[1] The function of Haemoglobin is to :
A.
provide amino acids
B.
carry oxygen
C.
provide enzymes
D.
help in excretion
Ans:
carry oxygen
Explanation :
Haemoglobin is an iron-containing protein in red blood cells. Hemoglobin in the blood carries oxygen from the respiratory organs (lungs or gills) to the rest of the body (i.e. the tissues) where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[2] When nitrogenous waste accumulates in the blood which organ is not functioning?
A.
Liver
B.
Lungs
C.
Kidneys
D.
Heart
Ans:
Kidneys
Explanation :
Acute kidney failure (AKF) occurs when there is a sudden reduction in kidney function that results in nitrogenous wastes accumulating in the blood (azotemia). The accumulation of nitrogenous wastes is known as uremia. If untreated, uremia can cause coma and eventually death.
[3] Which one of the following food-stuffs of the same quantity possesses the highest calorific value?
A.
Butter
B.
Apple
C.
Cheese
D.
Sugar
Ans:
Butter
Explanation :
Calorific value refers to calories or thermal units contained in one unit of a substance and released when the substance is burned. Fats have higher calorific value than other food items. The calorific value of different food items (per 100 gram) are: Butter: 740; Cheese: 310; Sugar: 405; and Apple: 45.
[4] EEG is a technique to record the activity of -
A.
heart
B.
lungs
C.
brain
D.
muscles
Ans:
brain
Explanation :
Electroencephalography (EEG) is the recording of electrical activity along the scalp. EEG measures voltage fluctuations resulting from ionic current flows within the neurons of the brain.
[5] Lactose is present in -
A.
grapes
B.
milk
C.
lime
D.
vinegar
Ans:
milk
Explanation :
Lactose is a type of sugar, naturally found in milk and dairy products. In the intestine, lactose is transformed by lactase, an enzyme, into glucose and galactose, both simpler sugars, which are used by our body for energy and various functions. Most people have difficulty digesting lactose.
[6] The colour of cow's milk is slightly yellow due to the presence of -
A.
xanthophyll
B.
riboflavin
C.
ribulose
D.
carotin
Ans:
carotin
Explanation :
Carotene mostly affects the colour of fat. Since milk is comprised of around 3.5% milk fat, a dairy cow that is grass-fed tends to produce yellow milk, over a dairy cow that is not grass-fed and fed primarily a mix of hay, silage and grain.
[7] Which one of these is a communicable disease?
A.
Diabetes
B.
Diphtheria
C.
Arthritis
D.
Cancer
Ans:
Diphtheria
Explanation :
Diphtheria is an acute an upper respiratory tract illness and infectious disease caused by the bacteria Corynebacterium diphtheriae. It is spread by direct physical contact or breathing the aerosolized secretions of infected individuals.
[8] Which one of the following is a hereditary disease?
A.
Haemophilia
B.
Myopia
C.
Anaemia
D.
Leukemia
Ans:
Haemophilia
Explanation :
Hemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken. It has been associated with royal families due to inbreeding, and is sometimes called the 'Royal Disease.'
[9] What is the Normal Blood Volume in human adult?
A.
One litre
B.
Three litres
C.
Five litres
D.
Seven litres
Ans:
Five litres
Explanation :
The average adult has a blood volume of roughly 5 liters, which is composed of plasma and several kinds of cells. By volume, the red blood cells constitute about 45% of whole blood, the plasma about 54.3%, and white cells about 0.7%.
[10] Which of the following has no blood, but respires?
A.
Fish
B.
Earthworm
C.
Hydra
D.
Cockroach
Ans:
Hydra
Explanation :
In animals, three main types of respiratory systems exist: respiration through the skin, respiration through the gills or respiration through internal air structures. Respiration through the skin, as in the Hydra, involves the passing of molecules into and out of the body via diffusion. Aquatic animals use gills, which are structures composed of tissues and blood vessels that extend from the body, for their respiration needs. Most terrestrial animals use internal air structures, such as lungs or tracheae, to respire. Cockroach, snail and earthworm has blood.
[11] Organisms that generate energy using light are known as -
A.
Chaemolithotrophs
B.
Oligotrophs
C.
Bacteria
D.
Photoautotrophs
Ans:
Photoautotrophs
Explanation :
0
[12] The fasting blood glucose level in adults in mg/100 ml is -
A.
200
B.
160
C.
100
D.
60
Ans:
100
Explanation :
The normal range of concentration of fasting blood sugar is 80 to 120 mg/ml; in the testing of true blood sugar, the normal range of concentration is 70 to 100 mg/ml. So normal glucose levels fall between 70 and 150 mg. Higher levels may indicate diseases such as diabetes mellitus.
[13] Entomology is the study of -
A.
Birds
B.
Insects
C.
Fossils
D.
Fungi
Ans:
Insects
Explanation :
Entomology is the scientific study of insects, a branch of arthropodology. which in turn is a branch of biology. It is derived from Lhe Greek word `atomos' which means "that which is cut in pieces or engraved/ segmented", hence "insect".
[14] Exobiology is a science that deals with -
A.
extinct forms
B.
life in other planets
C.
life in the outer space
D.
life in marine habitat
Ans:
life in the outer space
Explanation :
Exobiology is the branch of biology that deals with the search for extraterrestrial life and the effects of extraterrestrial surroundings or outer space on living organisms.
[15] Which of the following fuels causes minimum environmental pollution?
A.
Diesel
B.
Kerosene
C.
Hydrogen
D.
Coal
Ans:
Hydrogen
Explanation :
Most of environmental (air) pollution results from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power. All these produce harmful CO2 or its variants. On the contrary, when hydrogen burns in air, it produces nothing but water vapor. It is therefore the cleanest possible as it doesn’t produce CO2.
[16] Name the organ where the embryo develops -
A.
Uterus
B.
Fallopian tube
C.
Ureter
D.
Cervix
Ans:
Ureter
Explanation :
Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid filled membranes. The embryo develops within the amniotic sac, under the lining of the uterus on one side. This stage is characterized by the formation of most internal organs and external body structures. Most organs begin to form about 3 weeks after fertilization, which equals 5 weeks of pregnancy.
[17] Which of the following organelle is responsible for synthesizing of proteins in the cell?
A.
Golgi apparatus
B.
Ribosome
C.
Lysosome
D.
Nucleus
Ans:
Ribosome
Explanation :
The Ribosome, a complex molecule made of ribosomal RNA molecules, is responsible for protein synthesis in the cells.
[18] Plants get water through the roots because of —
A.
elasticity
B.
capillarity
C.
viscosity
D.
photosynthesis
Ans:
capillarity
Explanation :
Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant (through the network of xylem vessels) through a combination of capillary action and "transiprational pull." Water moves through the plant by means of capillary action.
[19] The central control of respiratory activity in human body is exercised by -
A.
cerebrum
B.
cerebellum
C.
medulla oblongata
D.
hypothalamus
Ans:
medulla oblongata
Explanation :
The medulla oblongata is a portion of the hindbrain that controls autonomic functions such as breathing, digestion, heart and blood vessel function, swallowing and sneezing. Motor and sensory neurons from the midbrain and forebrain travel through the medulla. As a part of the brainstem, the medulla oblongata helps in the transferring of messages between various parts of the brain and the spinal cord.
[20] The biological decomposition of organic substances in wastes under controlled conditions known as -
A.
composting
B.
incineration
C.
sanitary landfill
D.
pyrolysis
Ans:
composting
Explanation :
0
[21] Human bone does not contain -
A.
calcium
B.
carbon
C.
oxygen
D.
phosphorous
Ans:
oxygen
Explanation :
Human bone contains calcium, carbon, phosphorous. Bones are made of connective tissue reinforced with calcium and specialized bone cells. Most bones also contain bone marrow, where blood cells are made.
[22] Birds usually have a single -
A.
Kidney
B.
Lung
C.
Testis
D.
Ovary
Ans:
Ovary
Explanation :
Female birds in most families have only one functional ovary (the left one), connected to an oviduct — although two ovaries are present in the embryonic stage of each female bird.
[23] Alfalfa is the name of a kind of -
A.
Forest
B.
Crop
C.
Grass
D.
None of these
Ans:
Crop
Explanation :
Alfalfa is a small seeded crop, and has a slowly-growing seedling, but after several months of establishment, forms a tough 'crown' at the top of the root system. This crown contains many shoot buds that enables alfalfa to re-grow many times after being grazed or harvested. Alfalfa is widely grown throughout the world as forage for cattle.
[24] The protein present in the finger nail is -
A.
Actin
B.
Myosin
C.
Globin
D.
Keratin
Ans:
Keratin
Explanation :
Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.
[25] 'Comose’ seeds are seeds with -
A.
Long hairs
B.
Wings
C.
Bristles
D.
Hooks
Ans:
Long hairs
Explanation :
The word ‘comose’ means ‘hairy’ in Latin. It refers to certain seeds (such as cotton) having a tuft or tufts of hair. The seeds of plants like Calotropis, Gossypium, etc, possess a large number of hairs which enable them to float in air. Such seeds are described as comose.
Explanation :
Haemoglobin is an iron-containing protein in red blood cells. Hemoglobin in the blood carries oxygen from the respiratory organs (lungs or gills) to the rest of the body (i.e. the tissues) where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[2] When nitrogenous waste accumulates in the blood which organ is not functioning?
A.
Liver
B.
Lungs
C.
Kidneys
D.
Heart
Ans:
Kidneys
Explanation :
Acute kidney failure (AKF) occurs when there is a sudden reduction in kidney function that results in nitrogenous wastes accumulating in the blood (azotemia). The accumulation of nitrogenous wastes is known as uremia. If untreated, uremia can cause coma and eventually death.
[3] Which one of the following food-stuffs of the same quantity possesses the highest calorific value?
A.
Butter
B.
Apple
C.
Cheese
D.
Sugar
Ans:
Butter
Explanation :
Calorific value refers to calories or thermal units contained in one unit of a substance and released when the substance is burned. Fats have higher calorific value than other food items. The calorific value of different food items (per 100 gram) are: Butter: 740; Cheese: 310; Sugar: 405; and Apple: 45.
[4] EEG is a technique to record the activity of -
A.
heart
B.
lungs
C.
brain
D.
muscles
Ans:
brain
Explanation :
Electroencephalography (EEG) is the recording of electrical activity along the scalp. EEG measures voltage fluctuations resulting from ionic current flows within the neurons of the brain.
[5] Lactose is present in -
A.
grapes
B.
milk
C.
lime
D.
vinegar
Ans:
milk
Explanation :
Lactose is a type of sugar, naturally found in milk and dairy products. In the intestine, lactose is transformed by lactase, an enzyme, into glucose and galactose, both simpler sugars, which are used by our body for energy and various functions. Most people have difficulty digesting lactose.
[6] The colour of cow's milk is slightly yellow due to the presence of -
A.
xanthophyll
B.
riboflavin
C.
ribulose
D.
carotin
Ans:
carotin
Explanation :
Carotene mostly affects the colour of fat. Since milk is comprised of around 3.5% milk fat, a dairy cow that is grass-fed tends to produce yellow milk, over a dairy cow that is not grass-fed and fed primarily a mix of hay, silage and grain.
[7] Which one of these is a communicable disease?
A.
Diabetes
B.
Diphtheria
C.
Arthritis
D.
Cancer
Ans:
Diphtheria
Explanation :
Diphtheria is an acute an upper respiratory tract illness and infectious disease caused by the bacteria Corynebacterium diphtheriae. It is spread by direct physical contact or breathing the aerosolized secretions of infected individuals.
[8] Which one of the following is a hereditary disease?
A.
Haemophilia
B.
Myopia
C.
Anaemia
D.
Leukemia
Ans:
Haemophilia
Explanation :
Hemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken. It has been associated with royal families due to inbreeding, and is sometimes called the 'Royal Disease.'
[9] What is the Normal Blood Volume in human adult?
A.
One litre
B.
Three litres
C.
Five litres
D.
Seven litres
Ans:
Five litres
Explanation :
The average adult has a blood volume of roughly 5 liters, which is composed of plasma and several kinds of cells. By volume, the red blood cells constitute about 45% of whole blood, the plasma about 54.3%, and white cells about 0.7%.
[10] Which of the following has no blood, but respires?
A.
Fish
B.
Earthworm
C.
Hydra
D.
Cockroach
Ans:
Hydra
Explanation :
In animals, three main types of respiratory systems exist: respiration through the skin, respiration through the gills or respiration through internal air structures. Respiration through the skin, as in the Hydra, involves the passing of molecules into and out of the body via diffusion. Aquatic animals use gills, which are structures composed of tissues and blood vessels that extend from the body, for their respiration needs. Most terrestrial animals use internal air structures, such as lungs or tracheae, to respire. Cockroach, snail and earthworm has blood.
[11] Organisms that generate energy using light are known as -
A.
Chaemolithotrophs
B.
Oligotrophs
C.
Bacteria
D.
Photoautotrophs
Ans:
Photoautotrophs
Explanation :
0
[12] The fasting blood glucose level in adults in mg/100 ml is -
A.
200
B.
160
C.
100
D.
60
Ans:
100
Explanation :
The normal range of concentration of fasting blood sugar is 80 to 120 mg/ml; in the testing of true blood sugar, the normal range of concentration is 70 to 100 mg/ml. So normal glucose levels fall between 70 and 150 mg. Higher levels may indicate diseases such as diabetes mellitus.
[13] Entomology is the study of -
A.
Birds
B.
Insects
C.
Fossils
D.
Fungi
Ans:
Insects
Explanation :
Entomology is the scientific study of insects, a branch of arthropodology. which in turn is a branch of biology. It is derived from Lhe Greek word `atomos' which means "that which is cut in pieces or engraved/ segmented", hence "insect".
[14] Exobiology is a science that deals with -
A.
extinct forms
B.
life in other planets
C.
life in the outer space
D.
life in marine habitat
Ans:
life in the outer space
Explanation :
Exobiology is the branch of biology that deals with the search for extraterrestrial life and the effects of extraterrestrial surroundings or outer space on living organisms.
[15] Which of the following fuels causes minimum environmental pollution?
A.
Diesel
B.
Kerosene
C.
Hydrogen
D.
Coal
Ans:
Hydrogen
Explanation :
Most of environmental (air) pollution results from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power. All these produce harmful CO2 or its variants. On the contrary, when hydrogen burns in air, it produces nothing but water vapor. It is therefore the cleanest possible as it doesn’t produce CO2.
[16] Name the organ where the embryo develops -
A.
Uterus
B.
Fallopian tube
C.
Ureter
D.
Cervix
Ans:
Ureter
Explanation :
Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid filled membranes. The embryo develops within the amniotic sac, under the lining of the uterus on one side. This stage is characterized by the formation of most internal organs and external body structures. Most organs begin to form about 3 weeks after fertilization, which equals 5 weeks of pregnancy.
[17] Which of the following organelle is responsible for synthesizing of proteins in the cell?
A.
Golgi apparatus
B.
Ribosome
C.
Lysosome
D.
Nucleus
Ans:
Ribosome
Explanation :
The Ribosome, a complex molecule made of ribosomal RNA molecules, is responsible for protein synthesis in the cells.
[18] Plants get water through the roots because of —
A.
elasticity
B.
capillarity
C.
viscosity
D.
photosynthesis
Ans:
capillarity
Explanation :
Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant (through the network of xylem vessels) through a combination of capillary action and "transiprational pull." Water moves through the plant by means of capillary action.
[19] The central control of respiratory activity in human body is exercised by -
A.
cerebrum
B.
cerebellum
C.
medulla oblongata
D.
hypothalamus
Ans:
medulla oblongata
Explanation :
The medulla oblongata is a portion of the hindbrain that controls autonomic functions such as breathing, digestion, heart and blood vessel function, swallowing and sneezing. Motor and sensory neurons from the midbrain and forebrain travel through the medulla. As a part of the brainstem, the medulla oblongata helps in the transferring of messages between various parts of the brain and the spinal cord.
[20] The biological decomposition of organic substances in wastes under controlled conditions known as -
A.
composting
B.
incineration
C.
sanitary landfill
D.
pyrolysis
Ans:
composting
Explanation :
0
[21] Human bone does not contain -
A.
calcium
B.
carbon
C.
oxygen
D.
phosphorous
Ans:
oxygen
Explanation :
Human bone contains calcium, carbon, phosphorous. Bones are made of connective tissue reinforced with calcium and specialized bone cells. Most bones also contain bone marrow, where blood cells are made.
[22] Birds usually have a single -
A.
Kidney
B.
Lung
C.
Testis
D.
Ovary
Ans:
Ovary
Explanation :
Female birds in most families have only one functional ovary (the left one), connected to an oviduct — although two ovaries are present in the embryonic stage of each female bird.
[23] Alfalfa is the name of a kind of -
A.
Forest
B.
Crop
C.
Grass
D.
None of these
Ans:
Crop
Explanation :
Alfalfa is a small seeded crop, and has a slowly-growing seedling, but after several months of establishment, forms a tough 'crown' at the top of the root system. This crown contains many shoot buds that enables alfalfa to re-grow many times after being grazed or harvested. Alfalfa is widely grown throughout the world as forage for cattle.
[24] The protein present in the finger nail is -
A.
Actin
B.
Myosin
C.
Globin
D.
Keratin
Ans:
Keratin
Explanation :
Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.
[25] 'Comose’ seeds are seeds with -
A.
Long hairs
B.
Wings
C.
Bristles
D.
Hooks
Ans:
Long hairs
Explanation :
The word ‘comose’ means ‘hairy’ in Latin. It refers to certain seeds (such as cotton) having a tuft or tufts of hair. The seeds of plants like Calotropis, Gossypium, etc, possess a large number of hairs which enable them to float in air. Such seeds are described as comose.
Explanation :
Calorific value refers to calories or thermal units contained in one unit of a substance and released when the substance is burned. Fats have higher calorific value than other food items. The calorific value of different food items (per 100 gram) are: Butter: 740; Cheese: 310; Sugar: 405; and Apple: 45.
[4] EEG is a technique to record the activity of -
A.
heart
B.
lungs
C.
brain
D.
muscles
Ans:
brain
Explanation :
Electroencephalography (EEG) is the recording of electrical activity along the scalp. EEG measures voltage fluctuations resulting from ionic current flows within the neurons of the brain.
[5] Lactose is present in -
A.
grapes
B.
milk
C.
lime
D.
vinegar
Ans:
milk
Explanation :
Lactose is a type of sugar, naturally found in milk and dairy products. In the intestine, lactose is transformed by lactase, an enzyme, into glucose and galactose, both simpler sugars, which are used by our body for energy and various functions. Most people have difficulty digesting lactose.
[6] The colour of cow's milk is slightly yellow due to the presence of -
A.
xanthophyll
B.
riboflavin
C.
ribulose
D.
carotin
Ans:
carotin
Explanation :
Carotene mostly affects the colour of fat. Since milk is comprised of around 3.5% milk fat, a dairy cow that is grass-fed tends to produce yellow milk, over a dairy cow that is not grass-fed and fed primarily a mix of hay, silage and grain.
[7] Which one of these is a communicable disease?
A.
Diabetes
B.
Diphtheria
C.
Arthritis
D.
Cancer
Ans:
Diphtheria
Explanation :
Diphtheria is an acute an upper respiratory tract illness and infectious disease caused by the bacteria Corynebacterium diphtheriae. It is spread by direct physical contact or breathing the aerosolized secretions of infected individuals.
[8] Which one of the following is a hereditary disease?
A.
Haemophilia
B.
Myopia
C.
Anaemia
D.
Leukemia
Ans:
Haemophilia
Explanation :
Hemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken. It has been associated with royal families due to inbreeding, and is sometimes called the 'Royal Disease.'
[9] What is the Normal Blood Volume in human adult?
A.
One litre
B.
Three litres
C.
Five litres
D.
Seven litres
Ans:
Five litres
Explanation :
The average adult has a blood volume of roughly 5 liters, which is composed of plasma and several kinds of cells. By volume, the red blood cells constitute about 45% of whole blood, the plasma about 54.3%, and white cells about 0.7%.
[10] Which of the following has no blood, but respires?
A.
Fish
B.
Earthworm
C.
Hydra
D.
Cockroach
Ans:
Hydra
Explanation :
In animals, three main types of respiratory systems exist: respiration through the skin, respiration through the gills or respiration through internal air structures. Respiration through the skin, as in the Hydra, involves the passing of molecules into and out of the body via diffusion. Aquatic animals use gills, which are structures composed of tissues and blood vessels that extend from the body, for their respiration needs. Most terrestrial animals use internal air structures, such as lungs or tracheae, to respire. Cockroach, snail and earthworm has blood.
[11] Organisms that generate energy using light are known as -
A.
Chaemolithotrophs
B.
Oligotrophs
C.
Bacteria
D.
Photoautotrophs
Ans:
Photoautotrophs
Explanation :
0
[12] The fasting blood glucose level in adults in mg/100 ml is -
A.
200
B.
160
C.
100
D.
60
Ans:
100
Explanation :
The normal range of concentration of fasting blood sugar is 80 to 120 mg/ml; in the testing of true blood sugar, the normal range of concentration is 70 to 100 mg/ml. So normal glucose levels fall between 70 and 150 mg. Higher levels may indicate diseases such as diabetes mellitus.
[13] Entomology is the study of -
A.
Birds
B.
Insects
C.
Fossils
D.
Fungi
Ans:
Insects
Explanation :
Entomology is the scientific study of insects, a branch of arthropodology. which in turn is a branch of biology. It is derived from Lhe Greek word `atomos' which means "that which is cut in pieces or engraved/ segmented", hence "insect".
[14] Exobiology is a science that deals with -
A.
extinct forms
B.
life in other planets
C.
life in the outer space
D.
life in marine habitat
Ans:
life in the outer space
Explanation :
Exobiology is the branch of biology that deals with the search for extraterrestrial life and the effects of extraterrestrial surroundings or outer space on living organisms.
[15] Which of the following fuels causes minimum environmental pollution?
A.
Diesel
B.
Kerosene
C.
Hydrogen
D.
Coal
Ans:
Hydrogen
Explanation :
Most of environmental (air) pollution results from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power. All these produce harmful CO2 or its variants. On the contrary, when hydrogen burns in air, it produces nothing but water vapor. It is therefore the cleanest possible as it doesn’t produce CO2.
[16] Name the organ where the embryo develops -
A.
Uterus
B.
Fallopian tube
C.
Ureter
D.
Cervix
Ans:
Ureter
Explanation :
Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid filled membranes. The embryo develops within the amniotic sac, under the lining of the uterus on one side. This stage is characterized by the formation of most internal organs and external body structures. Most organs begin to form about 3 weeks after fertilization, which equals 5 weeks of pregnancy.
[17] Which of the following organelle is responsible for synthesizing of proteins in the cell?
A.
Golgi apparatus
B.
Ribosome
C.
Lysosome
D.
Nucleus
Ans:
Ribosome
Explanation :
The Ribosome, a complex molecule made of ribosomal RNA molecules, is responsible for protein synthesis in the cells.
[18] Plants get water through the roots because of —
A.
elasticity
B.
capillarity
C.
viscosity
D.
photosynthesis
Ans:
capillarity
Explanation :
Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant (through the network of xylem vessels) through a combination of capillary action and "transiprational pull." Water moves through the plant by means of capillary action.
[19] The central control of respiratory activity in human body is exercised by -
A.
cerebrum
B.
cerebellum
C.
medulla oblongata
D.
hypothalamus
Ans:
medulla oblongata
Explanation :
The medulla oblongata is a portion of the hindbrain that controls autonomic functions such as breathing, digestion, heart and blood vessel function, swallowing and sneezing. Motor and sensory neurons from the midbrain and forebrain travel through the medulla. As a part of the brainstem, the medulla oblongata helps in the transferring of messages between various parts of the brain and the spinal cord.
[20] The biological decomposition of organic substances in wastes under controlled conditions known as -
A.
composting
B.
incineration
C.
sanitary landfill
D.
pyrolysis
Ans:
composting
Explanation :
0
[21] Human bone does not contain -
A.
calcium
B.
carbon
C.
oxygen
D.
phosphorous
Ans:
oxygen
Explanation :
Human bone contains calcium, carbon, phosphorous. Bones are made of connective tissue reinforced with calcium and specialized bone cells. Most bones also contain bone marrow, where blood cells are made.
[22] Birds usually have a single -
A.
Kidney
B.
Lung
C.
Testis
D.
Ovary
Ans:
Ovary
Explanation :
Female birds in most families have only one functional ovary (the left one), connected to an oviduct — although two ovaries are present in the embryonic stage of each female bird.
[23] Alfalfa is the name of a kind of -
A.
Forest
B.
Crop
C.
Grass
D.
None of these
Ans:
Crop
Explanation :
Alfalfa is a small seeded crop, and has a slowly-growing seedling, but after several months of establishment, forms a tough 'crown' at the top of the root system. This crown contains many shoot buds that enables alfalfa to re-grow many times after being grazed or harvested. Alfalfa is widely grown throughout the world as forage for cattle.
[24] The protein present in the finger nail is -
A.
Actin
B.
Myosin
C.
Globin
D.
Keratin
Ans:
Keratin
Explanation :
Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.
[25] 'Comose’ seeds are seeds with -
A.
Long hairs
B.
Wings
C.
Bristles
D.
Hooks
Ans:
Long hairs
Explanation :
The word ‘comose’ means ‘hairy’ in Latin. It refers to certain seeds (such as cotton) having a tuft or tufts of hair. The seeds of plants like Calotropis, Gossypium, etc, possess a large number of hairs which enable them to float in air. Such seeds are described as comose.
Explanation :
Lactose is a type of sugar, naturally found in milk and dairy products. In the intestine, lactose is transformed by lactase, an enzyme, into glucose and galactose, both simpler sugars, which are used by our body for energy and various functions. Most people have difficulty digesting lactose.
[6] The colour of cow's milk is slightly yellow due to the presence of -
A.
xanthophyll
B.
riboflavin
C.
ribulose
D.
carotin
Ans:
carotin
Explanation :
Carotene mostly affects the colour of fat. Since milk is comprised of around 3.5% milk fat, a dairy cow that is grass-fed tends to produce yellow milk, over a dairy cow that is not grass-fed and fed primarily a mix of hay, silage and grain.
[7] Which one of these is a communicable disease?
A.
Diabetes
B.
Diphtheria
C.
Arthritis
D.
Cancer
Ans:
Diphtheria
Explanation :
Diphtheria is an acute an upper respiratory tract illness and infectious disease caused by the bacteria Corynebacterium diphtheriae. It is spread by direct physical contact or breathing the aerosolized secretions of infected individuals.
[8] Which one of the following is a hereditary disease?
A.
Haemophilia
B.
Myopia
C.
Anaemia
D.
Leukemia
Ans:
Haemophilia
Explanation :
Hemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken. It has been associated with royal families due to inbreeding, and is sometimes called the 'Royal Disease.'
[9] What is the Normal Blood Volume in human adult?
A.
One litre
B.
Three litres
C.
Five litres
D.
Seven litres
Ans:
Five litres
Explanation :
The average adult has a blood volume of roughly 5 liters, which is composed of plasma and several kinds of cells. By volume, the red blood cells constitute about 45% of whole blood, the plasma about 54.3%, and white cells about 0.7%.
[10] Which of the following has no blood, but respires?
A.
Fish
B.
Earthworm
C.
Hydra
D.
Cockroach
Ans:
Hydra
Explanation :
In animals, three main types of respiratory systems exist: respiration through the skin, respiration through the gills or respiration through internal air structures. Respiration through the skin, as in the Hydra, involves the passing of molecules into and out of the body via diffusion. Aquatic animals use gills, which are structures composed of tissues and blood vessels that extend from the body, for their respiration needs. Most terrestrial animals use internal air structures, such as lungs or tracheae, to respire. Cockroach, snail and earthworm has blood.
[11] Organisms that generate energy using light are known as -
A.
Chaemolithotrophs
B.
Oligotrophs
C.
Bacteria
D.
Photoautotrophs
Ans:
Photoautotrophs
Explanation :
0
[12] The fasting blood glucose level in adults in mg/100 ml is -
A.
200
B.
160
C.
100
D.
60
Ans:
100
Explanation :
The normal range of concentration of fasting blood sugar is 80 to 120 mg/ml; in the testing of true blood sugar, the normal range of concentration is 70 to 100 mg/ml. So normal glucose levels fall between 70 and 150 mg. Higher levels may indicate diseases such as diabetes mellitus.
[13] Entomology is the study of -
A.
Birds
B.
Insects
C.
Fossils
D.
Fungi
Ans:
Insects
Explanation :
Entomology is the scientific study of insects, a branch of arthropodology. which in turn is a branch of biology. It is derived from Lhe Greek word `atomos' which means "that which is cut in pieces or engraved/ segmented", hence "insect".
[14] Exobiology is a science that deals with -
A.
extinct forms
B.
life in other planets
C.
life in the outer space
D.
life in marine habitat
Ans:
life in the outer space
Explanation :
Exobiology is the branch of biology that deals with the search for extraterrestrial life and the effects of extraterrestrial surroundings or outer space on living organisms.
[15] Which of the following fuels causes minimum environmental pollution?
A.
Diesel
B.
Kerosene
C.
Hydrogen
D.
Coal
Ans:
Hydrogen
Explanation :
Most of environmental (air) pollution results from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power. All these produce harmful CO2 or its variants. On the contrary, when hydrogen burns in air, it produces nothing but water vapor. It is therefore the cleanest possible as it doesn’t produce CO2.
[16] Name the organ where the embryo develops -
A.
Uterus
B.
Fallopian tube
C.
Ureter
D.
Cervix
Ans:
Ureter
Explanation :
Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid filled membranes. The embryo develops within the amniotic sac, under the lining of the uterus on one side. This stage is characterized by the formation of most internal organs and external body structures. Most organs begin to form about 3 weeks after fertilization, which equals 5 weeks of pregnancy.
[17] Which of the following organelle is responsible for synthesizing of proteins in the cell?
A.
Golgi apparatus
B.
Ribosome
C.
Lysosome
D.
Nucleus
Ans:
Ribosome
Explanation :
The Ribosome, a complex molecule made of ribosomal RNA molecules, is responsible for protein synthesis in the cells.
[18] Plants get water through the roots because of —
A.
elasticity
B.
capillarity
C.
viscosity
D.
photosynthesis
Ans:
capillarity
Explanation :
Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant (through the network of xylem vessels) through a combination of capillary action and "transiprational pull." Water moves through the plant by means of capillary action.
[19] The central control of respiratory activity in human body is exercised by -
A.
cerebrum
B.
cerebellum
C.
medulla oblongata
D.
hypothalamus
Ans:
medulla oblongata
Explanation :
The medulla oblongata is a portion of the hindbrain that controls autonomic functions such as breathing, digestion, heart and blood vessel function, swallowing and sneezing. Motor and sensory neurons from the midbrain and forebrain travel through the medulla. As a part of the brainstem, the medulla oblongata helps in the transferring of messages between various parts of the brain and the spinal cord.
[20] The biological decomposition of organic substances in wastes under controlled conditions known as -
A.
composting
B.
incineration
C.
sanitary landfill
D.
pyrolysis
Ans:
composting
Explanation :
0
[21] Human bone does not contain -
A.
calcium
B.
carbon
C.
oxygen
D.
phosphorous
Ans:
oxygen
Explanation :
Human bone contains calcium, carbon, phosphorous. Bones are made of connective tissue reinforced with calcium and specialized bone cells. Most bones also contain bone marrow, where blood cells are made.
[22] Birds usually have a single -
A.
Kidney
B.
Lung
C.
Testis
D.
Ovary
Ans:
Ovary
Explanation :
Female birds in most families have only one functional ovary (the left one), connected to an oviduct — although two ovaries are present in the embryonic stage of each female bird.
[23] Alfalfa is the name of a kind of -
A.
Forest
B.
Crop
C.
Grass
D.
None of these
Ans:
Crop
Explanation :
Alfalfa is a small seeded crop, and has a slowly-growing seedling, but after several months of establishment, forms a tough 'crown' at the top of the root system. This crown contains many shoot buds that enables alfalfa to re-grow many times after being grazed or harvested. Alfalfa is widely grown throughout the world as forage for cattle.
[24] The protein present in the finger nail is -
A.
Actin
B.
Myosin
C.
Globin
D.
Keratin
Ans:
Keratin
Explanation :
Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.
[25] 'Comose’ seeds are seeds with -
A.
Long hairs
B.
Wings
C.
Bristles
D.
Hooks
Ans:
Long hairs
Explanation :
The word ‘comose’ means ‘hairy’ in Latin. It refers to certain seeds (such as cotton) having a tuft or tufts of hair. The seeds of plants like Calotropis, Gossypium, etc, possess a large number of hairs which enable them to float in air. Such seeds are described as comose.
Explanation :
Diphtheria is an acute an upper respiratory tract illness and infectious disease caused by the bacteria Corynebacterium diphtheriae. It is spread by direct physical contact or breathing the aerosolized secretions of infected individuals.
[8] Which one of the following is a hereditary disease?
A.
Haemophilia
B.
Myopia
C.
Anaemia
D.
Leukemia
Ans:
Haemophilia
Explanation :
Hemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken. It has been associated with royal families due to inbreeding, and is sometimes called the 'Royal Disease.'
[9] What is the Normal Blood Volume in human adult?
A.
One litre
B.
Three litres
C.
Five litres
D.
Seven litres
Ans:
Five litres
Explanation :
The average adult has a blood volume of roughly 5 liters, which is composed of plasma and several kinds of cells. By volume, the red blood cells constitute about 45% of whole blood, the plasma about 54.3%, and white cells about 0.7%.
[10] Which of the following has no blood, but respires?
A.
Fish
B.
Earthworm
C.
Hydra
D.
Cockroach
Ans:
Hydra
Explanation :
In animals, three main types of respiratory systems exist: respiration through the skin, respiration through the gills or respiration through internal air structures. Respiration through the skin, as in the Hydra, involves the passing of molecules into and out of the body via diffusion. Aquatic animals use gills, which are structures composed of tissues and blood vessels that extend from the body, for their respiration needs. Most terrestrial animals use internal air structures, such as lungs or tracheae, to respire. Cockroach, snail and earthworm has blood.
[11] Organisms that generate energy using light are known as -
A.
Chaemolithotrophs
B.
Oligotrophs
C.
Bacteria
D.
Photoautotrophs
Ans:
Photoautotrophs
Explanation :
0
[12] The fasting blood glucose level in adults in mg/100 ml is -
A.
200
B.
160
C.
100
D.
60
Ans:
100
Explanation :
The normal range of concentration of fasting blood sugar is 80 to 120 mg/ml; in the testing of true blood sugar, the normal range of concentration is 70 to 100 mg/ml. So normal glucose levels fall between 70 and 150 mg. Higher levels may indicate diseases such as diabetes mellitus.
[13] Entomology is the study of -
A.
Birds
B.
Insects
C.
Fossils
D.
Fungi
Ans:
Insects
Explanation :
Entomology is the scientific study of insects, a branch of arthropodology. which in turn is a branch of biology. It is derived from Lhe Greek word `atomos' which means "that which is cut in pieces or engraved/ segmented", hence "insect".
[14] Exobiology is a science that deals with -
A.
extinct forms
B.
life in other planets
C.
life in the outer space
D.
life in marine habitat
Ans:
life in the outer space
Explanation :
Exobiology is the branch of biology that deals with the search for extraterrestrial life and the effects of extraterrestrial surroundings or outer space on living organisms.
[15] Which of the following fuels causes minimum environmental pollution?
A.
Diesel
B.
Kerosene
C.
Hydrogen
D.
Coal
Ans:
Hydrogen
Explanation :
Most of environmental (air) pollution results from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power. All these produce harmful CO2 or its variants. On the contrary, when hydrogen burns in air, it produces nothing but water vapor. It is therefore the cleanest possible as it doesn’t produce CO2.
[16] Name the organ where the embryo develops -
A.
Uterus
B.
Fallopian tube
C.
Ureter
D.
Cervix
Ans:
Ureter
Explanation :
Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid filled membranes. The embryo develops within the amniotic sac, under the lining of the uterus on one side. This stage is characterized by the formation of most internal organs and external body structures. Most organs begin to form about 3 weeks after fertilization, which equals 5 weeks of pregnancy.
[17] Which of the following organelle is responsible for synthesizing of proteins in the cell?
A.
Golgi apparatus
B.
Ribosome
C.
Lysosome
D.
Nucleus
Ans:
Ribosome
Explanation :
The Ribosome, a complex molecule made of ribosomal RNA molecules, is responsible for protein synthesis in the cells.
[18] Plants get water through the roots because of —
A.
elasticity
B.
capillarity
C.
viscosity
D.
photosynthesis
Ans:
capillarity
Explanation :
Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant (through the network of xylem vessels) through a combination of capillary action and "transiprational pull." Water moves through the plant by means of capillary action.
[19] The central control of respiratory activity in human body is exercised by -
A.
cerebrum
B.
cerebellum
C.
medulla oblongata
D.
hypothalamus
Ans:
medulla oblongata
Explanation :
The medulla oblongata is a portion of the hindbrain that controls autonomic functions such as breathing, digestion, heart and blood vessel function, swallowing and sneezing. Motor and sensory neurons from the midbrain and forebrain travel through the medulla. As a part of the brainstem, the medulla oblongata helps in the transferring of messages between various parts of the brain and the spinal cord.
[20] The biological decomposition of organic substances in wastes under controlled conditions known as -
A.
composting
B.
incineration
C.
sanitary landfill
D.
pyrolysis
Ans:
composting
Explanation :
0
[21] Human bone does not contain -
A.
calcium
B.
carbon
C.
oxygen
D.
phosphorous
Ans:
oxygen
Explanation :
Human bone contains calcium, carbon, phosphorous. Bones are made of connective tissue reinforced with calcium and specialized bone cells. Most bones also contain bone marrow, where blood cells are made.
[22] Birds usually have a single -
A.
Kidney
B.
Lung
C.
Testis
D.
Ovary
Ans:
Ovary
Explanation :
Female birds in most families have only one functional ovary (the left one), connected to an oviduct — although two ovaries are present in the embryonic stage of each female bird.
[23] Alfalfa is the name of a kind of -
A.
Forest
B.
Crop
C.
Grass
D.
None of these
Ans:
Crop
Explanation :
Alfalfa is a small seeded crop, and has a slowly-growing seedling, but after several months of establishment, forms a tough 'crown' at the top of the root system. This crown contains many shoot buds that enables alfalfa to re-grow many times after being grazed or harvested. Alfalfa is widely grown throughout the world as forage for cattle.
[24] The protein present in the finger nail is -
A.
Actin
B.
Myosin
C.
Globin
D.
Keratin
Ans:
Keratin
Explanation :
Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.
[25] 'Comose’ seeds are seeds with -
A.
Long hairs
B.
Wings
C.
Bristles
D.
Hooks
Ans:
Long hairs
Explanation :
The word ‘comose’ means ‘hairy’ in Latin. It refers to certain seeds (such as cotton) having a tuft or tufts of hair. The seeds of plants like Calotropis, Gossypium, etc, possess a large number of hairs which enable them to float in air. Such seeds are described as comose.
Explanation :
The average adult has a blood volume of roughly 5 liters, which is composed of plasma and several kinds of cells. By volume, the red blood cells constitute about 45% of whole blood, the plasma about 54.3%, and white cells about 0.7%.
[10] Which of the following has no blood, but respires?
A.
Fish
B.
Earthworm
C.
Hydra
D.
Cockroach
Ans:
Hydra
Explanation :
In animals, three main types of respiratory systems exist: respiration through the skin, respiration through the gills or respiration through internal air structures. Respiration through the skin, as in the Hydra, involves the passing of molecules into and out of the body via diffusion. Aquatic animals use gills, which are structures composed of tissues and blood vessels that extend from the body, for their respiration needs. Most terrestrial animals use internal air structures, such as lungs or tracheae, to respire. Cockroach, snail and earthworm has blood.
[11] Organisms that generate energy using light are known as -
A.
Chaemolithotrophs
B.
Oligotrophs
C.
Bacteria
D.
Photoautotrophs
Ans:
Photoautotrophs
Explanation :
0
[12] The fasting blood glucose level in adults in mg/100 ml is -
A.
200
B.
160
C.
100
D.
60
Ans:
100
Explanation :
The normal range of concentration of fasting blood sugar is 80 to 120 mg/ml; in the testing of true blood sugar, the normal range of concentration is 70 to 100 mg/ml. So normal glucose levels fall between 70 and 150 mg. Higher levels may indicate diseases such as diabetes mellitus.
[13] Entomology is the study of -
A.
Birds
B.
Insects
C.
Fossils
D.
Fungi
Ans:
Insects
Explanation :
Entomology is the scientific study of insects, a branch of arthropodology. which in turn is a branch of biology. It is derived from Lhe Greek word `atomos' which means "that which is cut in pieces or engraved/ segmented", hence "insect".
[14] Exobiology is a science that deals with -
A.
extinct forms
B.
life in other planets
C.
life in the outer space
D.
life in marine habitat
Ans:
life in the outer space
Explanation :
Exobiology is the branch of biology that deals with the search for extraterrestrial life and the effects of extraterrestrial surroundings or outer space on living organisms.
[15] Which of the following fuels causes minimum environmental pollution?
A.
Diesel
B.
Kerosene
C.
Hydrogen
D.
Coal
Ans:
Hydrogen
Explanation :
Most of environmental (air) pollution results from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power. All these produce harmful CO2 or its variants. On the contrary, when hydrogen burns in air, it produces nothing but water vapor. It is therefore the cleanest possible as it doesn’t produce CO2.
[16] Name the organ where the embryo develops -
A.
Uterus
B.
Fallopian tube
C.
Ureter
D.
Cervix
Ans:
Ureter
Explanation :
Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid filled membranes. The embryo develops within the amniotic sac, under the lining of the uterus on one side. This stage is characterized by the formation of most internal organs and external body structures. Most organs begin to form about 3 weeks after fertilization, which equals 5 weeks of pregnancy.
[17] Which of the following organelle is responsible for synthesizing of proteins in the cell?
A.
Golgi apparatus
B.
Ribosome
C.
Lysosome
D.
Nucleus
Ans:
Ribosome
Explanation :
The Ribosome, a complex molecule made of ribosomal RNA molecules, is responsible for protein synthesis in the cells.
[18] Plants get water through the roots because of —
A.
elasticity
B.
capillarity
C.
viscosity
D.
photosynthesis
Ans:
capillarity
Explanation :
Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant (through the network of xylem vessels) through a combination of capillary action and "transiprational pull." Water moves through the plant by means of capillary action.
[19] The central control of respiratory activity in human body is exercised by -
A.
cerebrum
B.
cerebellum
C.
medulla oblongata
D.
hypothalamus
Ans:
medulla oblongata
Explanation :
The medulla oblongata is a portion of the hindbrain that controls autonomic functions such as breathing, digestion, heart and blood vessel function, swallowing and sneezing. Motor and sensory neurons from the midbrain and forebrain travel through the medulla. As a part of the brainstem, the medulla oblongata helps in the transferring of messages between various parts of the brain and the spinal cord.
[20] The biological decomposition of organic substances in wastes under controlled conditions known as -
A.
composting
B.
incineration
C.
sanitary landfill
D.
pyrolysis
Ans:
composting
Explanation :
0
[21] Human bone does not contain -
A.
calcium
B.
carbon
C.
oxygen
D.
phosphorous
Ans:
oxygen
Explanation :
Human bone contains calcium, carbon, phosphorous. Bones are made of connective tissue reinforced with calcium and specialized bone cells. Most bones also contain bone marrow, where blood cells are made.
[22] Birds usually have a single -
A.
Kidney
B.
Lung
C.
Testis
D.
Ovary
Ans:
Ovary
Explanation :
Female birds in most families have only one functional ovary (the left one), connected to an oviduct — although two ovaries are present in the embryonic stage of each female bird.
[23] Alfalfa is the name of a kind of -
A.
Forest
B.
Crop
C.
Grass
D.
None of these
Ans:
Crop
Explanation :
Alfalfa is a small seeded crop, and has a slowly-growing seedling, but after several months of establishment, forms a tough 'crown' at the top of the root system. This crown contains many shoot buds that enables alfalfa to re-grow many times after being grazed or harvested. Alfalfa is widely grown throughout the world as forage for cattle.
[24] The protein present in the finger nail is -
A.
Actin
B.
Myosin
C.
Globin
D.
Keratin
Ans:
Keratin
Explanation :
Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.
[25] 'Comose’ seeds are seeds with -
A.
Long hairs
B.
Wings
C.
Bristles
D.
Hooks
Ans:
Long hairs
Explanation :
The word ‘comose’ means ‘hairy’ in Latin. It refers to certain seeds (such as cotton) having a tuft or tufts of hair. The seeds of plants like Calotropis, Gossypium, etc, possess a large number of hairs which enable them to float in air. Such seeds are described as comose.
Explanation :
0
[12] The fasting blood glucose level in adults in mg/100 ml is -
A.
200
B.
160
C.
100
D.
60
Ans:
100
Explanation :
The normal range of concentration of fasting blood sugar is 80 to 120 mg/ml; in the testing of true blood sugar, the normal range of concentration is 70 to 100 mg/ml. So normal glucose levels fall between 70 and 150 mg. Higher levels may indicate diseases such as diabetes mellitus.
[13] Entomology is the study of -
A.
Birds
B.
Insects
C.
Fossils
D.
Fungi
Ans:
Insects
Explanation :
Entomology is the scientific study of insects, a branch of arthropodology. which in turn is a branch of biology. It is derived from Lhe Greek word `atomos' which means "that which is cut in pieces or engraved/ segmented", hence "insect".
[14] Exobiology is a science that deals with -
A.
extinct forms
B.
life in other planets
C.
life in the outer space
D.
life in marine habitat
Ans:
life in the outer space
Explanation :
Exobiology is the branch of biology that deals with the search for extraterrestrial life and the effects of extraterrestrial surroundings or outer space on living organisms.
[15] Which of the following fuels causes minimum environmental pollution?
A.
Diesel
B.
Kerosene
C.
Hydrogen
D.
Coal
Ans:
Hydrogen
Explanation :
Most of environmental (air) pollution results from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power. All these produce harmful CO2 or its variants. On the contrary, when hydrogen burns in air, it produces nothing but water vapor. It is therefore the cleanest possible as it doesn’t produce CO2.
[16] Name the organ where the embryo develops -
A.
Uterus
B.
Fallopian tube
C.
Ureter
D.
Cervix
Ans:
Ureter
Explanation :
Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid filled membranes. The embryo develops within the amniotic sac, under the lining of the uterus on one side. This stage is characterized by the formation of most internal organs and external body structures. Most organs begin to form about 3 weeks after fertilization, which equals 5 weeks of pregnancy.
[17] Which of the following organelle is responsible for synthesizing of proteins in the cell?
A.
Golgi apparatus
B.
Ribosome
C.
Lysosome
D.
Nucleus
Ans:
Ribosome
Explanation :
The Ribosome, a complex molecule made of ribosomal RNA molecules, is responsible for protein synthesis in the cells.
[18] Plants get water through the roots because of —
A.
elasticity
B.
capillarity
C.
viscosity
D.
photosynthesis
Ans:
capillarity
Explanation :
Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant (through the network of xylem vessels) through a combination of capillary action and "transiprational pull." Water moves through the plant by means of capillary action.
[19] The central control of respiratory activity in human body is exercised by -
A.
cerebrum
B.
cerebellum
C.
medulla oblongata
D.
hypothalamus
Ans:
medulla oblongata
Explanation :
The medulla oblongata is a portion of the hindbrain that controls autonomic functions such as breathing, digestion, heart and blood vessel function, swallowing and sneezing. Motor and sensory neurons from the midbrain and forebrain travel through the medulla. As a part of the brainstem, the medulla oblongata helps in the transferring of messages between various parts of the brain and the spinal cord.
[20] The biological decomposition of organic substances in wastes under controlled conditions known as -
A.
composting
B.
incineration
C.
sanitary landfill
D.
pyrolysis
Ans:
composting
Explanation :
0
[21] Human bone does not contain -
A.
calcium
B.
carbon
C.
oxygen
D.
phosphorous
Ans:
oxygen
Explanation :
Human bone contains calcium, carbon, phosphorous. Bones are made of connective tissue reinforced with calcium and specialized bone cells. Most bones also contain bone marrow, where blood cells are made.
[22] Birds usually have a single -
A.
Kidney
B.
Lung
C.
Testis
D.
Ovary
Ans:
Ovary
Explanation :
Female birds in most families have only one functional ovary (the left one), connected to an oviduct — although two ovaries are present in the embryonic stage of each female bird.
[23] Alfalfa is the name of a kind of -
A.
Forest
B.
Crop
C.
Grass
D.
None of these
Ans:
Crop
Explanation :
Alfalfa is a small seeded crop, and has a slowly-growing seedling, but after several months of establishment, forms a tough 'crown' at the top of the root system. This crown contains many shoot buds that enables alfalfa to re-grow many times after being grazed or harvested. Alfalfa is widely grown throughout the world as forage for cattle.
[24] The protein present in the finger nail is -
A.
Actin
B.
Myosin
C.
Globin
D.
Keratin
Ans:
Keratin
Explanation :
Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.
[25] 'Comose’ seeds are seeds with -
A.
Long hairs
B.
Wings
C.
Bristles
D.
Hooks
Ans:
Long hairs
Explanation :
The word ‘comose’ means ‘hairy’ in Latin. It refers to certain seeds (such as cotton) having a tuft or tufts of hair. The seeds of plants like Calotropis, Gossypium, etc, possess a large number of hairs which enable them to float in air. Such seeds are described as comose.
Explanation :
Entomology is the scientific study of insects, a branch of arthropodology. which in turn is a branch of biology. It is derived from Lhe Greek word `atomos' which means "that which is cut in pieces or engraved/ segmented", hence "insect".
[14] Exobiology is a science that deals with -
A.
extinct forms
B.
life in other planets
C.
life in the outer space
D.
life in marine habitat
Ans:
life in the outer space
Explanation :
Exobiology is the branch of biology that deals with the search for extraterrestrial life and the effects of extraterrestrial surroundings or outer space on living organisms.
[15] Which of the following fuels causes minimum environmental pollution?
A.
Diesel
B.
Kerosene
C.
Hydrogen
D.
Coal
Ans:
Hydrogen
Explanation :
Most of environmental (air) pollution results from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power. All these produce harmful CO2 or its variants. On the contrary, when hydrogen burns in air, it produces nothing but water vapor. It is therefore the cleanest possible as it doesn’t produce CO2.
[16] Name the organ where the embryo develops -
A.
Uterus
B.
Fallopian tube
C.
Ureter
D.
Cervix
Ans:
Ureter
Explanation :
Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid filled membranes. The embryo develops within the amniotic sac, under the lining of the uterus on one side. This stage is characterized by the formation of most internal organs and external body structures. Most organs begin to form about 3 weeks after fertilization, which equals 5 weeks of pregnancy.
[17] Which of the following organelle is responsible for synthesizing of proteins in the cell?
A.
Golgi apparatus
B.
Ribosome
C.
Lysosome
D.
Nucleus
Ans:
Ribosome
Explanation :
The Ribosome, a complex molecule made of ribosomal RNA molecules, is responsible for protein synthesis in the cells.
[18] Plants get water through the roots because of —
A.
elasticity
B.
capillarity
C.
viscosity
D.
photosynthesis
Ans:
capillarity
Explanation :
Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant (through the network of xylem vessels) through a combination of capillary action and "transiprational pull." Water moves through the plant by means of capillary action.
[19] The central control of respiratory activity in human body is exercised by -
A.
cerebrum
B.
cerebellum
C.
medulla oblongata
D.
hypothalamus
Ans:
medulla oblongata
Explanation :
The medulla oblongata is a portion of the hindbrain that controls autonomic functions such as breathing, digestion, heart and blood vessel function, swallowing and sneezing. Motor and sensory neurons from the midbrain and forebrain travel through the medulla. As a part of the brainstem, the medulla oblongata helps in the transferring of messages between various parts of the brain and the spinal cord.
[20] The biological decomposition of organic substances in wastes under controlled conditions known as -
A.
composting
B.
incineration
C.
sanitary landfill
D.
pyrolysis
Ans:
composting
Explanation :
0
[21] Human bone does not contain -
A.
calcium
B.
carbon
C.
oxygen
D.
phosphorous
Ans:
oxygen
Explanation :
Human bone contains calcium, carbon, phosphorous. Bones are made of connective tissue reinforced with calcium and specialized bone cells. Most bones also contain bone marrow, where blood cells are made.
[22] Birds usually have a single -
A.
Kidney
B.
Lung
C.
Testis
D.
Ovary
Ans:
Ovary
Explanation :
Female birds in most families have only one functional ovary (the left one), connected to an oviduct — although two ovaries are present in the embryonic stage of each female bird.
[23] Alfalfa is the name of a kind of -
A.
Forest
B.
Crop
C.
Grass
D.
None of these
Ans:
Crop
Explanation :
Alfalfa is a small seeded crop, and has a slowly-growing seedling, but after several months of establishment, forms a tough 'crown' at the top of the root system. This crown contains many shoot buds that enables alfalfa to re-grow many times after being grazed or harvested. Alfalfa is widely grown throughout the world as forage for cattle.
[24] The protein present in the finger nail is -
A.
Actin
B.
Myosin
C.
Globin
D.
Keratin
Ans:
Keratin
Explanation :
Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.
[25] 'Comose’ seeds are seeds with -
A.
Long hairs
B.
Wings
C.
Bristles
D.
Hooks
Ans:
Long hairs
Explanation :
The word ‘comose’ means ‘hairy’ in Latin. It refers to certain seeds (such as cotton) having a tuft or tufts of hair. The seeds of plants like Calotropis, Gossypium, etc, possess a large number of hairs which enable them to float in air. Such seeds are described as comose.
Explanation :
Most of environmental (air) pollution results from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power. All these produce harmful CO2 or its variants. On the contrary, when hydrogen burns in air, it produces nothing but water vapor. It is therefore the cleanest possible as it doesn’t produce CO2.
[16] Name the organ where the embryo develops -
A.
Uterus
B.
Fallopian tube
C.
Ureter
D.
Cervix
Ans:
Ureter
Explanation :
Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid filled membranes. The embryo develops within the amniotic sac, under the lining of the uterus on one side. This stage is characterized by the formation of most internal organs and external body structures. Most organs begin to form about 3 weeks after fertilization, which equals 5 weeks of pregnancy.
[17] Which of the following organelle is responsible for synthesizing of proteins in the cell?
A.
Golgi apparatus
B.
Ribosome
C.
Lysosome
D.
Nucleus
Ans:
Ribosome
Explanation :
The Ribosome, a complex molecule made of ribosomal RNA molecules, is responsible for protein synthesis in the cells.
[18] Plants get water through the roots because of —
A.
elasticity
B.
capillarity
C.
viscosity
D.
photosynthesis
Ans:
capillarity
Explanation :
Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant (through the network of xylem vessels) through a combination of capillary action and "transiprational pull." Water moves through the plant by means of capillary action.
[19] The central control of respiratory activity in human body is exercised by -
A.
cerebrum
B.
cerebellum
C.
medulla oblongata
D.
hypothalamus
Ans:
medulla oblongata
Explanation :
The medulla oblongata is a portion of the hindbrain that controls autonomic functions such as breathing, digestion, heart and blood vessel function, swallowing and sneezing. Motor and sensory neurons from the midbrain and forebrain travel through the medulla. As a part of the brainstem, the medulla oblongata helps in the transferring of messages between various parts of the brain and the spinal cord.
[20] The biological decomposition of organic substances in wastes under controlled conditions known as -
A.
composting
B.
incineration
C.
sanitary landfill
D.
pyrolysis
Ans:
composting
Explanation :
0
[21] Human bone does not contain -
A.
calcium
B.
carbon
C.
oxygen
D.
phosphorous
Ans:
oxygen
Explanation :
Human bone contains calcium, carbon, phosphorous. Bones are made of connective tissue reinforced with calcium and specialized bone cells. Most bones also contain bone marrow, where blood cells are made.
[22] Birds usually have a single -
A.
Kidney
B.
Lung
C.
Testis
D.
Ovary
Ans:
Ovary
Explanation :
Female birds in most families have only one functional ovary (the left one), connected to an oviduct — although two ovaries are present in the embryonic stage of each female bird.
[23] Alfalfa is the name of a kind of -
A.
Forest
B.
Crop
C.
Grass
D.
None of these
Ans:
Crop
Explanation :
Alfalfa is a small seeded crop, and has a slowly-growing seedling, but after several months of establishment, forms a tough 'crown' at the top of the root system. This crown contains many shoot buds that enables alfalfa to re-grow many times after being grazed or harvested. Alfalfa is widely grown throughout the world as forage for cattle.
[24] The protein present in the finger nail is -
A.
Actin
B.
Myosin
C.
Globin
D.
Keratin
Ans:
Keratin
Explanation :
Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.
[25] 'Comose’ seeds are seeds with -
A.
Long hairs
B.
Wings
C.
Bristles
D.
Hooks
Ans:
Long hairs
Explanation :
The word ‘comose’ means ‘hairy’ in Latin. It refers to certain seeds (such as cotton) having a tuft or tufts of hair. The seeds of plants like Calotropis, Gossypium, etc, possess a large number of hairs which enable them to float in air. Such seeds are described as comose.
Explanation :
The Ribosome, a complex molecule made of ribosomal RNA molecules, is responsible for protein synthesis in the cells.
[18] Plants get water through the roots because of —
A.
elasticity
B.
capillarity
C.
viscosity
D.
photosynthesis
Ans:
capillarity
Explanation :
Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant (through the network of xylem vessels) through a combination of capillary action and "transiprational pull." Water moves through the plant by means of capillary action.
[19] The central control of respiratory activity in human body is exercised by -
A.
cerebrum
B.
cerebellum
C.
medulla oblongata
D.
hypothalamus
Ans:
medulla oblongata
Explanation :
The medulla oblongata is a portion of the hindbrain that controls autonomic functions such as breathing, digestion, heart and blood vessel function, swallowing and sneezing. Motor and sensory neurons from the midbrain and forebrain travel through the medulla. As a part of the brainstem, the medulla oblongata helps in the transferring of messages between various parts of the brain and the spinal cord.
[20] The biological decomposition of organic substances in wastes under controlled conditions known as -
A.
composting
B.
incineration
C.
sanitary landfill
D.
pyrolysis
Ans:
composting
Explanation :
0
[21] Human bone does not contain -
A.
calcium
B.
carbon
C.
oxygen
D.
phosphorous
Ans:
oxygen
Explanation :
Human bone contains calcium, carbon, phosphorous. Bones are made of connective tissue reinforced with calcium and specialized bone cells. Most bones also contain bone marrow, where blood cells are made.
[22] Birds usually have a single -
A.
Kidney
B.
Lung
C.
Testis
D.
Ovary
Ans:
Ovary
Explanation :
Female birds in most families have only one functional ovary (the left one), connected to an oviduct — although two ovaries are present in the embryonic stage of each female bird.
[23] Alfalfa is the name of a kind of -
A.
Forest
B.
Crop
C.
Grass
D.
None of these
Ans:
Crop
Explanation :
Alfalfa is a small seeded crop, and has a slowly-growing seedling, but after several months of establishment, forms a tough 'crown' at the top of the root system. This crown contains many shoot buds that enables alfalfa to re-grow many times after being grazed or harvested. Alfalfa is widely grown throughout the world as forage for cattle.
[24] The protein present in the finger nail is -
A.
Actin
B.
Myosin
C.
Globin
D.
Keratin
Ans:
Keratin
Explanation :
Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.
[25] 'Comose’ seeds are seeds with -
A.
Long hairs
B.
Wings
C.
Bristles
D.
Hooks
Ans:
Long hairs
Explanation :
The word ‘comose’ means ‘hairy’ in Latin. It refers to certain seeds (such as cotton) having a tuft or tufts of hair. The seeds of plants like Calotropis, Gossypium, etc, possess a large number of hairs which enable them to float in air. Such seeds are described as comose.
Explanation :
The medulla oblongata is a portion of the hindbrain that controls autonomic functions such as breathing, digestion, heart and blood vessel function, swallowing and sneezing. Motor and sensory neurons from the midbrain and forebrain travel through the medulla. As a part of the brainstem, the medulla oblongata helps in the transferring of messages between various parts of the brain and the spinal cord.
[20] The biological decomposition of organic substances in wastes under controlled conditions known as -
A.
composting
B.
incineration
C.
sanitary landfill
D.
pyrolysis
Ans:
composting
Explanation :
0
[21] Human bone does not contain -
A.
calcium
B.
carbon
C.
oxygen
D.
phosphorous
Ans:
oxygen
Explanation :
Human bone contains calcium, carbon, phosphorous. Bones are made of connective tissue reinforced with calcium and specialized bone cells. Most bones also contain bone marrow, where blood cells are made.
[22] Birds usually have a single -
A.
Kidney
B.
Lung
C.
Testis
D.
Ovary
Ans:
Ovary
Explanation :
Female birds in most families have only one functional ovary (the left one), connected to an oviduct — although two ovaries are present in the embryonic stage of each female bird.
[23] Alfalfa is the name of a kind of -
A.
Forest
B.
Crop
C.
Grass
D.
None of these
Ans:
Crop
Explanation :
Alfalfa is a small seeded crop, and has a slowly-growing seedling, but after several months of establishment, forms a tough 'crown' at the top of the root system. This crown contains many shoot buds that enables alfalfa to re-grow many times after being grazed or harvested. Alfalfa is widely grown throughout the world as forage for cattle.
[24] The protein present in the finger nail is -
A.
Actin
B.
Myosin
C.
Globin
D.
Keratin
Ans:
Keratin
Explanation :
Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.
[25] 'Comose’ seeds are seeds with -
A.
Long hairs
B.
Wings
C.
Bristles
D.
Hooks
Ans:
Long hairs
Explanation :
The word ‘comose’ means ‘hairy’ in Latin. It refers to certain seeds (such as cotton) having a tuft or tufts of hair. The seeds of plants like Calotropis, Gossypium, etc, possess a large number of hairs which enable them to float in air. Such seeds are described as comose.
Explanation :
Human bone contains calcium, carbon, phosphorous. Bones are made of connective tissue reinforced with calcium and specialized bone cells. Most bones also contain bone marrow, where blood cells are made.
[22] Birds usually have a single -
A.
Kidney
B.
Lung
C.
Testis
D.
Ovary
Ans:
Ovary
Explanation :
Female birds in most families have only one functional ovary (the left one), connected to an oviduct — although two ovaries are present in the embryonic stage of each female bird.
[23] Alfalfa is the name of a kind of -
A.
Forest
B.
Crop
C.
Grass
D.
None of these
Ans:
Crop
Explanation :
Alfalfa is a small seeded crop, and has a slowly-growing seedling, but after several months of establishment, forms a tough 'crown' at the top of the root system. This crown contains many shoot buds that enables alfalfa to re-grow many times after being grazed or harvested. Alfalfa is widely grown throughout the world as forage for cattle.
[24] The protein present in the finger nail is -
A.
Actin
B.
Myosin
C.
Globin
D.
Keratin
Ans:
Keratin
Explanation :
Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.
[25] 'Comose’ seeds are seeds with -
A.
Long hairs
B.
Wings
C.
Bristles
D.
Hooks
Ans:
Long hairs
Explanation :
The word ‘comose’ means ‘hairy’ in Latin. It refers to certain seeds (such as cotton) having a tuft or tufts of hair. The seeds of plants like Calotropis, Gossypium, etc, possess a large number of hairs which enable them to float in air. Such seeds are described as comose.
Explanation :
Alfalfa is a small seeded crop, and has a slowly-growing seedling, but after several months of establishment, forms a tough 'crown' at the top of the root system. This crown contains many shoot buds that enables alfalfa to re-grow many times after being grazed or harvested. Alfalfa is widely grown throughout the world as forage for cattle.
[24] The protein present in the finger nail is -
A.
Actin
B.
Myosin
C.
Globin
D.
Keratin
Ans:
Keratin
Explanation :
Keratin is a fibrous protein making up most cells found in our nails and hair and the epidermis layer of our skin. It also makes up fish scales and crustacean shells, bird feathers and beaks, and animal horns and hooves.
[25] 'Comose’ seeds are seeds with -
A.
Long hairs
B.
Wings
C.
Bristles
D.
Hooks
Ans:
Long hairs
Explanation :
The word ‘comose’ means ‘hairy’ in Latin. It refers to certain seeds (such as cotton) having a tuft or tufts of hair. The seeds of plants like Calotropis, Gossypium, etc, possess a large number of hairs which enable them to float in air. Such seeds are described as comose.
Explanation :
The word ‘comose’ means ‘hairy’ in Latin. It refers to certain seeds (such as cotton) having a tuft or tufts of hair. The seeds of plants like Calotropis, Gossypium, etc, possess a large number of hairs which enable them to float in air. Such seeds are described as comose.