
Phosphoric acid
B.
Carbonic acid
C.
Citric acid
D.
Malic acid
Ans:
Citric acid
Explanation :
Lemons have significant concentrations of citric acid (about 47 g/l in juice). Citric acid occurs naturally in citrus fruits.
[23] Name the tiny pores present on the surface of leaves in plants.
A.
Pits
B.
Stomata
C.
Trichomes
D.
Hydathodes
Ans:
Stomata
Explanation :
Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.
[24] Rinderpest disease of Cattle is caused by -
A.
Insects
B.
Bacteria
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.
[25] Haemoglobin in the blood is a complex protein rich in -
A.
Iron
B.
Silver
C.
Copper
D.
Gold
Ans:
Iron
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Iron is an essential part of hemoglobin. When iron stores are low, both hemoglobin and red blood cell production slows, causing anemia.
Explanation :
The main organic acids contained in the flesh of lemons are citric acid and malic acid. The sourness of citrus fruit is the taste of citric acid.
[2] One of the best solutions to get rid of non-biodeadable waste is -
A.
Burning
B.
Dumping
C.
Burying
D.
Recycling
Ans:
Recycling
Explanation :
The best way to manage non-biodegradeble wastes such as plastics, metals and electronics is Reduce, Reuse and Recycle. The waste product can be recycled to make it usable again without posing serious challenges to the environment. Recycling is by far the most environmentally friendly option that one can choose.
[3] Male mosquitoes take their food from -
A.
human blood
B.
standing water
C.
sap of plants
D.
dung and debris
Ans:
sap of plants
Explanation :
Both male and female mosquitoes eat the same things—nectar, plant sap, or honeydew (a sticky substance excreted by aphids)—for energy. But only female mosquitoes imbibe a blood meal. The females need the protein in blood platelets to develop eggs. Male mosquitoes don’t have specific mouthparts to pierce skin and access blood vessels.
[4] Smooth muscles are likely to be found in -
A.
muscles of legs
B.
muscles of arms
C.
stomach
D.
heart
Ans:
stomach
Explanation :
The term smooth muscle refers to a muscle of the human body that is part of a involuntary muscle group. The walls of hollow organs are the primary place that smooth muscles can be found. Some of those locations include: Walls of blood vessels, walls of stomach, intestines, large (aorta) and small arteries, arterioles and veins, urinary bladder, uterus, male and female reproductive tracts, respiratory tract etc.
[5] The substrate of photorespiration is -
A.
Fructose
B.
Pyruvic acid
C.
Glycolate
D.
Glucose
Ans:
Glycolate
Explanation :
Photorespiration leads to loss of fixed carbon dioxide in C3 plants by the enzyme RuBisCo. During photorespiration, this enzymes reacts with oxygen instead of carbon dioxide to ribulose 1,5 bisphosphate to produce phosphoglycolate as the first product. The phosphoglycolate is dephosphorylated to generate glycolate, which is the actual substrate of photorespiration.
[6] Which one of the following types of medicines is used for treating indigestion?
A.
Antibiotic
B.
Analgesic
C.
Antacid
D.
Antiseptic
Ans:
Antacid
Explanation :
Our digestive system needs a pH of around 1.2 to digest food properly. When the acidity gets too high, antacid tablets that contain alkaline chemicals like magnesium hydroxide are used to reduce acidity.
[7] Which of the following is known as animal starch?
A.
glycogen
B.
cellulose
C.
glucose
D.
chitin
Ans:
glycogen
Explanation :
Glycogen, the principal storage form of glucose in animal cells, sometimes called "animal starch" for its resemblance with starch found in plants. It t is stored in liver and muscle cells and can be converted to glucose if needed. In the liver this conversion is regulated by the hormone glucagon.
[8] Maximum oxygen is available from -
A.
Deserts
B.
Green forests
C.
Grass lands
D.
Phytoplanktons
Ans:
Phytoplanktons
Explanation :
Most of Earth's oxygen comes from tiny ocean plants - called phytoplankton - that live near the water's surface and drift with the currents. Like all plants, they photosynthesize - that is, they use sun-light and carbon dioxide to make food. Scientists believe that phytoplankton contribute between 50 to 85 percent of the oxygen in Earth's atmosphere (National Geographic)
[9] Which one of the following is a vestigial organ?
A.
Eye-brow
B.
Collar-bone
C.
Wisdom-teeth
D.
Nails
Ans:
Wisdom-teeth
Explanation :
Wisdom teeth are vestigial third molars that human ancestors used to help in grinding down plant tissue. The common postulation is that the skulls of human ancestors had larger jaws with more teeth, which were possibly used to help chew down foliage to compensate for a lack of ability to efficiently digest the cellulose that makes up a plant cell wall. As human diets changed, smaller jaws were naturally selected, yet the third molars, or “wisdom teeth,” still commonly develop in human mouths.
[10] Water flows off the wings of birds and insects due to the presence of -
A.
Waxes
B.
Sugars
C.
Proteins
D.
Minerals
Ans:
Waxes
Explanation :
Insects and birds have the simplest surface waxes that serve to water proof feathers. These consist of long chain hydrocarbons. The interlocking feather barbs and a special waxy coating create a shield that water runs off of. Besides, while a few components present in surface lipids can prevent growth of pathogens, the total surface was layer certainly functions to prevent microbial entry into the organism.
[11] Insectivorous plants grow in soil which is deficient in -
A.
Nitrogen
B.
Sodium
C.
Calcium
D.
Magnesium
Ans:
Nitrogen
Explanation :
Carnivorous or insectivorous plants grow in places where the soil is thin or poor in nutrients, especially nitrogen, such as acidic bogs and rock outcroppings. In this habitat, plants that have alternative strategies for obtaining essential minerals are at a competitive advantage. The capture of insects provides such plants with a supplemental source of essential nutrients.
[12] Hind limbs thumping on ground by a rabbit is a behaviour related to -
A.
Courtship
B.
Preparation for a duet
C.
Warning signal to members
D.
Surrender of a stronger opponent
Ans:
Warning signal to members
Explanation :
A thump of either a single hind leg or both together shows the rabbit's fear or displeasure over something. In any case, it shows the identification of some danger in the vicinity by the rabbit. The rabbit feels threatened by a danger, and warns the rest of his warren.
[13] When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of -
A.
Vesicles
B.
Cleft
C.
Mitochondria
D.
All of the above
Ans:
Vesicles
Explanation :
The electrical impulses stimulate the release of vesicles. These store various neurotransmitters that are released at the synapse. Vesicles are essential for propagating nerve impulses between neurons and are constantly recreated by the cell.
[14] Which is the second largest gland of Human body?
A.
Liver
B.
Large Intestine
C.
Thorax
D.
Pancreas
Ans:
Pancreas
Explanation :
Liver is the largest gland in human body. It is also the largest (internal) organ in our body and can weigh up to 1.5-1.6 kg for a human adult. The Pancreas is the second largest gland in the body and is both an endocrine and exocrine gland.
[15] From which part of Opium plant we get morphine?
A.
Leaves
B.
Stem
C.
Bark
D.
Fruit coat
Ans:
Fruit coat
Explanation :
Morphine is the predominant alkaloid found in the varieties of opium poppy plant. It is obtained in form of liquid from the fruit capsule of the poppy. The latex which oozes from the incisions is collected, and dried to produce "raw opium" (about 8-14% morphine by thy weight).
[16] Which of the following is the primary sex organ in man?
A.
Prostrate
B.
Testis
C.
Vas defences
D.
Seminal vesicles
Ans:
Testis
Explanation :
In the case of male reproductive system the primary sex organs are a pair of testes lying outside the abdominal cavity, enclosed in a sac called the scrotum.
[17] Contraceptive pills in the market contain -
A.
steroid-hormones
B.
inorganic compounds
C.
herbicides
D.
antibiotics
Ans:
steroid-hormones
Explanation :
Contraceptive, pill: Commonly called "the pill," combined oral contraceptives are the most commonly used form of reversible birth control in the United States.
[18] The newly hatched tadpole breaths through its -
A.
Lung
B.
External gills
C.
Internal gills
D.
All of the above
Ans:
External gills
Explanation :
A tadpole resembles a fish and breathes through external gills. Adult frogs breathe through their lungs and exchange gases through their skin and the lining of their mouths.
[19] Virus in Latin means -
A.
Sweet
B.
Small
C.
Fluid
D.
Poison
Ans:
Poison
Explanation :
The word Virus has been derived from the Latin `virus' referring to poison and other noxious substances. A virus is a small infectious agent that replicates only inside the living cells of other organisms.
[20] Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
A.
Eco-niche
B.
Ecosystem
C.
Ecotone
D.
Habitat
Ans:
Ecosystem
Explanation :
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. The nature of the organisms—the species, functional groups and tropic levels to which they belong dictates the sorts of actions these individuals are capable of carrying out, and the relative efficiency with which they do so.
[21] Which disease is caused by Nickel?
A.
Itai Itai
B.
Dermatitis
C.
Learning disability
D.
Asthma
Ans:
Dermatitis
Explanation :
Nickel allergy is one of the most common causes of contact allergic dermatitis. In affected individuals, dermatitis (also called eczema) develops in places where nickel containing metal is touching the skin.
[22] Name the acid present in lemon.
A.
Phosphoric acid
B.
Carbonic acid
C.
Citric acid
D.
Malic acid
Ans:
Citric acid
Explanation :
Lemons have significant concentrations of citric acid (about 47 g/l in juice). Citric acid occurs naturally in citrus fruits.
[23] Name the tiny pores present on the surface of leaves in plants.
A.
Pits
B.
Stomata
C.
Trichomes
D.
Hydathodes
Ans:
Stomata
Explanation :
Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.
[24] Rinderpest disease of Cattle is caused by -
A.
Insects
B.
Bacteria
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.
[25] Haemoglobin in the blood is a complex protein rich in -
A.
Iron
B.
Silver
C.
Copper
D.
Gold
Ans:
Iron
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Iron is an essential part of hemoglobin. When iron stores are low, both hemoglobin and red blood cell production slows, causing anemia.
Explanation :
Both male and female mosquitoes eat the same things—nectar, plant sap, or honeydew (a sticky substance excreted by aphids)—for energy. But only female mosquitoes imbibe a blood meal. The females need the protein in blood platelets to develop eggs. Male mosquitoes don’t have specific mouthparts to pierce skin and access blood vessels.
[4] Smooth muscles are likely to be found in -
A.
muscles of legs
B.
muscles of arms
C.
stomach
D.
heart
Ans:
stomach
Explanation :
The term smooth muscle refers to a muscle of the human body that is part of a involuntary muscle group. The walls of hollow organs are the primary place that smooth muscles can be found. Some of those locations include: Walls of blood vessels, walls of stomach, intestines, large (aorta) and small arteries, arterioles and veins, urinary bladder, uterus, male and female reproductive tracts, respiratory tract etc.
[5] The substrate of photorespiration is -
A.
Fructose
B.
Pyruvic acid
C.
Glycolate
D.
Glucose
Ans:
Glycolate
Explanation :
Photorespiration leads to loss of fixed carbon dioxide in C3 plants by the enzyme RuBisCo. During photorespiration, this enzymes reacts with oxygen instead of carbon dioxide to ribulose 1,5 bisphosphate to produce phosphoglycolate as the first product. The phosphoglycolate is dephosphorylated to generate glycolate, which is the actual substrate of photorespiration.
[6] Which one of the following types of medicines is used for treating indigestion?
A.
Antibiotic
B.
Analgesic
C.
Antacid
D.
Antiseptic
Ans:
Antacid
Explanation :
Our digestive system needs a pH of around 1.2 to digest food properly. When the acidity gets too high, antacid tablets that contain alkaline chemicals like magnesium hydroxide are used to reduce acidity.
[7] Which of the following is known as animal starch?
A.
glycogen
B.
cellulose
C.
glucose
D.
chitin
Ans:
glycogen
Explanation :
Glycogen, the principal storage form of glucose in animal cells, sometimes called "animal starch" for its resemblance with starch found in plants. It t is stored in liver and muscle cells and can be converted to glucose if needed. In the liver this conversion is regulated by the hormone glucagon.
[8] Maximum oxygen is available from -
A.
Deserts
B.
Green forests
C.
Grass lands
D.
Phytoplanktons
Ans:
Phytoplanktons
Explanation :
Most of Earth's oxygen comes from tiny ocean plants - called phytoplankton - that live near the water's surface and drift with the currents. Like all plants, they photosynthesize - that is, they use sun-light and carbon dioxide to make food. Scientists believe that phytoplankton contribute between 50 to 85 percent of the oxygen in Earth's atmosphere (National Geographic)
[9] Which one of the following is a vestigial organ?
A.
Eye-brow
B.
Collar-bone
C.
Wisdom-teeth
D.
Nails
Ans:
Wisdom-teeth
Explanation :
Wisdom teeth are vestigial third molars that human ancestors used to help in grinding down plant tissue. The common postulation is that the skulls of human ancestors had larger jaws with more teeth, which were possibly used to help chew down foliage to compensate for a lack of ability to efficiently digest the cellulose that makes up a plant cell wall. As human diets changed, smaller jaws were naturally selected, yet the third molars, or “wisdom teeth,” still commonly develop in human mouths.
[10] Water flows off the wings of birds and insects due to the presence of -
A.
Waxes
B.
Sugars
C.
Proteins
D.
Minerals
Ans:
Waxes
Explanation :
Insects and birds have the simplest surface waxes that serve to water proof feathers. These consist of long chain hydrocarbons. The interlocking feather barbs and a special waxy coating create a shield that water runs off of. Besides, while a few components present in surface lipids can prevent growth of pathogens, the total surface was layer certainly functions to prevent microbial entry into the organism.
[11] Insectivorous plants grow in soil which is deficient in -
A.
Nitrogen
B.
Sodium
C.
Calcium
D.
Magnesium
Ans:
Nitrogen
Explanation :
Carnivorous or insectivorous plants grow in places where the soil is thin or poor in nutrients, especially nitrogen, such as acidic bogs and rock outcroppings. In this habitat, plants that have alternative strategies for obtaining essential minerals are at a competitive advantage. The capture of insects provides such plants with a supplemental source of essential nutrients.
[12] Hind limbs thumping on ground by a rabbit is a behaviour related to -
A.
Courtship
B.
Preparation for a duet
C.
Warning signal to members
D.
Surrender of a stronger opponent
Ans:
Warning signal to members
Explanation :
A thump of either a single hind leg or both together shows the rabbit's fear or displeasure over something. In any case, it shows the identification of some danger in the vicinity by the rabbit. The rabbit feels threatened by a danger, and warns the rest of his warren.
[13] When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of -
A.
Vesicles
B.
Cleft
C.
Mitochondria
D.
All of the above
Ans:
Vesicles
Explanation :
The electrical impulses stimulate the release of vesicles. These store various neurotransmitters that are released at the synapse. Vesicles are essential for propagating nerve impulses between neurons and are constantly recreated by the cell.
[14] Which is the second largest gland of Human body?
A.
Liver
B.
Large Intestine
C.
Thorax
D.
Pancreas
Ans:
Pancreas
Explanation :
Liver is the largest gland in human body. It is also the largest (internal) organ in our body and can weigh up to 1.5-1.6 kg for a human adult. The Pancreas is the second largest gland in the body and is both an endocrine and exocrine gland.
[15] From which part of Opium plant we get morphine?
A.
Leaves
B.
Stem
C.
Bark
D.
Fruit coat
Ans:
Fruit coat
Explanation :
Morphine is the predominant alkaloid found in the varieties of opium poppy plant. It is obtained in form of liquid from the fruit capsule of the poppy. The latex which oozes from the incisions is collected, and dried to produce "raw opium" (about 8-14% morphine by thy weight).
[16] Which of the following is the primary sex organ in man?
A.
Prostrate
B.
Testis
C.
Vas defences
D.
Seminal vesicles
Ans:
Testis
Explanation :
In the case of male reproductive system the primary sex organs are a pair of testes lying outside the abdominal cavity, enclosed in a sac called the scrotum.
[17] Contraceptive pills in the market contain -
A.
steroid-hormones
B.
inorganic compounds
C.
herbicides
D.
antibiotics
Ans:
steroid-hormones
Explanation :
Contraceptive, pill: Commonly called "the pill," combined oral contraceptives are the most commonly used form of reversible birth control in the United States.
[18] The newly hatched tadpole breaths through its -
A.
Lung
B.
External gills
C.
Internal gills
D.
All of the above
Ans:
External gills
Explanation :
A tadpole resembles a fish and breathes through external gills. Adult frogs breathe through their lungs and exchange gases through their skin and the lining of their mouths.
[19] Virus in Latin means -
A.
Sweet
B.
Small
C.
Fluid
D.
Poison
Ans:
Poison
Explanation :
The word Virus has been derived from the Latin `virus' referring to poison and other noxious substances. A virus is a small infectious agent that replicates only inside the living cells of other organisms.
[20] Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
A.
Eco-niche
B.
Ecosystem
C.
Ecotone
D.
Habitat
Ans:
Ecosystem
Explanation :
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. The nature of the organisms—the species, functional groups and tropic levels to which they belong dictates the sorts of actions these individuals are capable of carrying out, and the relative efficiency with which they do so.
[21] Which disease is caused by Nickel?
A.
Itai Itai
B.
Dermatitis
C.
Learning disability
D.
Asthma
Ans:
Dermatitis
Explanation :
Nickel allergy is one of the most common causes of contact allergic dermatitis. In affected individuals, dermatitis (also called eczema) develops in places where nickel containing metal is touching the skin.
[22] Name the acid present in lemon.
A.
Phosphoric acid
B.
Carbonic acid
C.
Citric acid
D.
Malic acid
Ans:
Citric acid
Explanation :
Lemons have significant concentrations of citric acid (about 47 g/l in juice). Citric acid occurs naturally in citrus fruits.
[23] Name the tiny pores present on the surface of leaves in plants.
A.
Pits
B.
Stomata
C.
Trichomes
D.
Hydathodes
Ans:
Stomata
Explanation :
Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.
[24] Rinderpest disease of Cattle is caused by -
A.
Insects
B.
Bacteria
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.
[25] Haemoglobin in the blood is a complex protein rich in -
A.
Iron
B.
Silver
C.
Copper
D.
Gold
Ans:
Iron
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Iron is an essential part of hemoglobin. When iron stores are low, both hemoglobin and red blood cell production slows, causing anemia.
Explanation :
Photorespiration leads to loss of fixed carbon dioxide in C3 plants by the enzyme RuBisCo. During photorespiration, this enzymes reacts with oxygen instead of carbon dioxide to ribulose 1,5 bisphosphate to produce phosphoglycolate as the first product. The phosphoglycolate is dephosphorylated to generate glycolate, which is the actual substrate of photorespiration.
[6] Which one of the following types of medicines is used for treating indigestion?
A.
Antibiotic
B.
Analgesic
C.
Antacid
D.
Antiseptic
Ans:
Antacid
Explanation :
Our digestive system needs a pH of around 1.2 to digest food properly. When the acidity gets too high, antacid tablets that contain alkaline chemicals like magnesium hydroxide are used to reduce acidity.
[7] Which of the following is known as animal starch?
A.
glycogen
B.
cellulose
C.
glucose
D.
chitin
Ans:
glycogen
Explanation :
Glycogen, the principal storage form of glucose in animal cells, sometimes called "animal starch" for its resemblance with starch found in plants. It t is stored in liver and muscle cells and can be converted to glucose if needed. In the liver this conversion is regulated by the hormone glucagon.
[8] Maximum oxygen is available from -
A.
Deserts
B.
Green forests
C.
Grass lands
D.
Phytoplanktons
Ans:
Phytoplanktons
Explanation :
Most of Earth's oxygen comes from tiny ocean plants - called phytoplankton - that live near the water's surface and drift with the currents. Like all plants, they photosynthesize - that is, they use sun-light and carbon dioxide to make food. Scientists believe that phytoplankton contribute between 50 to 85 percent of the oxygen in Earth's atmosphere (National Geographic)
[9] Which one of the following is a vestigial organ?
A.
Eye-brow
B.
Collar-bone
C.
Wisdom-teeth
D.
Nails
Ans:
Wisdom-teeth
Explanation :
Wisdom teeth are vestigial third molars that human ancestors used to help in grinding down plant tissue. The common postulation is that the skulls of human ancestors had larger jaws with more teeth, which were possibly used to help chew down foliage to compensate for a lack of ability to efficiently digest the cellulose that makes up a plant cell wall. As human diets changed, smaller jaws were naturally selected, yet the third molars, or “wisdom teeth,” still commonly develop in human mouths.
[10] Water flows off the wings of birds and insects due to the presence of -
A.
Waxes
B.
Sugars
C.
Proteins
D.
Minerals
Ans:
Waxes
Explanation :
Insects and birds have the simplest surface waxes that serve to water proof feathers. These consist of long chain hydrocarbons. The interlocking feather barbs and a special waxy coating create a shield that water runs off of. Besides, while a few components present in surface lipids can prevent growth of pathogens, the total surface was layer certainly functions to prevent microbial entry into the organism.
[11] Insectivorous plants grow in soil which is deficient in -
A.
Nitrogen
B.
Sodium
C.
Calcium
D.
Magnesium
Ans:
Nitrogen
Explanation :
Carnivorous or insectivorous plants grow in places where the soil is thin or poor in nutrients, especially nitrogen, such as acidic bogs and rock outcroppings. In this habitat, plants that have alternative strategies for obtaining essential minerals are at a competitive advantage. The capture of insects provides such plants with a supplemental source of essential nutrients.
[12] Hind limbs thumping on ground by a rabbit is a behaviour related to -
A.
Courtship
B.
Preparation for a duet
C.
Warning signal to members
D.
Surrender of a stronger opponent
Ans:
Warning signal to members
Explanation :
A thump of either a single hind leg or both together shows the rabbit's fear or displeasure over something. In any case, it shows the identification of some danger in the vicinity by the rabbit. The rabbit feels threatened by a danger, and warns the rest of his warren.
[13] When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of -
A.
Vesicles
B.
Cleft
C.
Mitochondria
D.
All of the above
Ans:
Vesicles
Explanation :
The electrical impulses stimulate the release of vesicles. These store various neurotransmitters that are released at the synapse. Vesicles are essential for propagating nerve impulses between neurons and are constantly recreated by the cell.
[14] Which is the second largest gland of Human body?
A.
Liver
B.
Large Intestine
C.
Thorax
D.
Pancreas
Ans:
Pancreas
Explanation :
Liver is the largest gland in human body. It is also the largest (internal) organ in our body and can weigh up to 1.5-1.6 kg for a human adult. The Pancreas is the second largest gland in the body and is both an endocrine and exocrine gland.
[15] From which part of Opium plant we get morphine?
A.
Leaves
B.
Stem
C.
Bark
D.
Fruit coat
Ans:
Fruit coat
Explanation :
Morphine is the predominant alkaloid found in the varieties of opium poppy plant. It is obtained in form of liquid from the fruit capsule of the poppy. The latex which oozes from the incisions is collected, and dried to produce "raw opium" (about 8-14% morphine by thy weight).
[16] Which of the following is the primary sex organ in man?
A.
Prostrate
B.
Testis
C.
Vas defences
D.
Seminal vesicles
Ans:
Testis
Explanation :
In the case of male reproductive system the primary sex organs are a pair of testes lying outside the abdominal cavity, enclosed in a sac called the scrotum.
[17] Contraceptive pills in the market contain -
A.
steroid-hormones
B.
inorganic compounds
C.
herbicides
D.
antibiotics
Ans:
steroid-hormones
Explanation :
Contraceptive, pill: Commonly called "the pill," combined oral contraceptives are the most commonly used form of reversible birth control in the United States.
[18] The newly hatched tadpole breaths through its -
A.
Lung
B.
External gills
C.
Internal gills
D.
All of the above
Ans:
External gills
Explanation :
A tadpole resembles a fish and breathes through external gills. Adult frogs breathe through their lungs and exchange gases through their skin and the lining of their mouths.
[19] Virus in Latin means -
A.
Sweet
B.
Small
C.
Fluid
D.
Poison
Ans:
Poison
Explanation :
The word Virus has been derived from the Latin `virus' referring to poison and other noxious substances. A virus is a small infectious agent that replicates only inside the living cells of other organisms.
[20] Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
A.
Eco-niche
B.
Ecosystem
C.
Ecotone
D.
Habitat
Ans:
Ecosystem
Explanation :
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. The nature of the organisms—the species, functional groups and tropic levels to which they belong dictates the sorts of actions these individuals are capable of carrying out, and the relative efficiency with which they do so.
[21] Which disease is caused by Nickel?
A.
Itai Itai
B.
Dermatitis
C.
Learning disability
D.
Asthma
Ans:
Dermatitis
Explanation :
Nickel allergy is one of the most common causes of contact allergic dermatitis. In affected individuals, dermatitis (also called eczema) develops in places where nickel containing metal is touching the skin.
[22] Name the acid present in lemon.
A.
Phosphoric acid
B.
Carbonic acid
C.
Citric acid
D.
Malic acid
Ans:
Citric acid
Explanation :
Lemons have significant concentrations of citric acid (about 47 g/l in juice). Citric acid occurs naturally in citrus fruits.
[23] Name the tiny pores present on the surface of leaves in plants.
A.
Pits
B.
Stomata
C.
Trichomes
D.
Hydathodes
Ans:
Stomata
Explanation :
Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.
[24] Rinderpest disease of Cattle is caused by -
A.
Insects
B.
Bacteria
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.
[25] Haemoglobin in the blood is a complex protein rich in -
A.
Iron
B.
Silver
C.
Copper
D.
Gold
Ans:
Iron
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Iron is an essential part of hemoglobin. When iron stores are low, both hemoglobin and red blood cell production slows, causing anemia.
Explanation :
Glycogen, the principal storage form of glucose in animal cells, sometimes called "animal starch" for its resemblance with starch found in plants. It t is stored in liver and muscle cells and can be converted to glucose if needed. In the liver this conversion is regulated by the hormone glucagon.
[8] Maximum oxygen is available from -
A.
Deserts
B.
Green forests
C.
Grass lands
D.
Phytoplanktons
Ans:
Phytoplanktons
Explanation :
Most of Earth's oxygen comes from tiny ocean plants - called phytoplankton - that live near the water's surface and drift with the currents. Like all plants, they photosynthesize - that is, they use sun-light and carbon dioxide to make food. Scientists believe that phytoplankton contribute between 50 to 85 percent of the oxygen in Earth's atmosphere (National Geographic)
[9] Which one of the following is a vestigial organ?
A.
Eye-brow
B.
Collar-bone
C.
Wisdom-teeth
D.
Nails
Ans:
Wisdom-teeth
Explanation :
Wisdom teeth are vestigial third molars that human ancestors used to help in grinding down plant tissue. The common postulation is that the skulls of human ancestors had larger jaws with more teeth, which were possibly used to help chew down foliage to compensate for a lack of ability to efficiently digest the cellulose that makes up a plant cell wall. As human diets changed, smaller jaws were naturally selected, yet the third molars, or “wisdom teeth,” still commonly develop in human mouths.
[10] Water flows off the wings of birds and insects due to the presence of -
A.
Waxes
B.
Sugars
C.
Proteins
D.
Minerals
Ans:
Waxes
Explanation :
Insects and birds have the simplest surface waxes that serve to water proof feathers. These consist of long chain hydrocarbons. The interlocking feather barbs and a special waxy coating create a shield that water runs off of. Besides, while a few components present in surface lipids can prevent growth of pathogens, the total surface was layer certainly functions to prevent microbial entry into the organism.
[11] Insectivorous plants grow in soil which is deficient in -
A.
Nitrogen
B.
Sodium
C.
Calcium
D.
Magnesium
Ans:
Nitrogen
Explanation :
Carnivorous or insectivorous plants grow in places where the soil is thin or poor in nutrients, especially nitrogen, such as acidic bogs and rock outcroppings. In this habitat, plants that have alternative strategies for obtaining essential minerals are at a competitive advantage. The capture of insects provides such plants with a supplemental source of essential nutrients.
[12] Hind limbs thumping on ground by a rabbit is a behaviour related to -
A.
Courtship
B.
Preparation for a duet
C.
Warning signal to members
D.
Surrender of a stronger opponent
Ans:
Warning signal to members
Explanation :
A thump of either a single hind leg or both together shows the rabbit's fear or displeasure over something. In any case, it shows the identification of some danger in the vicinity by the rabbit. The rabbit feels threatened by a danger, and warns the rest of his warren.
[13] When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of -
A.
Vesicles
B.
Cleft
C.
Mitochondria
D.
All of the above
Ans:
Vesicles
Explanation :
The electrical impulses stimulate the release of vesicles. These store various neurotransmitters that are released at the synapse. Vesicles are essential for propagating nerve impulses between neurons and are constantly recreated by the cell.
[14] Which is the second largest gland of Human body?
A.
Liver
B.
Large Intestine
C.
Thorax
D.
Pancreas
Ans:
Pancreas
Explanation :
Liver is the largest gland in human body. It is also the largest (internal) organ in our body and can weigh up to 1.5-1.6 kg for a human adult. The Pancreas is the second largest gland in the body and is both an endocrine and exocrine gland.
[15] From which part of Opium plant we get morphine?
A.
Leaves
B.
Stem
C.
Bark
D.
Fruit coat
Ans:
Fruit coat
Explanation :
Morphine is the predominant alkaloid found in the varieties of opium poppy plant. It is obtained in form of liquid from the fruit capsule of the poppy. The latex which oozes from the incisions is collected, and dried to produce "raw opium" (about 8-14% morphine by thy weight).
[16] Which of the following is the primary sex organ in man?
A.
Prostrate
B.
Testis
C.
Vas defences
D.
Seminal vesicles
Ans:
Testis
Explanation :
In the case of male reproductive system the primary sex organs are a pair of testes lying outside the abdominal cavity, enclosed in a sac called the scrotum.
[17] Contraceptive pills in the market contain -
A.
steroid-hormones
B.
inorganic compounds
C.
herbicides
D.
antibiotics
Ans:
steroid-hormones
Explanation :
Contraceptive, pill: Commonly called "the pill," combined oral contraceptives are the most commonly used form of reversible birth control in the United States.
[18] The newly hatched tadpole breaths through its -
A.
Lung
B.
External gills
C.
Internal gills
D.
All of the above
Ans:
External gills
Explanation :
A tadpole resembles a fish and breathes through external gills. Adult frogs breathe through their lungs and exchange gases through their skin and the lining of their mouths.
[19] Virus in Latin means -
A.
Sweet
B.
Small
C.
Fluid
D.
Poison
Ans:
Poison
Explanation :
The word Virus has been derived from the Latin `virus' referring to poison and other noxious substances. A virus is a small infectious agent that replicates only inside the living cells of other organisms.
[20] Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
A.
Eco-niche
B.
Ecosystem
C.
Ecotone
D.
Habitat
Ans:
Ecosystem
Explanation :
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. The nature of the organisms—the species, functional groups and tropic levels to which they belong dictates the sorts of actions these individuals are capable of carrying out, and the relative efficiency with which they do so.
[21] Which disease is caused by Nickel?
A.
Itai Itai
B.
Dermatitis
C.
Learning disability
D.
Asthma
Ans:
Dermatitis
Explanation :
Nickel allergy is one of the most common causes of contact allergic dermatitis. In affected individuals, dermatitis (also called eczema) develops in places where nickel containing metal is touching the skin.
[22] Name the acid present in lemon.
A.
Phosphoric acid
B.
Carbonic acid
C.
Citric acid
D.
Malic acid
Ans:
Citric acid
Explanation :
Lemons have significant concentrations of citric acid (about 47 g/l in juice). Citric acid occurs naturally in citrus fruits.
[23] Name the tiny pores present on the surface of leaves in plants.
A.
Pits
B.
Stomata
C.
Trichomes
D.
Hydathodes
Ans:
Stomata
Explanation :
Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.
[24] Rinderpest disease of Cattle is caused by -
A.
Insects
B.
Bacteria
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.
[25] Haemoglobin in the blood is a complex protein rich in -
A.
Iron
B.
Silver
C.
Copper
D.
Gold
Ans:
Iron
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Iron is an essential part of hemoglobin. When iron stores are low, both hemoglobin and red blood cell production slows, causing anemia.
Explanation :
Wisdom teeth are vestigial third molars that human ancestors used to help in grinding down plant tissue. The common postulation is that the skulls of human ancestors had larger jaws with more teeth, which were possibly used to help chew down foliage to compensate for a lack of ability to efficiently digest the cellulose that makes up a plant cell wall. As human diets changed, smaller jaws were naturally selected, yet the third molars, or “wisdom teeth,” still commonly develop in human mouths.
[10] Water flows off the wings of birds and insects due to the presence of -
A.
Waxes
B.
Sugars
C.
Proteins
D.
Minerals
Ans:
Waxes
Explanation :
Insects and birds have the simplest surface waxes that serve to water proof feathers. These consist of long chain hydrocarbons. The interlocking feather barbs and a special waxy coating create a shield that water runs off of. Besides, while a few components present in surface lipids can prevent growth of pathogens, the total surface was layer certainly functions to prevent microbial entry into the organism.
[11] Insectivorous plants grow in soil which is deficient in -
A.
Nitrogen
B.
Sodium
C.
Calcium
D.
Magnesium
Ans:
Nitrogen
Explanation :
Carnivorous or insectivorous plants grow in places where the soil is thin or poor in nutrients, especially nitrogen, such as acidic bogs and rock outcroppings. In this habitat, plants that have alternative strategies for obtaining essential minerals are at a competitive advantage. The capture of insects provides such plants with a supplemental source of essential nutrients.
[12] Hind limbs thumping on ground by a rabbit is a behaviour related to -
A.
Courtship
B.
Preparation for a duet
C.
Warning signal to members
D.
Surrender of a stronger opponent
Ans:
Warning signal to members
Explanation :
A thump of either a single hind leg or both together shows the rabbit's fear or displeasure over something. In any case, it shows the identification of some danger in the vicinity by the rabbit. The rabbit feels threatened by a danger, and warns the rest of his warren.
[13] When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of -
A.
Vesicles
B.
Cleft
C.
Mitochondria
D.
All of the above
Ans:
Vesicles
Explanation :
The electrical impulses stimulate the release of vesicles. These store various neurotransmitters that are released at the synapse. Vesicles are essential for propagating nerve impulses between neurons and are constantly recreated by the cell.
[14] Which is the second largest gland of Human body?
A.
Liver
B.
Large Intestine
C.
Thorax
D.
Pancreas
Ans:
Pancreas
Explanation :
Liver is the largest gland in human body. It is also the largest (internal) organ in our body and can weigh up to 1.5-1.6 kg for a human adult. The Pancreas is the second largest gland in the body and is both an endocrine and exocrine gland.
[15] From which part of Opium plant we get morphine?
A.
Leaves
B.
Stem
C.
Bark
D.
Fruit coat
Ans:
Fruit coat
Explanation :
Morphine is the predominant alkaloid found in the varieties of opium poppy plant. It is obtained in form of liquid from the fruit capsule of the poppy. The latex which oozes from the incisions is collected, and dried to produce "raw opium" (about 8-14% morphine by thy weight).
[16] Which of the following is the primary sex organ in man?
A.
Prostrate
B.
Testis
C.
Vas defences
D.
Seminal vesicles
Ans:
Testis
Explanation :
In the case of male reproductive system the primary sex organs are a pair of testes lying outside the abdominal cavity, enclosed in a sac called the scrotum.
[17] Contraceptive pills in the market contain -
A.
steroid-hormones
B.
inorganic compounds
C.
herbicides
D.
antibiotics
Ans:
steroid-hormones
Explanation :
Contraceptive, pill: Commonly called "the pill," combined oral contraceptives are the most commonly used form of reversible birth control in the United States.
[18] The newly hatched tadpole breaths through its -
A.
Lung
B.
External gills
C.
Internal gills
D.
All of the above
Ans:
External gills
Explanation :
A tadpole resembles a fish and breathes through external gills. Adult frogs breathe through their lungs and exchange gases through their skin and the lining of their mouths.
[19] Virus in Latin means -
A.
Sweet
B.
Small
C.
Fluid
D.
Poison
Ans:
Poison
Explanation :
The word Virus has been derived from the Latin `virus' referring to poison and other noxious substances. A virus is a small infectious agent that replicates only inside the living cells of other organisms.
[20] Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
A.
Eco-niche
B.
Ecosystem
C.
Ecotone
D.
Habitat
Ans:
Ecosystem
Explanation :
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. The nature of the organisms—the species, functional groups and tropic levels to which they belong dictates the sorts of actions these individuals are capable of carrying out, and the relative efficiency with which they do so.
[21] Which disease is caused by Nickel?
A.
Itai Itai
B.
Dermatitis
C.
Learning disability
D.
Asthma
Ans:
Dermatitis
Explanation :
Nickel allergy is one of the most common causes of contact allergic dermatitis. In affected individuals, dermatitis (also called eczema) develops in places where nickel containing metal is touching the skin.
[22] Name the acid present in lemon.
A.
Phosphoric acid
B.
Carbonic acid
C.
Citric acid
D.
Malic acid
Ans:
Citric acid
Explanation :
Lemons have significant concentrations of citric acid (about 47 g/l in juice). Citric acid occurs naturally in citrus fruits.
[23] Name the tiny pores present on the surface of leaves in plants.
A.
Pits
B.
Stomata
C.
Trichomes
D.
Hydathodes
Ans:
Stomata
Explanation :
Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.
[24] Rinderpest disease of Cattle is caused by -
A.
Insects
B.
Bacteria
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.
[25] Haemoglobin in the blood is a complex protein rich in -
A.
Iron
B.
Silver
C.
Copper
D.
Gold
Ans:
Iron
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Iron is an essential part of hemoglobin. When iron stores are low, both hemoglobin and red blood cell production slows, causing anemia.
Explanation :
Carnivorous or insectivorous plants grow in places where the soil is thin or poor in nutrients, especially nitrogen, such as acidic bogs and rock outcroppings. In this habitat, plants that have alternative strategies for obtaining essential minerals are at a competitive advantage. The capture of insects provides such plants with a supplemental source of essential nutrients.
[12] Hind limbs thumping on ground by a rabbit is a behaviour related to -
A.
Courtship
B.
Preparation for a duet
C.
Warning signal to members
D.
Surrender of a stronger opponent
Ans:
Warning signal to members
Explanation :
A thump of either a single hind leg or both together shows the rabbit's fear or displeasure over something. In any case, it shows the identification of some danger in the vicinity by the rabbit. The rabbit feels threatened by a danger, and warns the rest of his warren.
[13] When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of -
A.
Vesicles
B.
Cleft
C.
Mitochondria
D.
All of the above
Ans:
Vesicles
Explanation :
The electrical impulses stimulate the release of vesicles. These store various neurotransmitters that are released at the synapse. Vesicles are essential for propagating nerve impulses between neurons and are constantly recreated by the cell.
[14] Which is the second largest gland of Human body?
A.
Liver
B.
Large Intestine
C.
Thorax
D.
Pancreas
Ans:
Pancreas
Explanation :
Liver is the largest gland in human body. It is also the largest (internal) organ in our body and can weigh up to 1.5-1.6 kg for a human adult. The Pancreas is the second largest gland in the body and is both an endocrine and exocrine gland.
[15] From which part of Opium plant we get morphine?
A.
Leaves
B.
Stem
C.
Bark
D.
Fruit coat
Ans:
Fruit coat
Explanation :
Morphine is the predominant alkaloid found in the varieties of opium poppy plant. It is obtained in form of liquid from the fruit capsule of the poppy. The latex which oozes from the incisions is collected, and dried to produce "raw opium" (about 8-14% morphine by thy weight).
[16] Which of the following is the primary sex organ in man?
A.
Prostrate
B.
Testis
C.
Vas defences
D.
Seminal vesicles
Ans:
Testis
Explanation :
In the case of male reproductive system the primary sex organs are a pair of testes lying outside the abdominal cavity, enclosed in a sac called the scrotum.
[17] Contraceptive pills in the market contain -
A.
steroid-hormones
B.
inorganic compounds
C.
herbicides
D.
antibiotics
Ans:
steroid-hormones
Explanation :
Contraceptive, pill: Commonly called "the pill," combined oral contraceptives are the most commonly used form of reversible birth control in the United States.
[18] The newly hatched tadpole breaths through its -
A.
Lung
B.
External gills
C.
Internal gills
D.
All of the above
Ans:
External gills
Explanation :
A tadpole resembles a fish and breathes through external gills. Adult frogs breathe through their lungs and exchange gases through their skin and the lining of their mouths.
[19] Virus in Latin means -
A.
Sweet
B.
Small
C.
Fluid
D.
Poison
Ans:
Poison
Explanation :
The word Virus has been derived from the Latin `virus' referring to poison and other noxious substances. A virus is a small infectious agent that replicates only inside the living cells of other organisms.
[20] Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
A.
Eco-niche
B.
Ecosystem
C.
Ecotone
D.
Habitat
Ans:
Ecosystem
Explanation :
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. The nature of the organisms—the species, functional groups and tropic levels to which they belong dictates the sorts of actions these individuals are capable of carrying out, and the relative efficiency with which they do so.
[21] Which disease is caused by Nickel?
A.
Itai Itai
B.
Dermatitis
C.
Learning disability
D.
Asthma
Ans:
Dermatitis
Explanation :
Nickel allergy is one of the most common causes of contact allergic dermatitis. In affected individuals, dermatitis (also called eczema) develops in places where nickel containing metal is touching the skin.
[22] Name the acid present in lemon.
A.
Phosphoric acid
B.
Carbonic acid
C.
Citric acid
D.
Malic acid
Ans:
Citric acid
Explanation :
Lemons have significant concentrations of citric acid (about 47 g/l in juice). Citric acid occurs naturally in citrus fruits.
[23] Name the tiny pores present on the surface of leaves in plants.
A.
Pits
B.
Stomata
C.
Trichomes
D.
Hydathodes
Ans:
Stomata
Explanation :
Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.
[24] Rinderpest disease of Cattle is caused by -
A.
Insects
B.
Bacteria
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.
[25] Haemoglobin in the blood is a complex protein rich in -
A.
Iron
B.
Silver
C.
Copper
D.
Gold
Ans:
Iron
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Iron is an essential part of hemoglobin. When iron stores are low, both hemoglobin and red blood cell production slows, causing anemia.
Explanation :
The electrical impulses stimulate the release of vesicles. These store various neurotransmitters that are released at the synapse. Vesicles are essential for propagating nerve impulses between neurons and are constantly recreated by the cell.
[14] Which is the second largest gland of Human body?
A.
Liver
B.
Large Intestine
C.
Thorax
D.
Pancreas
Ans:
Pancreas
Explanation :
Liver is the largest gland in human body. It is also the largest (internal) organ in our body and can weigh up to 1.5-1.6 kg for a human adult. The Pancreas is the second largest gland in the body and is both an endocrine and exocrine gland.
[15] From which part of Opium plant we get morphine?
A.
Leaves
B.
Stem
C.
Bark
D.
Fruit coat
Ans:
Fruit coat
Explanation :
Morphine is the predominant alkaloid found in the varieties of opium poppy plant. It is obtained in form of liquid from the fruit capsule of the poppy. The latex which oozes from the incisions is collected, and dried to produce "raw opium" (about 8-14% morphine by thy weight).
[16] Which of the following is the primary sex organ in man?
A.
Prostrate
B.
Testis
C.
Vas defences
D.
Seminal vesicles
Ans:
Testis
Explanation :
In the case of male reproductive system the primary sex organs are a pair of testes lying outside the abdominal cavity, enclosed in a sac called the scrotum.
[17] Contraceptive pills in the market contain -
A.
steroid-hormones
B.
inorganic compounds
C.
herbicides
D.
antibiotics
Ans:
steroid-hormones
Explanation :
Contraceptive, pill: Commonly called "the pill," combined oral contraceptives are the most commonly used form of reversible birth control in the United States.
[18] The newly hatched tadpole breaths through its -
A.
Lung
B.
External gills
C.
Internal gills
D.
All of the above
Ans:
External gills
Explanation :
A tadpole resembles a fish and breathes through external gills. Adult frogs breathe through their lungs and exchange gases through their skin and the lining of their mouths.
[19] Virus in Latin means -
A.
Sweet
B.
Small
C.
Fluid
D.
Poison
Ans:
Poison
Explanation :
The word Virus has been derived from the Latin `virus' referring to poison and other noxious substances. A virus is a small infectious agent that replicates only inside the living cells of other organisms.
[20] Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
A.
Eco-niche
B.
Ecosystem
C.
Ecotone
D.
Habitat
Ans:
Ecosystem
Explanation :
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. The nature of the organisms—the species, functional groups and tropic levels to which they belong dictates the sorts of actions these individuals are capable of carrying out, and the relative efficiency with which they do so.
[21] Which disease is caused by Nickel?
A.
Itai Itai
B.
Dermatitis
C.
Learning disability
D.
Asthma
Ans:
Dermatitis
Explanation :
Nickel allergy is one of the most common causes of contact allergic dermatitis. In affected individuals, dermatitis (also called eczema) develops in places where nickel containing metal is touching the skin.
[22] Name the acid present in lemon.
A.
Phosphoric acid
B.
Carbonic acid
C.
Citric acid
D.
Malic acid
Ans:
Citric acid
Explanation :
Lemons have significant concentrations of citric acid (about 47 g/l in juice). Citric acid occurs naturally in citrus fruits.
[23] Name the tiny pores present on the surface of leaves in plants.
A.
Pits
B.
Stomata
C.
Trichomes
D.
Hydathodes
Ans:
Stomata
Explanation :
Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.
[24] Rinderpest disease of Cattle is caused by -
A.
Insects
B.
Bacteria
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.
[25] Haemoglobin in the blood is a complex protein rich in -
A.
Iron
B.
Silver
C.
Copper
D.
Gold
Ans:
Iron
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Iron is an essential part of hemoglobin. When iron stores are low, both hemoglobin and red blood cell production slows, causing anemia.
Explanation :
Morphine is the predominant alkaloid found in the varieties of opium poppy plant. It is obtained in form of liquid from the fruit capsule of the poppy. The latex which oozes from the incisions is collected, and dried to produce "raw opium" (about 8-14% morphine by thy weight).
[16] Which of the following is the primary sex organ in man?
A.
Prostrate
B.
Testis
C.
Vas defences
D.
Seminal vesicles
Ans:
Testis
Explanation :
In the case of male reproductive system the primary sex organs are a pair of testes lying outside the abdominal cavity, enclosed in a sac called the scrotum.
[17] Contraceptive pills in the market contain -
A.
steroid-hormones
B.
inorganic compounds
C.
herbicides
D.
antibiotics
Ans:
steroid-hormones
Explanation :
Contraceptive, pill: Commonly called "the pill," combined oral contraceptives are the most commonly used form of reversible birth control in the United States.
[18] The newly hatched tadpole breaths through its -
A.
Lung
B.
External gills
C.
Internal gills
D.
All of the above
Ans:
External gills
Explanation :
A tadpole resembles a fish and breathes through external gills. Adult frogs breathe through their lungs and exchange gases through their skin and the lining of their mouths.
[19] Virus in Latin means -
A.
Sweet
B.
Small
C.
Fluid
D.
Poison
Ans:
Poison
Explanation :
The word Virus has been derived from the Latin `virus' referring to poison and other noxious substances. A virus is a small infectious agent that replicates only inside the living cells of other organisms.
[20] Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
A.
Eco-niche
B.
Ecosystem
C.
Ecotone
D.
Habitat
Ans:
Ecosystem
Explanation :
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. The nature of the organisms—the species, functional groups and tropic levels to which they belong dictates the sorts of actions these individuals are capable of carrying out, and the relative efficiency with which they do so.
[21] Which disease is caused by Nickel?
A.
Itai Itai
B.
Dermatitis
C.
Learning disability
D.
Asthma
Ans:
Dermatitis
Explanation :
Nickel allergy is one of the most common causes of contact allergic dermatitis. In affected individuals, dermatitis (also called eczema) develops in places where nickel containing metal is touching the skin.
[22] Name the acid present in lemon.
A.
Phosphoric acid
B.
Carbonic acid
C.
Citric acid
D.
Malic acid
Ans:
Citric acid
Explanation :
Lemons have significant concentrations of citric acid (about 47 g/l in juice). Citric acid occurs naturally in citrus fruits.
[23] Name the tiny pores present on the surface of leaves in plants.
A.
Pits
B.
Stomata
C.
Trichomes
D.
Hydathodes
Ans:
Stomata
Explanation :
Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.
[24] Rinderpest disease of Cattle is caused by -
A.
Insects
B.
Bacteria
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.
[25] Haemoglobin in the blood is a complex protein rich in -
A.
Iron
B.
Silver
C.
Copper
D.
Gold
Ans:
Iron
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Iron is an essential part of hemoglobin. When iron stores are low, both hemoglobin and red blood cell production slows, causing anemia.
Explanation :
Contraceptive, pill: Commonly called "the pill," combined oral contraceptives are the most commonly used form of reversible birth control in the United States.
[18] The newly hatched tadpole breaths through its -
A.
Lung
B.
External gills
C.
Internal gills
D.
All of the above
Ans:
External gills
Explanation :
A tadpole resembles a fish and breathes through external gills. Adult frogs breathe through their lungs and exchange gases through their skin and the lining of their mouths.
[19] Virus in Latin means -
A.
Sweet
B.
Small
C.
Fluid
D.
Poison
Ans:
Poison
Explanation :
The word Virus has been derived from the Latin `virus' referring to poison and other noxious substances. A virus is a small infectious agent that replicates only inside the living cells of other organisms.
[20] Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
A.
Eco-niche
B.
Ecosystem
C.
Ecotone
D.
Habitat
Ans:
Ecosystem
Explanation :
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. The nature of the organisms—the species, functional groups and tropic levels to which they belong dictates the sorts of actions these individuals are capable of carrying out, and the relative efficiency with which they do so.
[21] Which disease is caused by Nickel?
A.
Itai Itai
B.
Dermatitis
C.
Learning disability
D.
Asthma
Ans:
Dermatitis
Explanation :
Nickel allergy is one of the most common causes of contact allergic dermatitis. In affected individuals, dermatitis (also called eczema) develops in places where nickel containing metal is touching the skin.
[22] Name the acid present in lemon.
A.
Phosphoric acid
B.
Carbonic acid
C.
Citric acid
D.
Malic acid
Ans:
Citric acid
Explanation :
Lemons have significant concentrations of citric acid (about 47 g/l in juice). Citric acid occurs naturally in citrus fruits.
[23] Name the tiny pores present on the surface of leaves in plants.
A.
Pits
B.
Stomata
C.
Trichomes
D.
Hydathodes
Ans:
Stomata
Explanation :
Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.
[24] Rinderpest disease of Cattle is caused by -
A.
Insects
B.
Bacteria
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.
[25] Haemoglobin in the blood is a complex protein rich in -
A.
Iron
B.
Silver
C.
Copper
D.
Gold
Ans:
Iron
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Iron is an essential part of hemoglobin. When iron stores are low, both hemoglobin and red blood cell production slows, causing anemia.
Explanation :
The word Virus has been derived from the Latin `virus' referring to poison and other noxious substances. A virus is a small infectious agent that replicates only inside the living cells of other organisms.
[20] Which one of the following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
A.
Eco-niche
B.
Ecosystem
C.
Ecotone
D.
Habitat
Ans:
Ecosystem
Explanation :
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. The nature of the organisms—the species, functional groups and tropic levels to which they belong dictates the sorts of actions these individuals are capable of carrying out, and the relative efficiency with which they do so.
[21] Which disease is caused by Nickel?
A.
Itai Itai
B.
Dermatitis
C.
Learning disability
D.
Asthma
Ans:
Dermatitis
Explanation :
Nickel allergy is one of the most common causes of contact allergic dermatitis. In affected individuals, dermatitis (also called eczema) develops in places where nickel containing metal is touching the skin.
[22] Name the acid present in lemon.
A.
Phosphoric acid
B.
Carbonic acid
C.
Citric acid
D.
Malic acid
Ans:
Citric acid
Explanation :
Lemons have significant concentrations of citric acid (about 47 g/l in juice). Citric acid occurs naturally in citrus fruits.
[23] Name the tiny pores present on the surface of leaves in plants.
A.
Pits
B.
Stomata
C.
Trichomes
D.
Hydathodes
Ans:
Stomata
Explanation :
Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.
[24] Rinderpest disease of Cattle is caused by -
A.
Insects
B.
Bacteria
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.
[25] Haemoglobin in the blood is a complex protein rich in -
A.
Iron
B.
Silver
C.
Copper
D.
Gold
Ans:
Iron
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Iron is an essential part of hemoglobin. When iron stores are low, both hemoglobin and red blood cell production slows, causing anemia.
Explanation :
Nickel allergy is one of the most common causes of contact allergic dermatitis. In affected individuals, dermatitis (also called eczema) develops in places where nickel containing metal is touching the skin.
[22] Name the acid present in lemon.
A.
Phosphoric acid
B.
Carbonic acid
C.
Citric acid
D.
Malic acid
Ans:
Citric acid
Explanation :
Lemons have significant concentrations of citric acid (about 47 g/l in juice). Citric acid occurs naturally in citrus fruits.
[23] Name the tiny pores present on the surface of leaves in plants.
A.
Pits
B.
Stomata
C.
Trichomes
D.
Hydathodes
Ans:
Stomata
Explanation :
Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.
[24] Rinderpest disease of Cattle is caused by -
A.
Insects
B.
Bacteria
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.
[25] Haemoglobin in the blood is a complex protein rich in -
A.
Iron
B.
Silver
C.
Copper
D.
Gold
Ans:
Iron
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Iron is an essential part of hemoglobin. When iron stores are low, both hemoglobin and red blood cell production slows, causing anemia.
Explanation :
Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.
[24] Rinderpest disease of Cattle is caused by -
A.
Insects
B.
Bacteria
C.
Virus
D.
Protozoa
Ans:
Virus
Explanation :
Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.
[25] Haemoglobin in the blood is a complex protein rich in -
A.
Iron
B.
Silver
C.
Copper
D.
Gold
Ans:
Iron
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Iron is an essential part of hemoglobin. When iron stores are low, both hemoglobin and red blood cell production slows, causing anemia.
Explanation :
Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of all vertebrates. Iron is an essential part of hemoglobin. When iron stores are low, both hemoglobin and red blood cell production slows, causing anemia.