[1] Vitamin C is also known as -
A.
Amino acid
B.
Ascorbic acid
C.
Acetic acid
D.
Azelaic acid
Ans:
Ascorbic acid
Explanation :
Ascorbic acid is a naturally occurring organic compound with antioxidant properties which is one form of Vitamin C. It dissolves well in water to give mildly acidic solutions. It is used to prevent and treat scurvy, a disease caused by a lack of vitamin C in the body
[2] The biological process in which both aerobes and anaerobes degrade organic matter is -
A.
Manuring
B.
Composting
C.
Digesting
D.
Nitrifying
Ans:
Composting
Explanation :
Composting is the decomposition of plant remains and other once-living materials to make an earthy, dark, crumbly substance that is excellent for enriching soil. It is the chief way to recycle wastes.
[3] The cuticle is absent in -
A.
Leaf
B.
Stem
C.
Root
D.
Fruit
Ans:
Leaf
Explanation :
The epidermis of the stem and the leaf is usually surrounded by a thin, covering called cuticle. It is formed by a waxy substance called cutin. It is meant for preventing excessive evaporation of water. Cuticle is absent in the root epidermis.
[4] Which of the following is not a mosquito borne disease?
A.
Dengue
B.
Malaria
C.
Sleeping sickness
D.
Filariasis
Ans:
Sleeping sickness
Explanation :
Sleeping sickness, also called African trypanosomiasis, disease caused by infection with the flagellate protozoan Trypanosoma brucei gambiense or the closely related subspecies T. brucei rhodesiense, transmitted by the tsetse fly (genus Glossina).
[5] Which is not a natural fibre?
A.
Linen
B.
Silk
C.
Jute
D.
Nylon
Ans:
Nylon
Explanation :
Jute is a long, soft, shiny vegetable fiber that can be spun into coarse, strong threads. "Nylon" is not a natural fibre. It is a synthetic fibre.
[6] Glucose is a type of -
A.
Pentose sugar
B.
Hexose sugar
C.
Tetrose sugar
D.
Diose sugar
Ans:
Hexose sugar
Explanation :
Three common sugars (glucose, galactose and fructose) share the same molecular formula: C6H12O6. Because of their six carbon atoms, each is a hexose. They are "single" sugars or monosaccharides.
[7] Number of mitochondria in bacterial cell is -
A.
one
B.
two
C.
many
D.
zero
Ans:
zero
Explanation :
Bacteria are prokaryotes, which, by definition, are cells that don't possess membrane-bound organelles. Mitochondria are membrane-bound organelles. Cellular respiration, in prokaryotes, occurs within the cytoplasm or inner surfaces of the cell.
[8] The maximum fixation of solar energy is done by -
A.
Protozoa
B.
Bacteria
C.
Fungi
D.
Green plants
Ans:
Green plants
Explanation :
The maximum 20% of the input of solar energy falling on leaves is converted into chemical energy by green plants. Green plants utilize solar energy and synthesize sugar from CO2 and water through the process of photosynthesis. However, they are able to utilize only 3% of the light energy that strikes on their green parts; the rest is dissipated as heat.
[9] Which one of the following chemicals is associated with muscle fatigue?
A.
Uric acid
B.
Acetic acid
C.
Pyruvic acid
D.
Lactic acid
Ans:
Lactic acid
Explanation :
Muscle fatigue refers to the decline in muscle force generated over sustained periods of activity. Intracellular acidosis due mainly to lactic acid accumulation has been regarded as the most important cause of skeletal muscle fatigue. Lactic acid accumulation leads to increased intracellular hydrogen ion (H+) concentration that leads to a weaker contraction.
[10] Which of the following is a form of sexual reproduction?
A.
Fragmentation
B.
Haemapheoditism
C.
Budding
D.
Fission
Ans:
Haemapheoditism
Explanation :
Hermaphroditism is a form of sexual reproduction. Hermaphrodite is an organism that has reproductive organs normally associated with both male and female sexes. Hermaphroditic plants—most flowering plants, or angiosperms—are bisexual. Hermaphroditic animals—mostly invertebrates such as worms, moss animals, trematodes, snails, slugs, etc—are usually parasitic, permanently attached to another animal or plant.
[11] The 'Red Data Book' is the documentation of endangered rare species of:
A.
Flora
B.
Fauna
C.
Other living organisms
D.
All of these are correct
Ans:
All of these are correct
Explanation :
A Red Data Book contains lists of species whose continued existence is threatened. Species are classified into different categories of perceived risk. It documents rare and endangered species of animals, plants and fungi, as well as other living organisms in an area, region or country.
[12] The parts of human body affected by Pyria are:
A.
eyes
B.
small intestine
C.
teeth and gums
D.
large intestine
Ans:
teeth and gums
Explanation :
Pyria, or periodontal disease, is a progressive gum disease characterized by inflammation resulting from the toxins found in plaque. It leads to bleeding of the gums. If allowed to progress, Pyria begins to destroy underlying tissue, which may eventually lead to tooth loss or infection in other areas of the body as the bacteria travels by bloodstream.
[13] What is the most basic criteria used to decide whether something is alive?
A.
Walking
B.
Breathing
C.
Molecular movements
D.
Life processes
Ans:
Life processes
Explanation :
Mostly, any kind of visible movement such as breathing, walking or growing is referred to decide if something is alive or not. But, a living organism may have movements not visible to the naked eye.
[14] Which of the following is known as ‘suicide bags of the cell’?
A.
Mitochondria
B.
Golgi Bodies
C.
Lysosomes
D.
Ribosomes
Ans:
Lysosomes
Explanation :
Lysosomes are a kind of waste disposal system of the cell. It contains digestive enzymes for almost all types of organic materials.
[15] The waste management technique that involves the use of microorganisms to remove or neutralize pollutants from contaminated site is called -
A.
Bio sensor
B.
Bio magnification
C.
Bio remediation
D.
Bio concentration
Ans:
Bio remediation
Explanation :
Bioremediation is a process used to treat contaminated media, including water, soil and subsurface material, by altering environmental conditions to stimulate growth of microorganisms and degrade the target pollutants.
[16] Who is known as the 'Father of Green Revolution' in India?
A.
G. Paul
B.
Norman Borlaug
C.
Van Neil
D.
Dr. Mithchell
Ans:
Norman Borlaug
Explanation :
Norman Borlaug, an American biologist and humanitarian, is globally known as the Father of Green Revolution for introducing techniques that contributed to the extensive increases in agricultural production. He is credited with saving over a billion people worldwide from starvation. M. S. Swaminathan is known as "Indian Father of Green Revolution" for his leadership in introducing and further developing high-yielding varieties of wheat in India.
[17] The specific role of Vitamin K is in the synthesis of -
A.
Albumin.
B.
Antibodies
C.
Globulin
D.
Prothrombin
Ans:
Prothrombin
Explanation :
Vitamin K is a necessary participant in synthesis of several proteins that mediate both coagulation and anticoagulation. It is noteworthy for the synthesis of Prothrombin (coagulation factor II) that forms thrombin in the clotting process. Vitamin K is integrally involved in the clotting mechanism of blood.
[18] Increased RBC's in the blood leads to a condition called -
A.
Anemia
B.
Haemophilia
C.
Polycythemia
D.
Leukaemia
Ans:
Polycythemia
Explanation :
Polycythemia is an abnormally high concentration of hemoglobin in the blood through an increase in red cell numbers. People with this condition have thicker blood, which makes it harder for blood to circulate around the body. A relatively stable number of RBCs is maintained in the circulation by increasing or decreasing the rate of production by the bone marrow.
[19] 'Mendel' is known as -
A.
Father of Physiology
B.
Father of Geology
C.
Father of Genetics
D.
Father of Biology
Ans:
Father of Biology
Explanation :
Gregor Mendal is known as the 'Father of modern genetics.' Through his pea plant experiments conducted between 1856 and 1863, he discovered the fundamental laws of inheritance.
[20] What makes a reptile a reptile?
A.
Cold blooded
B.
Warm Blooded
C.
Non-Hearing
D.
Egg-laying
Ans:
Egg-laying
Explanation :
Reptile’s skin is covered with hard, dry scales and most reptiles lay eggs. Those animals which are cold- blooded don't automatically maintain a constant body temperature.
[21] Growing agricultural crops between rows of planted trees is known as -
A.
Social forestry
B.
Jhum
C.
Taunia system
D.
Agro forestry
Ans:
Taunia system
Explanation :
The Taungya system involves growing agricultural crops between rows of planted trees (sal, teak, etc). Along with jhum cultivation, it is one of the well-known systems of agro forestry programmes in practice in our country.
[22] Which of the following increases the rate of heart beat?
A.
Peripheral nerves
B.
Sympathetic nerves
C.
Parasympathetic nerves
D.
Cranial nerves
Ans:
Sympathetic nerves
Explanation :
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate.
[23] Riboflavin is a/an -
A.
Vitamin
B.
Hormone
C.
Fatty acid
D.
Enzyme
Ans:
Vitamin
Explanation :
Riboflavin, also known as vitamin B2, is one of the eight B-complex vitamins. It is a water-soluble vitamin that functions as a coenzyme, meaning that it is required for enzymes (proteins) to perform normal physiological actions. Riboflavin is found in milk, cheese, eggs, leaf vegetables, liver, kidneys, legumes, mushrooms, and almonds.
[24] Locomotory organ of a starfish is -
A.
Tube feet
B.
Paddle
C.
Muscular foot
D.
Flipper
Ans:
Tube feet
Explanation :
Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.
[25] Penicillin is extracted from -
A.
yeast
B.
algae
C.
fungus
D.
lichen
Ans:
fungus
Explanation :
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.
Explanation :
Ascorbic acid is a naturally occurring organic compound with antioxidant properties which is one form of Vitamin C. It dissolves well in water to give mildly acidic solutions. It is used to prevent and treat scurvy, a disease caused by a lack of vitamin C in the body
[2] The biological process in which both aerobes and anaerobes degrade organic matter is -
A.
Manuring
B.
Composting
C.
Digesting
D.
Nitrifying
Ans:
Composting
Explanation :
Composting is the decomposition of plant remains and other once-living materials to make an earthy, dark, crumbly substance that is excellent for enriching soil. It is the chief way to recycle wastes.
[3] The cuticle is absent in -
A.
Leaf
B.
Stem
C.
Root
D.
Fruit
Ans:
Leaf
Explanation :
The epidermis of the stem and the leaf is usually surrounded by a thin, covering called cuticle. It is formed by a waxy substance called cutin. It is meant for preventing excessive evaporation of water. Cuticle is absent in the root epidermis.
[4] Which of the following is not a mosquito borne disease?
A.
Dengue
B.
Malaria
C.
Sleeping sickness
D.
Filariasis
Ans:
Sleeping sickness
Explanation :
Sleeping sickness, also called African trypanosomiasis, disease caused by infection with the flagellate protozoan Trypanosoma brucei gambiense or the closely related subspecies T. brucei rhodesiense, transmitted by the tsetse fly (genus Glossina).
[5] Which is not a natural fibre?
A.
Linen
B.
Silk
C.
Jute
D.
Nylon
Ans:
Nylon
Explanation :
Jute is a long, soft, shiny vegetable fiber that can be spun into coarse, strong threads. "Nylon" is not a natural fibre. It is a synthetic fibre.
[6] Glucose is a type of -
A.
Pentose sugar
B.
Hexose sugar
C.
Tetrose sugar
D.
Diose sugar
Ans:
Hexose sugar
Explanation :
Three common sugars (glucose, galactose and fructose) share the same molecular formula: C6H12O6. Because of their six carbon atoms, each is a hexose. They are "single" sugars or monosaccharides.
[7] Number of mitochondria in bacterial cell is -
A.
one
B.
two
C.
many
D.
zero
Ans:
zero
Explanation :
Bacteria are prokaryotes, which, by definition, are cells that don't possess membrane-bound organelles. Mitochondria are membrane-bound organelles. Cellular respiration, in prokaryotes, occurs within the cytoplasm or inner surfaces of the cell.
[8] The maximum fixation of solar energy is done by -
A.
Protozoa
B.
Bacteria
C.
Fungi
D.
Green plants
Ans:
Green plants
Explanation :
The maximum 20% of the input of solar energy falling on leaves is converted into chemical energy by green plants. Green plants utilize solar energy and synthesize sugar from CO2 and water through the process of photosynthesis. However, they are able to utilize only 3% of the light energy that strikes on their green parts; the rest is dissipated as heat.
[9] Which one of the following chemicals is associated with muscle fatigue?
A.
Uric acid
B.
Acetic acid
C.
Pyruvic acid
D.
Lactic acid
Ans:
Lactic acid
Explanation :
Muscle fatigue refers to the decline in muscle force generated over sustained periods of activity. Intracellular acidosis due mainly to lactic acid accumulation has been regarded as the most important cause of skeletal muscle fatigue. Lactic acid accumulation leads to increased intracellular hydrogen ion (H+) concentration that leads to a weaker contraction.
[10] Which of the following is a form of sexual reproduction?
A.
Fragmentation
B.
Haemapheoditism
C.
Budding
D.
Fission
Ans:
Haemapheoditism
Explanation :
Hermaphroditism is a form of sexual reproduction. Hermaphrodite is an organism that has reproductive organs normally associated with both male and female sexes. Hermaphroditic plants—most flowering plants, or angiosperms—are bisexual. Hermaphroditic animals—mostly invertebrates such as worms, moss animals, trematodes, snails, slugs, etc—are usually parasitic, permanently attached to another animal or plant.
[11] The 'Red Data Book' is the documentation of endangered rare species of:
A.
Flora
B.
Fauna
C.
Other living organisms
D.
All of these are correct
Ans:
All of these are correct
Explanation :
A Red Data Book contains lists of species whose continued existence is threatened. Species are classified into different categories of perceived risk. It documents rare and endangered species of animals, plants and fungi, as well as other living organisms in an area, region or country.
[12] The parts of human body affected by Pyria are:
A.
eyes
B.
small intestine
C.
teeth and gums
D.
large intestine
Ans:
teeth and gums
Explanation :
Pyria, or periodontal disease, is a progressive gum disease characterized by inflammation resulting from the toxins found in plaque. It leads to bleeding of the gums. If allowed to progress, Pyria begins to destroy underlying tissue, which may eventually lead to tooth loss or infection in other areas of the body as the bacteria travels by bloodstream.
[13] What is the most basic criteria used to decide whether something is alive?
A.
Walking
B.
Breathing
C.
Molecular movements
D.
Life processes
Ans:
Life processes
Explanation :
Mostly, any kind of visible movement such as breathing, walking or growing is referred to decide if something is alive or not. But, a living organism may have movements not visible to the naked eye.
[14] Which of the following is known as ‘suicide bags of the cell’?
A.
Mitochondria
B.
Golgi Bodies
C.
Lysosomes
D.
Ribosomes
Ans:
Lysosomes
Explanation :
Lysosomes are a kind of waste disposal system of the cell. It contains digestive enzymes for almost all types of organic materials.
[15] The waste management technique that involves the use of microorganisms to remove or neutralize pollutants from contaminated site is called -
A.
Bio sensor
B.
Bio magnification
C.
Bio remediation
D.
Bio concentration
Ans:
Bio remediation
Explanation :
Bioremediation is a process used to treat contaminated media, including water, soil and subsurface material, by altering environmental conditions to stimulate growth of microorganisms and degrade the target pollutants.
[16] Who is known as the 'Father of Green Revolution' in India?
A.
G. Paul
B.
Norman Borlaug
C.
Van Neil
D.
Dr. Mithchell
Ans:
Norman Borlaug
Explanation :
Norman Borlaug, an American biologist and humanitarian, is globally known as the Father of Green Revolution for introducing techniques that contributed to the extensive increases in agricultural production. He is credited with saving over a billion people worldwide from starvation. M. S. Swaminathan is known as "Indian Father of Green Revolution" for his leadership in introducing and further developing high-yielding varieties of wheat in India.
[17] The specific role of Vitamin K is in the synthesis of -
A.
Albumin.
B.
Antibodies
C.
Globulin
D.
Prothrombin
Ans:
Prothrombin
Explanation :
Vitamin K is a necessary participant in synthesis of several proteins that mediate both coagulation and anticoagulation. It is noteworthy for the synthesis of Prothrombin (coagulation factor II) that forms thrombin in the clotting process. Vitamin K is integrally involved in the clotting mechanism of blood.
[18] Increased RBC's in the blood leads to a condition called -
A.
Anemia
B.
Haemophilia
C.
Polycythemia
D.
Leukaemia
Ans:
Polycythemia
Explanation :
Polycythemia is an abnormally high concentration of hemoglobin in the blood through an increase in red cell numbers. People with this condition have thicker blood, which makes it harder for blood to circulate around the body. A relatively stable number of RBCs is maintained in the circulation by increasing or decreasing the rate of production by the bone marrow.
[19] 'Mendel' is known as -
A.
Father of Physiology
B.
Father of Geology
C.
Father of Genetics
D.
Father of Biology
Ans:
Father of Biology
Explanation :
Gregor Mendal is known as the 'Father of modern genetics.' Through his pea plant experiments conducted between 1856 and 1863, he discovered the fundamental laws of inheritance.
[20] What makes a reptile a reptile?
A.
Cold blooded
B.
Warm Blooded
C.
Non-Hearing
D.
Egg-laying
Ans:
Egg-laying
Explanation :
Reptile’s skin is covered with hard, dry scales and most reptiles lay eggs. Those animals which are cold- blooded don't automatically maintain a constant body temperature.
[21] Growing agricultural crops between rows of planted trees is known as -
A.
Social forestry
B.
Jhum
C.
Taunia system
D.
Agro forestry
Ans:
Taunia system
Explanation :
The Taungya system involves growing agricultural crops between rows of planted trees (sal, teak, etc). Along with jhum cultivation, it is one of the well-known systems of agro forestry programmes in practice in our country.
[22] Which of the following increases the rate of heart beat?
A.
Peripheral nerves
B.
Sympathetic nerves
C.
Parasympathetic nerves
D.
Cranial nerves
Ans:
Sympathetic nerves
Explanation :
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate.
[23] Riboflavin is a/an -
A.
Vitamin
B.
Hormone
C.
Fatty acid
D.
Enzyme
Ans:
Vitamin
Explanation :
Riboflavin, also known as vitamin B2, is one of the eight B-complex vitamins. It is a water-soluble vitamin that functions as a coenzyme, meaning that it is required for enzymes (proteins) to perform normal physiological actions. Riboflavin is found in milk, cheese, eggs, leaf vegetables, liver, kidneys, legumes, mushrooms, and almonds.
[24] Locomotory organ of a starfish is -
A.
Tube feet
B.
Paddle
C.
Muscular foot
D.
Flipper
Ans:
Tube feet
Explanation :
Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.
[25] Penicillin is extracted from -
A.
yeast
B.
algae
C.
fungus
D.
lichen
Ans:
fungus
Explanation :
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.
Explanation :
The epidermis of the stem and the leaf is usually surrounded by a thin, covering called cuticle. It is formed by a waxy substance called cutin. It is meant for preventing excessive evaporation of water. Cuticle is absent in the root epidermis.
[4] Which of the following is not a mosquito borne disease?
A.
Dengue
B.
Malaria
C.
Sleeping sickness
D.
Filariasis
Ans:
Sleeping sickness
Explanation :
Sleeping sickness, also called African trypanosomiasis, disease caused by infection with the flagellate protozoan Trypanosoma brucei gambiense or the closely related subspecies T. brucei rhodesiense, transmitted by the tsetse fly (genus Glossina).
[5] Which is not a natural fibre?
A.
Linen
B.
Silk
C.
Jute
D.
Nylon
Ans:
Nylon
Explanation :
Jute is a long, soft, shiny vegetable fiber that can be spun into coarse, strong threads. "Nylon" is not a natural fibre. It is a synthetic fibre.
[6] Glucose is a type of -
A.
Pentose sugar
B.
Hexose sugar
C.
Tetrose sugar
D.
Diose sugar
Ans:
Hexose sugar
Explanation :
Three common sugars (glucose, galactose and fructose) share the same molecular formula: C6H12O6. Because of their six carbon atoms, each is a hexose. They are "single" sugars or monosaccharides.
[7] Number of mitochondria in bacterial cell is -
A.
one
B.
two
C.
many
D.
zero
Ans:
zero
Explanation :
Bacteria are prokaryotes, which, by definition, are cells that don't possess membrane-bound organelles. Mitochondria are membrane-bound organelles. Cellular respiration, in prokaryotes, occurs within the cytoplasm or inner surfaces of the cell.
[8] The maximum fixation of solar energy is done by -
A.
Protozoa
B.
Bacteria
C.
Fungi
D.
Green plants
Ans:
Green plants
Explanation :
The maximum 20% of the input of solar energy falling on leaves is converted into chemical energy by green plants. Green plants utilize solar energy and synthesize sugar from CO2 and water through the process of photosynthesis. However, they are able to utilize only 3% of the light energy that strikes on their green parts; the rest is dissipated as heat.
[9] Which one of the following chemicals is associated with muscle fatigue?
A.
Uric acid
B.
Acetic acid
C.
Pyruvic acid
D.
Lactic acid
Ans:
Lactic acid
Explanation :
Muscle fatigue refers to the decline in muscle force generated over sustained periods of activity. Intracellular acidosis due mainly to lactic acid accumulation has been regarded as the most important cause of skeletal muscle fatigue. Lactic acid accumulation leads to increased intracellular hydrogen ion (H+) concentration that leads to a weaker contraction.
[10] Which of the following is a form of sexual reproduction?
A.
Fragmentation
B.
Haemapheoditism
C.
Budding
D.
Fission
Ans:
Haemapheoditism
Explanation :
Hermaphroditism is a form of sexual reproduction. Hermaphrodite is an organism that has reproductive organs normally associated with both male and female sexes. Hermaphroditic plants—most flowering plants, or angiosperms—are bisexual. Hermaphroditic animals—mostly invertebrates such as worms, moss animals, trematodes, snails, slugs, etc—are usually parasitic, permanently attached to another animal or plant.
[11] The 'Red Data Book' is the documentation of endangered rare species of:
A.
Flora
B.
Fauna
C.
Other living organisms
D.
All of these are correct
Ans:
All of these are correct
Explanation :
A Red Data Book contains lists of species whose continued existence is threatened. Species are classified into different categories of perceived risk. It documents rare and endangered species of animals, plants and fungi, as well as other living organisms in an area, region or country.
[12] The parts of human body affected by Pyria are:
A.
eyes
B.
small intestine
C.
teeth and gums
D.
large intestine
Ans:
teeth and gums
Explanation :
Pyria, or periodontal disease, is a progressive gum disease characterized by inflammation resulting from the toxins found in plaque. It leads to bleeding of the gums. If allowed to progress, Pyria begins to destroy underlying tissue, which may eventually lead to tooth loss or infection in other areas of the body as the bacteria travels by bloodstream.
[13] What is the most basic criteria used to decide whether something is alive?
A.
Walking
B.
Breathing
C.
Molecular movements
D.
Life processes
Ans:
Life processes
Explanation :
Mostly, any kind of visible movement such as breathing, walking or growing is referred to decide if something is alive or not. But, a living organism may have movements not visible to the naked eye.
[14] Which of the following is known as ‘suicide bags of the cell’?
A.
Mitochondria
B.
Golgi Bodies
C.
Lysosomes
D.
Ribosomes
Ans:
Lysosomes
Explanation :
Lysosomes are a kind of waste disposal system of the cell. It contains digestive enzymes for almost all types of organic materials.
[15] The waste management technique that involves the use of microorganisms to remove or neutralize pollutants from contaminated site is called -
A.
Bio sensor
B.
Bio magnification
C.
Bio remediation
D.
Bio concentration
Ans:
Bio remediation
Explanation :
Bioremediation is a process used to treat contaminated media, including water, soil and subsurface material, by altering environmental conditions to stimulate growth of microorganisms and degrade the target pollutants.
[16] Who is known as the 'Father of Green Revolution' in India?
A.
G. Paul
B.
Norman Borlaug
C.
Van Neil
D.
Dr. Mithchell
Ans:
Norman Borlaug
Explanation :
Norman Borlaug, an American biologist and humanitarian, is globally known as the Father of Green Revolution for introducing techniques that contributed to the extensive increases in agricultural production. He is credited with saving over a billion people worldwide from starvation. M. S. Swaminathan is known as "Indian Father of Green Revolution" for his leadership in introducing and further developing high-yielding varieties of wheat in India.
[17] The specific role of Vitamin K is in the synthesis of -
A.
Albumin.
B.
Antibodies
C.
Globulin
D.
Prothrombin
Ans:
Prothrombin
Explanation :
Vitamin K is a necessary participant in synthesis of several proteins that mediate both coagulation and anticoagulation. It is noteworthy for the synthesis of Prothrombin (coagulation factor II) that forms thrombin in the clotting process. Vitamin K is integrally involved in the clotting mechanism of blood.
[18] Increased RBC's in the blood leads to a condition called -
A.
Anemia
B.
Haemophilia
C.
Polycythemia
D.
Leukaemia
Ans:
Polycythemia
Explanation :
Polycythemia is an abnormally high concentration of hemoglobin in the blood through an increase in red cell numbers. People with this condition have thicker blood, which makes it harder for blood to circulate around the body. A relatively stable number of RBCs is maintained in the circulation by increasing or decreasing the rate of production by the bone marrow.
[19] 'Mendel' is known as -
A.
Father of Physiology
B.
Father of Geology
C.
Father of Genetics
D.
Father of Biology
Ans:
Father of Biology
Explanation :
Gregor Mendal is known as the 'Father of modern genetics.' Through his pea plant experiments conducted between 1856 and 1863, he discovered the fundamental laws of inheritance.
[20] What makes a reptile a reptile?
A.
Cold blooded
B.
Warm Blooded
C.
Non-Hearing
D.
Egg-laying
Ans:
Egg-laying
Explanation :
Reptile’s skin is covered with hard, dry scales and most reptiles lay eggs. Those animals which are cold- blooded don't automatically maintain a constant body temperature.
[21] Growing agricultural crops between rows of planted trees is known as -
A.
Social forestry
B.
Jhum
C.
Taunia system
D.
Agro forestry
Ans:
Taunia system
Explanation :
The Taungya system involves growing agricultural crops between rows of planted trees (sal, teak, etc). Along with jhum cultivation, it is one of the well-known systems of agro forestry programmes in practice in our country.
[22] Which of the following increases the rate of heart beat?
A.
Peripheral nerves
B.
Sympathetic nerves
C.
Parasympathetic nerves
D.
Cranial nerves
Ans:
Sympathetic nerves
Explanation :
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate.
[23] Riboflavin is a/an -
A.
Vitamin
B.
Hormone
C.
Fatty acid
D.
Enzyme
Ans:
Vitamin
Explanation :
Riboflavin, also known as vitamin B2, is one of the eight B-complex vitamins. It is a water-soluble vitamin that functions as a coenzyme, meaning that it is required for enzymes (proteins) to perform normal physiological actions. Riboflavin is found in milk, cheese, eggs, leaf vegetables, liver, kidneys, legumes, mushrooms, and almonds.
[24] Locomotory organ of a starfish is -
A.
Tube feet
B.
Paddle
C.
Muscular foot
D.
Flipper
Ans:
Tube feet
Explanation :
Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.
[25] Penicillin is extracted from -
A.
yeast
B.
algae
C.
fungus
D.
lichen
Ans:
fungus
Explanation :
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.
Explanation :
Jute is a long, soft, shiny vegetable fiber that can be spun into coarse, strong threads. "Nylon" is not a natural fibre. It is a synthetic fibre.
[6] Glucose is a type of -
A.
Pentose sugar
B.
Hexose sugar
C.
Tetrose sugar
D.
Diose sugar
Ans:
Hexose sugar
Explanation :
Three common sugars (glucose, galactose and fructose) share the same molecular formula: C6H12O6. Because of their six carbon atoms, each is a hexose. They are "single" sugars or monosaccharides.
[7] Number of mitochondria in bacterial cell is -
A.
one
B.
two
C.
many
D.
zero
Ans:
zero
Explanation :
Bacteria are prokaryotes, which, by definition, are cells that don't possess membrane-bound organelles. Mitochondria are membrane-bound organelles. Cellular respiration, in prokaryotes, occurs within the cytoplasm or inner surfaces of the cell.
[8] The maximum fixation of solar energy is done by -
A.
Protozoa
B.
Bacteria
C.
Fungi
D.
Green plants
Ans:
Green plants
Explanation :
The maximum 20% of the input of solar energy falling on leaves is converted into chemical energy by green plants. Green plants utilize solar energy and synthesize sugar from CO2 and water through the process of photosynthesis. However, they are able to utilize only 3% of the light energy that strikes on their green parts; the rest is dissipated as heat.
[9] Which one of the following chemicals is associated with muscle fatigue?
A.
Uric acid
B.
Acetic acid
C.
Pyruvic acid
D.
Lactic acid
Ans:
Lactic acid
Explanation :
Muscle fatigue refers to the decline in muscle force generated over sustained periods of activity. Intracellular acidosis due mainly to lactic acid accumulation has been regarded as the most important cause of skeletal muscle fatigue. Lactic acid accumulation leads to increased intracellular hydrogen ion (H+) concentration that leads to a weaker contraction.
[10] Which of the following is a form of sexual reproduction?
A.
Fragmentation
B.
Haemapheoditism
C.
Budding
D.
Fission
Ans:
Haemapheoditism
Explanation :
Hermaphroditism is a form of sexual reproduction. Hermaphrodite is an organism that has reproductive organs normally associated with both male and female sexes. Hermaphroditic plants—most flowering plants, or angiosperms—are bisexual. Hermaphroditic animals—mostly invertebrates such as worms, moss animals, trematodes, snails, slugs, etc—are usually parasitic, permanently attached to another animal or plant.
[11] The 'Red Data Book' is the documentation of endangered rare species of:
A.
Flora
B.
Fauna
C.
Other living organisms
D.
All of these are correct
Ans:
All of these are correct
Explanation :
A Red Data Book contains lists of species whose continued existence is threatened. Species are classified into different categories of perceived risk. It documents rare and endangered species of animals, plants and fungi, as well as other living organisms in an area, region or country.
[12] The parts of human body affected by Pyria are:
A.
eyes
B.
small intestine
C.
teeth and gums
D.
large intestine
Ans:
teeth and gums
Explanation :
Pyria, or periodontal disease, is a progressive gum disease characterized by inflammation resulting from the toxins found in plaque. It leads to bleeding of the gums. If allowed to progress, Pyria begins to destroy underlying tissue, which may eventually lead to tooth loss or infection in other areas of the body as the bacteria travels by bloodstream.
[13] What is the most basic criteria used to decide whether something is alive?
A.
Walking
B.
Breathing
C.
Molecular movements
D.
Life processes
Ans:
Life processes
Explanation :
Mostly, any kind of visible movement such as breathing, walking or growing is referred to decide if something is alive or not. But, a living organism may have movements not visible to the naked eye.
[14] Which of the following is known as ‘suicide bags of the cell’?
A.
Mitochondria
B.
Golgi Bodies
C.
Lysosomes
D.
Ribosomes
Ans:
Lysosomes
Explanation :
Lysosomes are a kind of waste disposal system of the cell. It contains digestive enzymes for almost all types of organic materials.
[15] The waste management technique that involves the use of microorganisms to remove or neutralize pollutants from contaminated site is called -
A.
Bio sensor
B.
Bio magnification
C.
Bio remediation
D.
Bio concentration
Ans:
Bio remediation
Explanation :
Bioremediation is a process used to treat contaminated media, including water, soil and subsurface material, by altering environmental conditions to stimulate growth of microorganisms and degrade the target pollutants.
[16] Who is known as the 'Father of Green Revolution' in India?
A.
G. Paul
B.
Norman Borlaug
C.
Van Neil
D.
Dr. Mithchell
Ans:
Norman Borlaug
Explanation :
Norman Borlaug, an American biologist and humanitarian, is globally known as the Father of Green Revolution for introducing techniques that contributed to the extensive increases in agricultural production. He is credited with saving over a billion people worldwide from starvation. M. S. Swaminathan is known as "Indian Father of Green Revolution" for his leadership in introducing and further developing high-yielding varieties of wheat in India.
[17] The specific role of Vitamin K is in the synthesis of -
A.
Albumin.
B.
Antibodies
C.
Globulin
D.
Prothrombin
Ans:
Prothrombin
Explanation :
Vitamin K is a necessary participant in synthesis of several proteins that mediate both coagulation and anticoagulation. It is noteworthy for the synthesis of Prothrombin (coagulation factor II) that forms thrombin in the clotting process. Vitamin K is integrally involved in the clotting mechanism of blood.
[18] Increased RBC's in the blood leads to a condition called -
A.
Anemia
B.
Haemophilia
C.
Polycythemia
D.
Leukaemia
Ans:
Polycythemia
Explanation :
Polycythemia is an abnormally high concentration of hemoglobin in the blood through an increase in red cell numbers. People with this condition have thicker blood, which makes it harder for blood to circulate around the body. A relatively stable number of RBCs is maintained in the circulation by increasing or decreasing the rate of production by the bone marrow.
[19] 'Mendel' is known as -
A.
Father of Physiology
B.
Father of Geology
C.
Father of Genetics
D.
Father of Biology
Ans:
Father of Biology
Explanation :
Gregor Mendal is known as the 'Father of modern genetics.' Through his pea plant experiments conducted between 1856 and 1863, he discovered the fundamental laws of inheritance.
[20] What makes a reptile a reptile?
A.
Cold blooded
B.
Warm Blooded
C.
Non-Hearing
D.
Egg-laying
Ans:
Egg-laying
Explanation :
Reptile’s skin is covered with hard, dry scales and most reptiles lay eggs. Those animals which are cold- blooded don't automatically maintain a constant body temperature.
[21] Growing agricultural crops between rows of planted trees is known as -
A.
Social forestry
B.
Jhum
C.
Taunia system
D.
Agro forestry
Ans:
Taunia system
Explanation :
The Taungya system involves growing agricultural crops between rows of planted trees (sal, teak, etc). Along with jhum cultivation, it is one of the well-known systems of agro forestry programmes in practice in our country.
[22] Which of the following increases the rate of heart beat?
A.
Peripheral nerves
B.
Sympathetic nerves
C.
Parasympathetic nerves
D.
Cranial nerves
Ans:
Sympathetic nerves
Explanation :
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate.
[23] Riboflavin is a/an -
A.
Vitamin
B.
Hormone
C.
Fatty acid
D.
Enzyme
Ans:
Vitamin
Explanation :
Riboflavin, also known as vitamin B2, is one of the eight B-complex vitamins. It is a water-soluble vitamin that functions as a coenzyme, meaning that it is required for enzymes (proteins) to perform normal physiological actions. Riboflavin is found in milk, cheese, eggs, leaf vegetables, liver, kidneys, legumes, mushrooms, and almonds.
[24] Locomotory organ of a starfish is -
A.
Tube feet
B.
Paddle
C.
Muscular foot
D.
Flipper
Ans:
Tube feet
Explanation :
Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.
[25] Penicillin is extracted from -
A.
yeast
B.
algae
C.
fungus
D.
lichen
Ans:
fungus
Explanation :
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.
Explanation :
Bacteria are prokaryotes, which, by definition, are cells that don't possess membrane-bound organelles. Mitochondria are membrane-bound organelles. Cellular respiration, in prokaryotes, occurs within the cytoplasm or inner surfaces of the cell.
[8] The maximum fixation of solar energy is done by -
A.
Protozoa
B.
Bacteria
C.
Fungi
D.
Green plants
Ans:
Green plants
Explanation :
The maximum 20% of the input of solar energy falling on leaves is converted into chemical energy by green plants. Green plants utilize solar energy and synthesize sugar from CO2 and water through the process of photosynthesis. However, they are able to utilize only 3% of the light energy that strikes on their green parts; the rest is dissipated as heat.
[9] Which one of the following chemicals is associated with muscle fatigue?
A.
Uric acid
B.
Acetic acid
C.
Pyruvic acid
D.
Lactic acid
Ans:
Lactic acid
Explanation :
Muscle fatigue refers to the decline in muscle force generated over sustained periods of activity. Intracellular acidosis due mainly to lactic acid accumulation has been regarded as the most important cause of skeletal muscle fatigue. Lactic acid accumulation leads to increased intracellular hydrogen ion (H+) concentration that leads to a weaker contraction.
[10] Which of the following is a form of sexual reproduction?
A.
Fragmentation
B.
Haemapheoditism
C.
Budding
D.
Fission
Ans:
Haemapheoditism
Explanation :
Hermaphroditism is a form of sexual reproduction. Hermaphrodite is an organism that has reproductive organs normally associated with both male and female sexes. Hermaphroditic plants—most flowering plants, or angiosperms—are bisexual. Hermaphroditic animals—mostly invertebrates such as worms, moss animals, trematodes, snails, slugs, etc—are usually parasitic, permanently attached to another animal or plant.
[11] The 'Red Data Book' is the documentation of endangered rare species of:
A.
Flora
B.
Fauna
C.
Other living organisms
D.
All of these are correct
Ans:
All of these are correct
Explanation :
A Red Data Book contains lists of species whose continued existence is threatened. Species are classified into different categories of perceived risk. It documents rare and endangered species of animals, plants and fungi, as well as other living organisms in an area, region or country.
[12] The parts of human body affected by Pyria are:
A.
eyes
B.
small intestine
C.
teeth and gums
D.
large intestine
Ans:
teeth and gums
Explanation :
Pyria, or periodontal disease, is a progressive gum disease characterized by inflammation resulting from the toxins found in plaque. It leads to bleeding of the gums. If allowed to progress, Pyria begins to destroy underlying tissue, which may eventually lead to tooth loss or infection in other areas of the body as the bacteria travels by bloodstream.
[13] What is the most basic criteria used to decide whether something is alive?
A.
Walking
B.
Breathing
C.
Molecular movements
D.
Life processes
Ans:
Life processes
Explanation :
Mostly, any kind of visible movement such as breathing, walking or growing is referred to decide if something is alive or not. But, a living organism may have movements not visible to the naked eye.
[14] Which of the following is known as ‘suicide bags of the cell’?
A.
Mitochondria
B.
Golgi Bodies
C.
Lysosomes
D.
Ribosomes
Ans:
Lysosomes
Explanation :
Lysosomes are a kind of waste disposal system of the cell. It contains digestive enzymes for almost all types of organic materials.
[15] The waste management technique that involves the use of microorganisms to remove or neutralize pollutants from contaminated site is called -
A.
Bio sensor
B.
Bio magnification
C.
Bio remediation
D.
Bio concentration
Ans:
Bio remediation
Explanation :
Bioremediation is a process used to treat contaminated media, including water, soil and subsurface material, by altering environmental conditions to stimulate growth of microorganisms and degrade the target pollutants.
[16] Who is known as the 'Father of Green Revolution' in India?
A.
G. Paul
B.
Norman Borlaug
C.
Van Neil
D.
Dr. Mithchell
Ans:
Norman Borlaug
Explanation :
Norman Borlaug, an American biologist and humanitarian, is globally known as the Father of Green Revolution for introducing techniques that contributed to the extensive increases in agricultural production. He is credited with saving over a billion people worldwide from starvation. M. S. Swaminathan is known as "Indian Father of Green Revolution" for his leadership in introducing and further developing high-yielding varieties of wheat in India.
[17] The specific role of Vitamin K is in the synthesis of -
A.
Albumin.
B.
Antibodies
C.
Globulin
D.
Prothrombin
Ans:
Prothrombin
Explanation :
Vitamin K is a necessary participant in synthesis of several proteins that mediate both coagulation and anticoagulation. It is noteworthy for the synthesis of Prothrombin (coagulation factor II) that forms thrombin in the clotting process. Vitamin K is integrally involved in the clotting mechanism of blood.
[18] Increased RBC's in the blood leads to a condition called -
A.
Anemia
B.
Haemophilia
C.
Polycythemia
D.
Leukaemia
Ans:
Polycythemia
Explanation :
Polycythemia is an abnormally high concentration of hemoglobin in the blood through an increase in red cell numbers. People with this condition have thicker blood, which makes it harder for blood to circulate around the body. A relatively stable number of RBCs is maintained in the circulation by increasing or decreasing the rate of production by the bone marrow.
[19] 'Mendel' is known as -
A.
Father of Physiology
B.
Father of Geology
C.
Father of Genetics
D.
Father of Biology
Ans:
Father of Biology
Explanation :
Gregor Mendal is known as the 'Father of modern genetics.' Through his pea plant experiments conducted between 1856 and 1863, he discovered the fundamental laws of inheritance.
[20] What makes a reptile a reptile?
A.
Cold blooded
B.
Warm Blooded
C.
Non-Hearing
D.
Egg-laying
Ans:
Egg-laying
Explanation :
Reptile’s skin is covered with hard, dry scales and most reptiles lay eggs. Those animals which are cold- blooded don't automatically maintain a constant body temperature.
[21] Growing agricultural crops between rows of planted trees is known as -
A.
Social forestry
B.
Jhum
C.
Taunia system
D.
Agro forestry
Ans:
Taunia system
Explanation :
The Taungya system involves growing agricultural crops between rows of planted trees (sal, teak, etc). Along with jhum cultivation, it is one of the well-known systems of agro forestry programmes in practice in our country.
[22] Which of the following increases the rate of heart beat?
A.
Peripheral nerves
B.
Sympathetic nerves
C.
Parasympathetic nerves
D.
Cranial nerves
Ans:
Sympathetic nerves
Explanation :
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate.
[23] Riboflavin is a/an -
A.
Vitamin
B.
Hormone
C.
Fatty acid
D.
Enzyme
Ans:
Vitamin
Explanation :
Riboflavin, also known as vitamin B2, is one of the eight B-complex vitamins. It is a water-soluble vitamin that functions as a coenzyme, meaning that it is required for enzymes (proteins) to perform normal physiological actions. Riboflavin is found in milk, cheese, eggs, leaf vegetables, liver, kidneys, legumes, mushrooms, and almonds.
[24] Locomotory organ of a starfish is -
A.
Tube feet
B.
Paddle
C.
Muscular foot
D.
Flipper
Ans:
Tube feet
Explanation :
Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.
[25] Penicillin is extracted from -
A.
yeast
B.
algae
C.
fungus
D.
lichen
Ans:
fungus
Explanation :
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.
Explanation :
Muscle fatigue refers to the decline in muscle force generated over sustained periods of activity. Intracellular acidosis due mainly to lactic acid accumulation has been regarded as the most important cause of skeletal muscle fatigue. Lactic acid accumulation leads to increased intracellular hydrogen ion (H+) concentration that leads to a weaker contraction.
[10] Which of the following is a form of sexual reproduction?
A.
Fragmentation
B.
Haemapheoditism
C.
Budding
D.
Fission
Ans:
Haemapheoditism
Explanation :
Hermaphroditism is a form of sexual reproduction. Hermaphrodite is an organism that has reproductive organs normally associated with both male and female sexes. Hermaphroditic plants—most flowering plants, or angiosperms—are bisexual. Hermaphroditic animals—mostly invertebrates such as worms, moss animals, trematodes, snails, slugs, etc—are usually parasitic, permanently attached to another animal or plant.
[11] The 'Red Data Book' is the documentation of endangered rare species of:
A.
Flora
B.
Fauna
C.
Other living organisms
D.
All of these are correct
Ans:
All of these are correct
Explanation :
A Red Data Book contains lists of species whose continued existence is threatened. Species are classified into different categories of perceived risk. It documents rare and endangered species of animals, plants and fungi, as well as other living organisms in an area, region or country.
[12] The parts of human body affected by Pyria are:
A.
eyes
B.
small intestine
C.
teeth and gums
D.
large intestine
Ans:
teeth and gums
Explanation :
Pyria, or periodontal disease, is a progressive gum disease characterized by inflammation resulting from the toxins found in plaque. It leads to bleeding of the gums. If allowed to progress, Pyria begins to destroy underlying tissue, which may eventually lead to tooth loss or infection in other areas of the body as the bacteria travels by bloodstream.
[13] What is the most basic criteria used to decide whether something is alive?
A.
Walking
B.
Breathing
C.
Molecular movements
D.
Life processes
Ans:
Life processes
Explanation :
Mostly, any kind of visible movement such as breathing, walking or growing is referred to decide if something is alive or not. But, a living organism may have movements not visible to the naked eye.
[14] Which of the following is known as ‘suicide bags of the cell’?
A.
Mitochondria
B.
Golgi Bodies
C.
Lysosomes
D.
Ribosomes
Ans:
Lysosomes
Explanation :
Lysosomes are a kind of waste disposal system of the cell. It contains digestive enzymes for almost all types of organic materials.
[15] The waste management technique that involves the use of microorganisms to remove or neutralize pollutants from contaminated site is called -
A.
Bio sensor
B.
Bio magnification
C.
Bio remediation
D.
Bio concentration
Ans:
Bio remediation
Explanation :
Bioremediation is a process used to treat contaminated media, including water, soil and subsurface material, by altering environmental conditions to stimulate growth of microorganisms and degrade the target pollutants.
[16] Who is known as the 'Father of Green Revolution' in India?
A.
G. Paul
B.
Norman Borlaug
C.
Van Neil
D.
Dr. Mithchell
Ans:
Norman Borlaug
Explanation :
Norman Borlaug, an American biologist and humanitarian, is globally known as the Father of Green Revolution for introducing techniques that contributed to the extensive increases in agricultural production. He is credited with saving over a billion people worldwide from starvation. M. S. Swaminathan is known as "Indian Father of Green Revolution" for his leadership in introducing and further developing high-yielding varieties of wheat in India.
[17] The specific role of Vitamin K is in the synthesis of -
A.
Albumin.
B.
Antibodies
C.
Globulin
D.
Prothrombin
Ans:
Prothrombin
Explanation :
Vitamin K is a necessary participant in synthesis of several proteins that mediate both coagulation and anticoagulation. It is noteworthy for the synthesis of Prothrombin (coagulation factor II) that forms thrombin in the clotting process. Vitamin K is integrally involved in the clotting mechanism of blood.
[18] Increased RBC's in the blood leads to a condition called -
A.
Anemia
B.
Haemophilia
C.
Polycythemia
D.
Leukaemia
Ans:
Polycythemia
Explanation :
Polycythemia is an abnormally high concentration of hemoglobin in the blood through an increase in red cell numbers. People with this condition have thicker blood, which makes it harder for blood to circulate around the body. A relatively stable number of RBCs is maintained in the circulation by increasing or decreasing the rate of production by the bone marrow.
[19] 'Mendel' is known as -
A.
Father of Physiology
B.
Father of Geology
C.
Father of Genetics
D.
Father of Biology
Ans:
Father of Biology
Explanation :
Gregor Mendal is known as the 'Father of modern genetics.' Through his pea plant experiments conducted between 1856 and 1863, he discovered the fundamental laws of inheritance.
[20] What makes a reptile a reptile?
A.
Cold blooded
B.
Warm Blooded
C.
Non-Hearing
D.
Egg-laying
Ans:
Egg-laying
Explanation :
Reptile’s skin is covered with hard, dry scales and most reptiles lay eggs. Those animals which are cold- blooded don't automatically maintain a constant body temperature.
[21] Growing agricultural crops between rows of planted trees is known as -
A.
Social forestry
B.
Jhum
C.
Taunia system
D.
Agro forestry
Ans:
Taunia system
Explanation :
The Taungya system involves growing agricultural crops between rows of planted trees (sal, teak, etc). Along with jhum cultivation, it is one of the well-known systems of agro forestry programmes in practice in our country.
[22] Which of the following increases the rate of heart beat?
A.
Peripheral nerves
B.
Sympathetic nerves
C.
Parasympathetic nerves
D.
Cranial nerves
Ans:
Sympathetic nerves
Explanation :
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate.
[23] Riboflavin is a/an -
A.
Vitamin
B.
Hormone
C.
Fatty acid
D.
Enzyme
Ans:
Vitamin
Explanation :
Riboflavin, also known as vitamin B2, is one of the eight B-complex vitamins. It is a water-soluble vitamin that functions as a coenzyme, meaning that it is required for enzymes (proteins) to perform normal physiological actions. Riboflavin is found in milk, cheese, eggs, leaf vegetables, liver, kidneys, legumes, mushrooms, and almonds.
[24] Locomotory organ of a starfish is -
A.
Tube feet
B.
Paddle
C.
Muscular foot
D.
Flipper
Ans:
Tube feet
Explanation :
Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.
[25] Penicillin is extracted from -
A.
yeast
B.
algae
C.
fungus
D.
lichen
Ans:
fungus
Explanation :
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.
Explanation :
A Red Data Book contains lists of species whose continued existence is threatened. Species are classified into different categories of perceived risk. It documents rare and endangered species of animals, plants and fungi, as well as other living organisms in an area, region or country.
[12] The parts of human body affected by Pyria are:
A.
eyes
B.
small intestine
C.
teeth and gums
D.
large intestine
Ans:
teeth and gums
Explanation :
Pyria, or periodontal disease, is a progressive gum disease characterized by inflammation resulting from the toxins found in plaque. It leads to bleeding of the gums. If allowed to progress, Pyria begins to destroy underlying tissue, which may eventually lead to tooth loss or infection in other areas of the body as the bacteria travels by bloodstream.
[13] What is the most basic criteria used to decide whether something is alive?
A.
Walking
B.
Breathing
C.
Molecular movements
D.
Life processes
Ans:
Life processes
Explanation :
Mostly, any kind of visible movement such as breathing, walking or growing is referred to decide if something is alive or not. But, a living organism may have movements not visible to the naked eye.
[14] Which of the following is known as ‘suicide bags of the cell’?
A.
Mitochondria
B.
Golgi Bodies
C.
Lysosomes
D.
Ribosomes
Ans:
Lysosomes
Explanation :
Lysosomes are a kind of waste disposal system of the cell. It contains digestive enzymes for almost all types of organic materials.
[15] The waste management technique that involves the use of microorganisms to remove or neutralize pollutants from contaminated site is called -
A.
Bio sensor
B.
Bio magnification
C.
Bio remediation
D.
Bio concentration
Ans:
Bio remediation
Explanation :
Bioremediation is a process used to treat contaminated media, including water, soil and subsurface material, by altering environmental conditions to stimulate growth of microorganisms and degrade the target pollutants.
[16] Who is known as the 'Father of Green Revolution' in India?
A.
G. Paul
B.
Norman Borlaug
C.
Van Neil
D.
Dr. Mithchell
Ans:
Norman Borlaug
Explanation :
Norman Borlaug, an American biologist and humanitarian, is globally known as the Father of Green Revolution for introducing techniques that contributed to the extensive increases in agricultural production. He is credited with saving over a billion people worldwide from starvation. M. S. Swaminathan is known as "Indian Father of Green Revolution" for his leadership in introducing and further developing high-yielding varieties of wheat in India.
[17] The specific role of Vitamin K is in the synthesis of -
A.
Albumin.
B.
Antibodies
C.
Globulin
D.
Prothrombin
Ans:
Prothrombin
Explanation :
Vitamin K is a necessary participant in synthesis of several proteins that mediate both coagulation and anticoagulation. It is noteworthy for the synthesis of Prothrombin (coagulation factor II) that forms thrombin in the clotting process. Vitamin K is integrally involved in the clotting mechanism of blood.
[18] Increased RBC's in the blood leads to a condition called -
A.
Anemia
B.
Haemophilia
C.
Polycythemia
D.
Leukaemia
Ans:
Polycythemia
Explanation :
Polycythemia is an abnormally high concentration of hemoglobin in the blood through an increase in red cell numbers. People with this condition have thicker blood, which makes it harder for blood to circulate around the body. A relatively stable number of RBCs is maintained in the circulation by increasing or decreasing the rate of production by the bone marrow.
[19] 'Mendel' is known as -
A.
Father of Physiology
B.
Father of Geology
C.
Father of Genetics
D.
Father of Biology
Ans:
Father of Biology
Explanation :
Gregor Mendal is known as the 'Father of modern genetics.' Through his pea plant experiments conducted between 1856 and 1863, he discovered the fundamental laws of inheritance.
[20] What makes a reptile a reptile?
A.
Cold blooded
B.
Warm Blooded
C.
Non-Hearing
D.
Egg-laying
Ans:
Egg-laying
Explanation :
Reptile’s skin is covered with hard, dry scales and most reptiles lay eggs. Those animals which are cold- blooded don't automatically maintain a constant body temperature.
[21] Growing agricultural crops between rows of planted trees is known as -
A.
Social forestry
B.
Jhum
C.
Taunia system
D.
Agro forestry
Ans:
Taunia system
Explanation :
The Taungya system involves growing agricultural crops between rows of planted trees (sal, teak, etc). Along with jhum cultivation, it is one of the well-known systems of agro forestry programmes in practice in our country.
[22] Which of the following increases the rate of heart beat?
A.
Peripheral nerves
B.
Sympathetic nerves
C.
Parasympathetic nerves
D.
Cranial nerves
Ans:
Sympathetic nerves
Explanation :
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate.
[23] Riboflavin is a/an -
A.
Vitamin
B.
Hormone
C.
Fatty acid
D.
Enzyme
Ans:
Vitamin
Explanation :
Riboflavin, also known as vitamin B2, is one of the eight B-complex vitamins. It is a water-soluble vitamin that functions as a coenzyme, meaning that it is required for enzymes (proteins) to perform normal physiological actions. Riboflavin is found in milk, cheese, eggs, leaf vegetables, liver, kidneys, legumes, mushrooms, and almonds.
[24] Locomotory organ of a starfish is -
A.
Tube feet
B.
Paddle
C.
Muscular foot
D.
Flipper
Ans:
Tube feet
Explanation :
Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.
[25] Penicillin is extracted from -
A.
yeast
B.
algae
C.
fungus
D.
lichen
Ans:
fungus
Explanation :
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.
Explanation :
Mostly, any kind of visible movement such as breathing, walking or growing is referred to decide if something is alive or not. But, a living organism may have movements not visible to the naked eye.
[14] Which of the following is known as ‘suicide bags of the cell’?
A.
Mitochondria
B.
Golgi Bodies
C.
Lysosomes
D.
Ribosomes
Ans:
Lysosomes
Explanation :
Lysosomes are a kind of waste disposal system of the cell. It contains digestive enzymes for almost all types of organic materials.
[15] The waste management technique that involves the use of microorganisms to remove or neutralize pollutants from contaminated site is called -
A.
Bio sensor
B.
Bio magnification
C.
Bio remediation
D.
Bio concentration
Ans:
Bio remediation
Explanation :
Bioremediation is a process used to treat contaminated media, including water, soil and subsurface material, by altering environmental conditions to stimulate growth of microorganisms and degrade the target pollutants.
[16] Who is known as the 'Father of Green Revolution' in India?
A.
G. Paul
B.
Norman Borlaug
C.
Van Neil
D.
Dr. Mithchell
Ans:
Norman Borlaug
Explanation :
Norman Borlaug, an American biologist and humanitarian, is globally known as the Father of Green Revolution for introducing techniques that contributed to the extensive increases in agricultural production. He is credited with saving over a billion people worldwide from starvation. M. S. Swaminathan is known as "Indian Father of Green Revolution" for his leadership in introducing and further developing high-yielding varieties of wheat in India.
[17] The specific role of Vitamin K is in the synthesis of -
A.
Albumin.
B.
Antibodies
C.
Globulin
D.
Prothrombin
Ans:
Prothrombin
Explanation :
Vitamin K is a necessary participant in synthesis of several proteins that mediate both coagulation and anticoagulation. It is noteworthy for the synthesis of Prothrombin (coagulation factor II) that forms thrombin in the clotting process. Vitamin K is integrally involved in the clotting mechanism of blood.
[18] Increased RBC's in the blood leads to a condition called -
A.
Anemia
B.
Haemophilia
C.
Polycythemia
D.
Leukaemia
Ans:
Polycythemia
Explanation :
Polycythemia is an abnormally high concentration of hemoglobin in the blood through an increase in red cell numbers. People with this condition have thicker blood, which makes it harder for blood to circulate around the body. A relatively stable number of RBCs is maintained in the circulation by increasing or decreasing the rate of production by the bone marrow.
[19] 'Mendel' is known as -
A.
Father of Physiology
B.
Father of Geology
C.
Father of Genetics
D.
Father of Biology
Ans:
Father of Biology
Explanation :
Gregor Mendal is known as the 'Father of modern genetics.' Through his pea plant experiments conducted between 1856 and 1863, he discovered the fundamental laws of inheritance.
[20] What makes a reptile a reptile?
A.
Cold blooded
B.
Warm Blooded
C.
Non-Hearing
D.
Egg-laying
Ans:
Egg-laying
Explanation :
Reptile’s skin is covered with hard, dry scales and most reptiles lay eggs. Those animals which are cold- blooded don't automatically maintain a constant body temperature.
[21] Growing agricultural crops between rows of planted trees is known as -
A.
Social forestry
B.
Jhum
C.
Taunia system
D.
Agro forestry
Ans:
Taunia system
Explanation :
The Taungya system involves growing agricultural crops between rows of planted trees (sal, teak, etc). Along with jhum cultivation, it is one of the well-known systems of agro forestry programmes in practice in our country.
[22] Which of the following increases the rate of heart beat?
A.
Peripheral nerves
B.
Sympathetic nerves
C.
Parasympathetic nerves
D.
Cranial nerves
Ans:
Sympathetic nerves
Explanation :
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate.
[23] Riboflavin is a/an -
A.
Vitamin
B.
Hormone
C.
Fatty acid
D.
Enzyme
Ans:
Vitamin
Explanation :
Riboflavin, also known as vitamin B2, is one of the eight B-complex vitamins. It is a water-soluble vitamin that functions as a coenzyme, meaning that it is required for enzymes (proteins) to perform normal physiological actions. Riboflavin is found in milk, cheese, eggs, leaf vegetables, liver, kidneys, legumes, mushrooms, and almonds.
[24] Locomotory organ of a starfish is -
A.
Tube feet
B.
Paddle
C.
Muscular foot
D.
Flipper
Ans:
Tube feet
Explanation :
Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.
[25] Penicillin is extracted from -
A.
yeast
B.
algae
C.
fungus
D.
lichen
Ans:
fungus
Explanation :
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.
Explanation :
Bioremediation is a process used to treat contaminated media, including water, soil and subsurface material, by altering environmental conditions to stimulate growth of microorganisms and degrade the target pollutants.
[16] Who is known as the 'Father of Green Revolution' in India?
A.
G. Paul
B.
Norman Borlaug
C.
Van Neil
D.
Dr. Mithchell
Ans:
Norman Borlaug
Explanation :
Norman Borlaug, an American biologist and humanitarian, is globally known as the Father of Green Revolution for introducing techniques that contributed to the extensive increases in agricultural production. He is credited with saving over a billion people worldwide from starvation. M. S. Swaminathan is known as "Indian Father of Green Revolution" for his leadership in introducing and further developing high-yielding varieties of wheat in India.
[17] The specific role of Vitamin K is in the synthesis of -
A.
Albumin.
B.
Antibodies
C.
Globulin
D.
Prothrombin
Ans:
Prothrombin
Explanation :
Vitamin K is a necessary participant in synthesis of several proteins that mediate both coagulation and anticoagulation. It is noteworthy for the synthesis of Prothrombin (coagulation factor II) that forms thrombin in the clotting process. Vitamin K is integrally involved in the clotting mechanism of blood.
[18] Increased RBC's in the blood leads to a condition called -
A.
Anemia
B.
Haemophilia
C.
Polycythemia
D.
Leukaemia
Ans:
Polycythemia
Explanation :
Polycythemia is an abnormally high concentration of hemoglobin in the blood through an increase in red cell numbers. People with this condition have thicker blood, which makes it harder for blood to circulate around the body. A relatively stable number of RBCs is maintained in the circulation by increasing or decreasing the rate of production by the bone marrow.
[19] 'Mendel' is known as -
A.
Father of Physiology
B.
Father of Geology
C.
Father of Genetics
D.
Father of Biology
Ans:
Father of Biology
Explanation :
Gregor Mendal is known as the 'Father of modern genetics.' Through his pea plant experiments conducted between 1856 and 1863, he discovered the fundamental laws of inheritance.
[20] What makes a reptile a reptile?
A.
Cold blooded
B.
Warm Blooded
C.
Non-Hearing
D.
Egg-laying
Ans:
Egg-laying
Explanation :
Reptile’s skin is covered with hard, dry scales and most reptiles lay eggs. Those animals which are cold- blooded don't automatically maintain a constant body temperature.
[21] Growing agricultural crops between rows of planted trees is known as -
A.
Social forestry
B.
Jhum
C.
Taunia system
D.
Agro forestry
Ans:
Taunia system
Explanation :
The Taungya system involves growing agricultural crops between rows of planted trees (sal, teak, etc). Along with jhum cultivation, it is one of the well-known systems of agro forestry programmes in practice in our country.
[22] Which of the following increases the rate of heart beat?
A.
Peripheral nerves
B.
Sympathetic nerves
C.
Parasympathetic nerves
D.
Cranial nerves
Ans:
Sympathetic nerves
Explanation :
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate.
[23] Riboflavin is a/an -
A.
Vitamin
B.
Hormone
C.
Fatty acid
D.
Enzyme
Ans:
Vitamin
Explanation :
Riboflavin, also known as vitamin B2, is one of the eight B-complex vitamins. It is a water-soluble vitamin that functions as a coenzyme, meaning that it is required for enzymes (proteins) to perform normal physiological actions. Riboflavin is found in milk, cheese, eggs, leaf vegetables, liver, kidneys, legumes, mushrooms, and almonds.
[24] Locomotory organ of a starfish is -
A.
Tube feet
B.
Paddle
C.
Muscular foot
D.
Flipper
Ans:
Tube feet
Explanation :
Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.
[25] Penicillin is extracted from -
A.
yeast
B.
algae
C.
fungus
D.
lichen
Ans:
fungus
Explanation :
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.
Explanation :
Vitamin K is a necessary participant in synthesis of several proteins that mediate both coagulation and anticoagulation. It is noteworthy for the synthesis of Prothrombin (coagulation factor II) that forms thrombin in the clotting process. Vitamin K is integrally involved in the clotting mechanism of blood.
[18] Increased RBC's in the blood leads to a condition called -
A.
Anemia
B.
Haemophilia
C.
Polycythemia
D.
Leukaemia
Ans:
Polycythemia
Explanation :
Polycythemia is an abnormally high concentration of hemoglobin in the blood through an increase in red cell numbers. People with this condition have thicker blood, which makes it harder for blood to circulate around the body. A relatively stable number of RBCs is maintained in the circulation by increasing or decreasing the rate of production by the bone marrow.
[19] 'Mendel' is known as -
A.
Father of Physiology
B.
Father of Geology
C.
Father of Genetics
D.
Father of Biology
Ans:
Father of Biology
Explanation :
Gregor Mendal is known as the 'Father of modern genetics.' Through his pea plant experiments conducted between 1856 and 1863, he discovered the fundamental laws of inheritance.
[20] What makes a reptile a reptile?
A.
Cold blooded
B.
Warm Blooded
C.
Non-Hearing
D.
Egg-laying
Ans:
Egg-laying
Explanation :
Reptile’s skin is covered with hard, dry scales and most reptiles lay eggs. Those animals which are cold- blooded don't automatically maintain a constant body temperature.
[21] Growing agricultural crops between rows of planted trees is known as -
A.
Social forestry
B.
Jhum
C.
Taunia system
D.
Agro forestry
Ans:
Taunia system
Explanation :
The Taungya system involves growing agricultural crops between rows of planted trees (sal, teak, etc). Along with jhum cultivation, it is one of the well-known systems of agro forestry programmes in practice in our country.
[22] Which of the following increases the rate of heart beat?
A.
Peripheral nerves
B.
Sympathetic nerves
C.
Parasympathetic nerves
D.
Cranial nerves
Ans:
Sympathetic nerves
Explanation :
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate.
[23] Riboflavin is a/an -
A.
Vitamin
B.
Hormone
C.
Fatty acid
D.
Enzyme
Ans:
Vitamin
Explanation :
Riboflavin, also known as vitamin B2, is one of the eight B-complex vitamins. It is a water-soluble vitamin that functions as a coenzyme, meaning that it is required for enzymes (proteins) to perform normal physiological actions. Riboflavin is found in milk, cheese, eggs, leaf vegetables, liver, kidneys, legumes, mushrooms, and almonds.
[24] Locomotory organ of a starfish is -
A.
Tube feet
B.
Paddle
C.
Muscular foot
D.
Flipper
Ans:
Tube feet
Explanation :
Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.
[25] Penicillin is extracted from -
A.
yeast
B.
algae
C.
fungus
D.
lichen
Ans:
fungus
Explanation :
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.
Explanation :
Gregor Mendal is known as the 'Father of modern genetics.' Through his pea plant experiments conducted between 1856 and 1863, he discovered the fundamental laws of inheritance.
[20] What makes a reptile a reptile?
A.
Cold blooded
B.
Warm Blooded
C.
Non-Hearing
D.
Egg-laying
Ans:
Egg-laying
Explanation :
Reptile’s skin is covered with hard, dry scales and most reptiles lay eggs. Those animals which are cold- blooded don't automatically maintain a constant body temperature.
[21] Growing agricultural crops between rows of planted trees is known as -
A.
Social forestry
B.
Jhum
C.
Taunia system
D.
Agro forestry
Ans:
Taunia system
Explanation :
The Taungya system involves growing agricultural crops between rows of planted trees (sal, teak, etc). Along with jhum cultivation, it is one of the well-known systems of agro forestry programmes in practice in our country.
[22] Which of the following increases the rate of heart beat?
A.
Peripheral nerves
B.
Sympathetic nerves
C.
Parasympathetic nerves
D.
Cranial nerves
Ans:
Sympathetic nerves
Explanation :
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate.
[23] Riboflavin is a/an -
A.
Vitamin
B.
Hormone
C.
Fatty acid
D.
Enzyme
Ans:
Vitamin
Explanation :
Riboflavin, also known as vitamin B2, is one of the eight B-complex vitamins. It is a water-soluble vitamin that functions as a coenzyme, meaning that it is required for enzymes (proteins) to perform normal physiological actions. Riboflavin is found in milk, cheese, eggs, leaf vegetables, liver, kidneys, legumes, mushrooms, and almonds.
[24] Locomotory organ of a starfish is -
A.
Tube feet
B.
Paddle
C.
Muscular foot
D.
Flipper
Ans:
Tube feet
Explanation :
Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.
[25] Penicillin is extracted from -
A.
yeast
B.
algae
C.
fungus
D.
lichen
Ans:
fungus
Explanation :
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.
Explanation :
The Taungya system involves growing agricultural crops between rows of planted trees (sal, teak, etc). Along with jhum cultivation, it is one of the well-known systems of agro forestry programmes in practice in our country.
[22] Which of the following increases the rate of heart beat?
A.
Peripheral nerves
B.
Sympathetic nerves
C.
Parasympathetic nerves
D.
Cranial nerves
Ans:
Sympathetic nerves
Explanation :
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate.
[23] Riboflavin is a/an -
A.
Vitamin
B.
Hormone
C.
Fatty acid
D.
Enzyme
Ans:
Vitamin
Explanation :
Riboflavin, also known as vitamin B2, is one of the eight B-complex vitamins. It is a water-soluble vitamin that functions as a coenzyme, meaning that it is required for enzymes (proteins) to perform normal physiological actions. Riboflavin is found in milk, cheese, eggs, leaf vegetables, liver, kidneys, legumes, mushrooms, and almonds.
[24] Locomotory organ of a starfish is -
A.
Tube feet
B.
Paddle
C.
Muscular foot
D.
Flipper
Ans:
Tube feet
Explanation :
Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.
[25] Penicillin is extracted from -
A.
yeast
B.
algae
C.
fungus
D.
lichen
Ans:
fungus
Explanation :
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.
Explanation :
Riboflavin, also known as vitamin B2, is one of the eight B-complex vitamins. It is a water-soluble vitamin that functions as a coenzyme, meaning that it is required for enzymes (proteins) to perform normal physiological actions. Riboflavin is found in milk, cheese, eggs, leaf vegetables, liver, kidneys, legumes, mushrooms, and almonds.
[24] Locomotory organ of a starfish is -
A.
Tube feet
B.
Paddle
C.
Muscular foot
D.
Flipper
Ans:
Tube feet
Explanation :
Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.
[25] Penicillin is extracted from -
A.
yeast
B.
algae
C.
fungus
D.
lichen
Ans:
fungus
Explanation :
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.
Explanation :
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when growth of the fungus is inhibited by stress.