[1] Rabies is caused by -
A.
bacteria
B.
virus
C.
fungus
D.
algae
Ans:
virus
Explanation :
Rabies is a viral disease that causes acute encephalitis in warm-blooded animals. The disease is zoonotic, meaning it can be transmitted from one species to another, such as from dogs to humans, commonly by a bite from an infected animal.
[2] fiber is used in making bulletproof vests.
A.
Nylon-66
B.
Terylene
C.
Kevlar
D.
Lexan
Ans:
Kevlar
Explanation :
Kevlar is a liquid polymer which can be spun into fibre and woven into cloth. Kevlar was developed for tyres and, later, for ropes, gaskets and various parts of planes and boats. The efficacy of the material led to its usage for the manufacture of bulletproof jackets.
[3] Which part of the tea plant is used for making tea?
A.
root
B.
flower
C.
Leaves
D.
Stem
Ans:
Leaves
Explanation :
The tea plant is an evergreen of the Camellia family that is local to China, Tibet, and northern India. Tea is an aromatic beverage commonly prepared by pouring hot or boiling water over cured leaves of the Camellia sinensis.
[4] Which one of the following is not a true fish?
A.
Shark
B.
Starfish
C.
Eel
D.
Sea-horse
Ans:
Starfish
Explanation :
Although sea stars (star fish) live underwater and are commonly called "starfish," they are not fish. They do not have gills, scales, or fins like fish do and they move quite differently from fish. While fish propel themselves with their tails, sea stars have tiny tube feet to help them move along.
[5] Which virus from the following combinations is contagious for human beings -
A.
H5N1
B.
H2N3
C.
H4N1
D.
H4N2
Ans:
H5N1
Explanation :
A bird-adapted strain of H5N1, called HPAI A(H5N1) for "highly pathogenic avian influenza virus of type A of subtype H5N1", is the causative agent of H5N1 flu, commonly known as "avian influenza" or "Avian flu". H5N1 may mutate or reassort into a strain capable of efficient human-to-human transmission.
[6] Cuscuta is a -
A.
partial stern parasite
B.
complete stem parasite
C.
partial root parasite
D.
complete root parasite
Ans:
complete stem parasite
Explanation :
Cuscuta (Dodder) is a genus of about 100-170 species of yellow, orange or red (rarely green) parasitic plants. Dodders are supremely adapted for a life of plunder and pillage. Reduced in form to scrambling and twining threads, they appear to be completely leafless, although closer inspection reveals tiny scale leaves pressed close to the stems. So it is a stern parasite.
[7] The element which is required by the plant in large quantity -
A.
Calcium
B.
Nitrogen
C.
Phosphorus
D.
Sulphur
Ans:
Nitrogen
Explanation :
All plants need nitrogen to make amino acids, proteins and DNA, but the nitrogen in the atmosphere is not in a form that they can use. Plants use nitrogen by absorbing either nitrate or ammonium through the roots.
[8] Which one of the following gives energy to our body?
A.
Vitamins
B.
Water
C.
Carbohydrates
D.
Proteins
Ans:
Carbohydrates
Explanation :
Carbohydrates are the body's preferred energy source. One of the advantages of glucose and other carbohydrates is that they can enter into the oxidation process much more quickly and provide energy more rapidly. Fats make energy available at a slower pace than carbohydrates.
[9] Which of the following is used for wrapping of fractured bones?
A.
White cement
B.
White lead
C.
Zinc oxide
D.
Plaster of Paris
Ans:
Plaster of Paris
Explanation :
Plaster of Paris is a plaster made by calcining gypsum. It can be used to impregnate gauze bandages to make a sculpting material called modroc. It is used similarly to clay, as it is easily shaped when wet, yet sets into a resilient and lightweight structure. This is the material which was (and sometimes still is) used to make classic plaster orthopedic casts to protect limbs with broken bones.
[10] Which one of the following is a water borne disease?
A.
Diabetes
B.
Cholera
C.
Small Pox
D.
Malaria
Ans:
Cholera
Explanation :
Cholera is an infection in the small intestine caused by the bacterium Vibrio cholerae. Transmission occurs primarily by drinking water or eating food that has been contaminated by the feces of an infected person, including one with no apparent symptoms.
[11] The coding segment of DNA is called in -
A.
Codon
B.
Muton
C.
Intron
D.
Exon
Ans:
Codon
Explanation :
The genetic code by which DNA stores the genetic information consists of "codons" of three nucleotides. The functional segments of DNA which code for the transfer of genetic information are called genes. A colon is defined by the initial nucleotide from which translation starts.
[12] Mercury poisoning in man causes the disease -
A.
Black lung
B.
Arsenicosis
C.
Minamata
D.
Tai-Etai
Ans:
Minamata
Explanation :
Minamata disease is a neurological syndrome caused by severe mercury poisoning. It was first discovered in Minamata city in Kumamoto prefecture, Japan, in 1956
[13] Chromosomes consist of -
A.
DNA and lipids
B.
RNA and amino acids
C.
DNA and proteins
D.
RNA and sugar
Ans:
DNA and proteins
Explanation :
A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions.
[14] Which one of the following organs converts glycogen into glucose and purifies the blood?
A.
Liver
B.
Kidney
C.
Lungs
D.
Spleen
Ans:
Liver
Explanation :
Liver produces bile which is stored in the gall bladder. Liver is the largest gland in the body.
[15] Absence of fish along a river indicates -
A.
Zone of degradation
B.
Zone of active decomposition
C.
All zones of pollution
D.
Zone of recovery
Ans:
Zone of degradation
Explanation :
Absence of fish along a river indicates zone of degradation.
[16] Which of the following is not an endocrine gland?
A.
Pituitary
B.
Thyroid
C.
Adrenal
D.
Spleen
Ans:
Spleen
Explanation :
The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system. Old red blood cells are recycled in the spleen, and platelets and white blood cells are stored there. The spleen also helps fight certain kinds of bacteria that cause pneumonia and meningitis.
[17] Which of the following is an insectivorous plant?
A.
Balanophora
B.
Rafflesia
C.
Orobanche
D.
Drosera
Ans:
Drosera
Explanation :
An insectivorous plant, also called a carnivorous plant, captures prey items, such as insects, spiders, Crustaceans, mites, and protozoans, as a nitrogen source. Aldrovanda, Dionaea, Drosera, Drosophyllum, etc are some of them under the Droseraceae family.
[18] Seed dormancy is regulated by -
A.
Abscisic acid
B.
Gibberellic acid
C.
Indole acetic acid
D.
Ethylene
Ans:
Abscisic acid
Explanation :
The transition from dormancy to germination in seeds is a key physiological process during the lifecycle of plants. Abscisic acid (ABA) is the sole plant hormone known to maintain seed dormancy. It acts through a gene expression network involving the transcription factor ABSCISIC ACID INSENSITIVE 3 (ABI3).
[19] The process through which excess of light energy is dissipated in photosynthesis is known as -
A.
Quenching
B.
Scavenging
C.
Photolysis
D.
Photophosphatylation
Ans:
Quenching
Explanation :
Quenching is a process in which absorbed light energy is dissipated as heat and does not take part in photochemistry. The phenomenon involves quenching of chlorophyll a (Chla) fluorescence, which is induced under steady-state illumination.
[20] AIDS virus destroys -
A.
Lymphocytes
B.
Monocytes
C.
Neutrophils
D.
Basophils
Ans:
Lymphocytes
Explanation :
AIDS virus destroys the T-cells inside of the immune system. T cells or T lymphocytes belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity.
[21] Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills?
A.
Pseudomonas
B.
Agrobacterium
C.
Clostridium
D.
Nitrosomonas
Ans:
Nitrosomonas
Explanation :
Nitrosomonas is a genus comprising rod shaped chemoautotrophic bacteria. This rare bacteria oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in treatment of industrial and sewage waste and in the process of bioremediation.
[22] Thiamidine dimer formation in DNA is caused by -
A.
IR-rays
B.
X-rays
C.
b and g-rays
D.
UV-rays
Ans:
UV-rays
Explanation :
When cells are exposed to sunlight, radiant energy damage the DNA. For example, ultraviolet irradiation causes covalent bond formation between adjacent thymines on the same strand of DNA. Ultraviolet light is absorbed by a double bond in thymine and cytosine bases in DNA. This added energy opens up the bond and allows it to react with a neighboring base.
[23] One of the following excretes uric acid as its excretory product -
A.
Amoeba
B.
Tilapia
C.
Sparrow
D.
Camel
Ans:
Sparrow
Explanation :
Sparrow excretes uric acid as its excretory product.
[24] Smut of wheat is mused by -
A.
Ustilago maydis
B.
Puccinia graminis
C.
Ustilago tritici
D.
Colletotrichum falcatum
Ans:
Ustilago tritici
Explanation :
Loose smut is a seedborne disease that is caused by the fungus Ustilago tritici. The fungus that causes loose smut survives as dormant mycelia within the embryo of an infected wheat seed. When the seed germinates, the fungus becomes active again.
[25] Which of the following is an endangered species?
A.
Black buck
B.
Blue sheep
C.
Gangetic dolphin
D.
Mithun
Ans:
Blue sheep
Explanation :
According to the Red list of 2012, Ganges River Dolphin is one of critically endangered species in India. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.
Explanation :
Rabies is a viral disease that causes acute encephalitis in warm-blooded animals. The disease is zoonotic, meaning it can be transmitted from one species to another, such as from dogs to humans, commonly by a bite from an infected animal.
[2] fiber is used in making bulletproof vests.
A.
Nylon-66
B.
Terylene
C.
Kevlar
D.
Lexan
Ans:
Kevlar
Explanation :
Kevlar is a liquid polymer which can be spun into fibre and woven into cloth. Kevlar was developed for tyres and, later, for ropes, gaskets and various parts of planes and boats. The efficacy of the material led to its usage for the manufacture of bulletproof jackets.
[3] Which part of the tea plant is used for making tea?
A.
root
B.
flower
C.
Leaves
D.
Stem
Ans:
Leaves
Explanation :
The tea plant is an evergreen of the Camellia family that is local to China, Tibet, and northern India. Tea is an aromatic beverage commonly prepared by pouring hot or boiling water over cured leaves of the Camellia sinensis.
[4] Which one of the following is not a true fish?
A.
Shark
B.
Starfish
C.
Eel
D.
Sea-horse
Ans:
Starfish
Explanation :
Although sea stars (star fish) live underwater and are commonly called "starfish," they are not fish. They do not have gills, scales, or fins like fish do and they move quite differently from fish. While fish propel themselves with their tails, sea stars have tiny tube feet to help them move along.
[5] Which virus from the following combinations is contagious for human beings -
A.
H5N1
B.
H2N3
C.
H4N1
D.
H4N2
Ans:
H5N1
Explanation :
A bird-adapted strain of H5N1, called HPAI A(H5N1) for "highly pathogenic avian influenza virus of type A of subtype H5N1", is the causative agent of H5N1 flu, commonly known as "avian influenza" or "Avian flu". H5N1 may mutate or reassort into a strain capable of efficient human-to-human transmission.
[6] Cuscuta is a -
A.
partial stern parasite
B.
complete stem parasite
C.
partial root parasite
D.
complete root parasite
Ans:
complete stem parasite
Explanation :
Cuscuta (Dodder) is a genus of about 100-170 species of yellow, orange or red (rarely green) parasitic plants. Dodders are supremely adapted for a life of plunder and pillage. Reduced in form to scrambling and twining threads, they appear to be completely leafless, although closer inspection reveals tiny scale leaves pressed close to the stems. So it is a stern parasite.
[7] The element which is required by the plant in large quantity -
A.
Calcium
B.
Nitrogen
C.
Phosphorus
D.
Sulphur
Ans:
Nitrogen
Explanation :
All plants need nitrogen to make amino acids, proteins and DNA, but the nitrogen in the atmosphere is not in a form that they can use. Plants use nitrogen by absorbing either nitrate or ammonium through the roots.
[8] Which one of the following gives energy to our body?
A.
Vitamins
B.
Water
C.
Carbohydrates
D.
Proteins
Ans:
Carbohydrates
Explanation :
Carbohydrates are the body's preferred energy source. One of the advantages of glucose and other carbohydrates is that they can enter into the oxidation process much more quickly and provide energy more rapidly. Fats make energy available at a slower pace than carbohydrates.
[9] Which of the following is used for wrapping of fractured bones?
A.
White cement
B.
White lead
C.
Zinc oxide
D.
Plaster of Paris
Ans:
Plaster of Paris
Explanation :
Plaster of Paris is a plaster made by calcining gypsum. It can be used to impregnate gauze bandages to make a sculpting material called modroc. It is used similarly to clay, as it is easily shaped when wet, yet sets into a resilient and lightweight structure. This is the material which was (and sometimes still is) used to make classic plaster orthopedic casts to protect limbs with broken bones.
[10] Which one of the following is a water borne disease?
A.
Diabetes
B.
Cholera
C.
Small Pox
D.
Malaria
Ans:
Cholera
Explanation :
Cholera is an infection in the small intestine caused by the bacterium Vibrio cholerae. Transmission occurs primarily by drinking water or eating food that has been contaminated by the feces of an infected person, including one with no apparent symptoms.
[11] The coding segment of DNA is called in -
A.
Codon
B.
Muton
C.
Intron
D.
Exon
Ans:
Codon
Explanation :
The genetic code by which DNA stores the genetic information consists of "codons" of three nucleotides. The functional segments of DNA which code for the transfer of genetic information are called genes. A colon is defined by the initial nucleotide from which translation starts.
[12] Mercury poisoning in man causes the disease -
A.
Black lung
B.
Arsenicosis
C.
Minamata
D.
Tai-Etai
Ans:
Minamata
Explanation :
Minamata disease is a neurological syndrome caused by severe mercury poisoning. It was first discovered in Minamata city in Kumamoto prefecture, Japan, in 1956
[13] Chromosomes consist of -
A.
DNA and lipids
B.
RNA and amino acids
C.
DNA and proteins
D.
RNA and sugar
Ans:
DNA and proteins
Explanation :
A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions.
[14] Which one of the following organs converts glycogen into glucose and purifies the blood?
A.
Liver
B.
Kidney
C.
Lungs
D.
Spleen
Ans:
Liver
Explanation :
Liver produces bile which is stored in the gall bladder. Liver is the largest gland in the body.
[15] Absence of fish along a river indicates -
A.
Zone of degradation
B.
Zone of active decomposition
C.
All zones of pollution
D.
Zone of recovery
Ans:
Zone of degradation
Explanation :
Absence of fish along a river indicates zone of degradation.
[16] Which of the following is not an endocrine gland?
A.
Pituitary
B.
Thyroid
C.
Adrenal
D.
Spleen
Ans:
Spleen
Explanation :
The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system. Old red blood cells are recycled in the spleen, and platelets and white blood cells are stored there. The spleen also helps fight certain kinds of bacteria that cause pneumonia and meningitis.
[17] Which of the following is an insectivorous plant?
A.
Balanophora
B.
Rafflesia
C.
Orobanche
D.
Drosera
Ans:
Drosera
Explanation :
An insectivorous plant, also called a carnivorous plant, captures prey items, such as insects, spiders, Crustaceans, mites, and protozoans, as a nitrogen source. Aldrovanda, Dionaea, Drosera, Drosophyllum, etc are some of them under the Droseraceae family.
[18] Seed dormancy is regulated by -
A.
Abscisic acid
B.
Gibberellic acid
C.
Indole acetic acid
D.
Ethylene
Ans:
Abscisic acid
Explanation :
The transition from dormancy to germination in seeds is a key physiological process during the lifecycle of plants. Abscisic acid (ABA) is the sole plant hormone known to maintain seed dormancy. It acts through a gene expression network involving the transcription factor ABSCISIC ACID INSENSITIVE 3 (ABI3).
[19] The process through which excess of light energy is dissipated in photosynthesis is known as -
A.
Quenching
B.
Scavenging
C.
Photolysis
D.
Photophosphatylation
Ans:
Quenching
Explanation :
Quenching is a process in which absorbed light energy is dissipated as heat and does not take part in photochemistry. The phenomenon involves quenching of chlorophyll a (Chla) fluorescence, which is induced under steady-state illumination.
[20] AIDS virus destroys -
A.
Lymphocytes
B.
Monocytes
C.
Neutrophils
D.
Basophils
Ans:
Lymphocytes
Explanation :
AIDS virus destroys the T-cells inside of the immune system. T cells or T lymphocytes belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity.
[21] Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills?
A.
Pseudomonas
B.
Agrobacterium
C.
Clostridium
D.
Nitrosomonas
Ans:
Nitrosomonas
Explanation :
Nitrosomonas is a genus comprising rod shaped chemoautotrophic bacteria. This rare bacteria oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in treatment of industrial and sewage waste and in the process of bioremediation.
[22] Thiamidine dimer formation in DNA is caused by -
A.
IR-rays
B.
X-rays
C.
b and g-rays
D.
UV-rays
Ans:
UV-rays
Explanation :
When cells are exposed to sunlight, radiant energy damage the DNA. For example, ultraviolet irradiation causes covalent bond formation between adjacent thymines on the same strand of DNA. Ultraviolet light is absorbed by a double bond in thymine and cytosine bases in DNA. This added energy opens up the bond and allows it to react with a neighboring base.
[23] One of the following excretes uric acid as its excretory product -
A.
Amoeba
B.
Tilapia
C.
Sparrow
D.
Camel
Ans:
Sparrow
Explanation :
Sparrow excretes uric acid as its excretory product.
[24] Smut of wheat is mused by -
A.
Ustilago maydis
B.
Puccinia graminis
C.
Ustilago tritici
D.
Colletotrichum falcatum
Ans:
Ustilago tritici
Explanation :
Loose smut is a seedborne disease that is caused by the fungus Ustilago tritici. The fungus that causes loose smut survives as dormant mycelia within the embryo of an infected wheat seed. When the seed germinates, the fungus becomes active again.
[25] Which of the following is an endangered species?
A.
Black buck
B.
Blue sheep
C.
Gangetic dolphin
D.
Mithun
Ans:
Blue sheep
Explanation :
According to the Red list of 2012, Ganges River Dolphin is one of critically endangered species in India. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.
Explanation :
The tea plant is an evergreen of the Camellia family that is local to China, Tibet, and northern India. Tea is an aromatic beverage commonly prepared by pouring hot or boiling water over cured leaves of the Camellia sinensis.
[4] Which one of the following is not a true fish?
A.
Shark
B.
Starfish
C.
Eel
D.
Sea-horse
Ans:
Starfish
Explanation :
Although sea stars (star fish) live underwater and are commonly called "starfish," they are not fish. They do not have gills, scales, or fins like fish do and they move quite differently from fish. While fish propel themselves with their tails, sea stars have tiny tube feet to help them move along.
[5] Which virus from the following combinations is contagious for human beings -
A.
H5N1
B.
H2N3
C.
H4N1
D.
H4N2
Ans:
H5N1
Explanation :
A bird-adapted strain of H5N1, called HPAI A(H5N1) for "highly pathogenic avian influenza virus of type A of subtype H5N1", is the causative agent of H5N1 flu, commonly known as "avian influenza" or "Avian flu". H5N1 may mutate or reassort into a strain capable of efficient human-to-human transmission.
[6] Cuscuta is a -
A.
partial stern parasite
B.
complete stem parasite
C.
partial root parasite
D.
complete root parasite
Ans:
complete stem parasite
Explanation :
Cuscuta (Dodder) is a genus of about 100-170 species of yellow, orange or red (rarely green) parasitic plants. Dodders are supremely adapted for a life of plunder and pillage. Reduced in form to scrambling and twining threads, they appear to be completely leafless, although closer inspection reveals tiny scale leaves pressed close to the stems. So it is a stern parasite.
[7] The element which is required by the plant in large quantity -
A.
Calcium
B.
Nitrogen
C.
Phosphorus
D.
Sulphur
Ans:
Nitrogen
Explanation :
All plants need nitrogen to make amino acids, proteins and DNA, but the nitrogen in the atmosphere is not in a form that they can use. Plants use nitrogen by absorbing either nitrate or ammonium through the roots.
[8] Which one of the following gives energy to our body?
A.
Vitamins
B.
Water
C.
Carbohydrates
D.
Proteins
Ans:
Carbohydrates
Explanation :
Carbohydrates are the body's preferred energy source. One of the advantages of glucose and other carbohydrates is that they can enter into the oxidation process much more quickly and provide energy more rapidly. Fats make energy available at a slower pace than carbohydrates.
[9] Which of the following is used for wrapping of fractured bones?
A.
White cement
B.
White lead
C.
Zinc oxide
D.
Plaster of Paris
Ans:
Plaster of Paris
Explanation :
Plaster of Paris is a plaster made by calcining gypsum. It can be used to impregnate gauze bandages to make a sculpting material called modroc. It is used similarly to clay, as it is easily shaped when wet, yet sets into a resilient and lightweight structure. This is the material which was (and sometimes still is) used to make classic plaster orthopedic casts to protect limbs with broken bones.
[10] Which one of the following is a water borne disease?
A.
Diabetes
B.
Cholera
C.
Small Pox
D.
Malaria
Ans:
Cholera
Explanation :
Cholera is an infection in the small intestine caused by the bacterium Vibrio cholerae. Transmission occurs primarily by drinking water or eating food that has been contaminated by the feces of an infected person, including one with no apparent symptoms.
[11] The coding segment of DNA is called in -
A.
Codon
B.
Muton
C.
Intron
D.
Exon
Ans:
Codon
Explanation :
The genetic code by which DNA stores the genetic information consists of "codons" of three nucleotides. The functional segments of DNA which code for the transfer of genetic information are called genes. A colon is defined by the initial nucleotide from which translation starts.
[12] Mercury poisoning in man causes the disease -
A.
Black lung
B.
Arsenicosis
C.
Minamata
D.
Tai-Etai
Ans:
Minamata
Explanation :
Minamata disease is a neurological syndrome caused by severe mercury poisoning. It was first discovered in Minamata city in Kumamoto prefecture, Japan, in 1956
[13] Chromosomes consist of -
A.
DNA and lipids
B.
RNA and amino acids
C.
DNA and proteins
D.
RNA and sugar
Ans:
DNA and proteins
Explanation :
A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions.
[14] Which one of the following organs converts glycogen into glucose and purifies the blood?
A.
Liver
B.
Kidney
C.
Lungs
D.
Spleen
Ans:
Liver
Explanation :
Liver produces bile which is stored in the gall bladder. Liver is the largest gland in the body.
[15] Absence of fish along a river indicates -
A.
Zone of degradation
B.
Zone of active decomposition
C.
All zones of pollution
D.
Zone of recovery
Ans:
Zone of degradation
Explanation :
Absence of fish along a river indicates zone of degradation.
[16] Which of the following is not an endocrine gland?
A.
Pituitary
B.
Thyroid
C.
Adrenal
D.
Spleen
Ans:
Spleen
Explanation :
The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system. Old red blood cells are recycled in the spleen, and platelets and white blood cells are stored there. The spleen also helps fight certain kinds of bacteria that cause pneumonia and meningitis.
[17] Which of the following is an insectivorous plant?
A.
Balanophora
B.
Rafflesia
C.
Orobanche
D.
Drosera
Ans:
Drosera
Explanation :
An insectivorous plant, also called a carnivorous plant, captures prey items, such as insects, spiders, Crustaceans, mites, and protozoans, as a nitrogen source. Aldrovanda, Dionaea, Drosera, Drosophyllum, etc are some of them under the Droseraceae family.
[18] Seed dormancy is regulated by -
A.
Abscisic acid
B.
Gibberellic acid
C.
Indole acetic acid
D.
Ethylene
Ans:
Abscisic acid
Explanation :
The transition from dormancy to germination in seeds is a key physiological process during the lifecycle of plants. Abscisic acid (ABA) is the sole plant hormone known to maintain seed dormancy. It acts through a gene expression network involving the transcription factor ABSCISIC ACID INSENSITIVE 3 (ABI3).
[19] The process through which excess of light energy is dissipated in photosynthesis is known as -
A.
Quenching
B.
Scavenging
C.
Photolysis
D.
Photophosphatylation
Ans:
Quenching
Explanation :
Quenching is a process in which absorbed light energy is dissipated as heat and does not take part in photochemistry. The phenomenon involves quenching of chlorophyll a (Chla) fluorescence, which is induced under steady-state illumination.
[20] AIDS virus destroys -
A.
Lymphocytes
B.
Monocytes
C.
Neutrophils
D.
Basophils
Ans:
Lymphocytes
Explanation :
AIDS virus destroys the T-cells inside of the immune system. T cells or T lymphocytes belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity.
[21] Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills?
A.
Pseudomonas
B.
Agrobacterium
C.
Clostridium
D.
Nitrosomonas
Ans:
Nitrosomonas
Explanation :
Nitrosomonas is a genus comprising rod shaped chemoautotrophic bacteria. This rare bacteria oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in treatment of industrial and sewage waste and in the process of bioremediation.
[22] Thiamidine dimer formation in DNA is caused by -
A.
IR-rays
B.
X-rays
C.
b and g-rays
D.
UV-rays
Ans:
UV-rays
Explanation :
When cells are exposed to sunlight, radiant energy damage the DNA. For example, ultraviolet irradiation causes covalent bond formation between adjacent thymines on the same strand of DNA. Ultraviolet light is absorbed by a double bond in thymine and cytosine bases in DNA. This added energy opens up the bond and allows it to react with a neighboring base.
[23] One of the following excretes uric acid as its excretory product -
A.
Amoeba
B.
Tilapia
C.
Sparrow
D.
Camel
Ans:
Sparrow
Explanation :
Sparrow excretes uric acid as its excretory product.
[24] Smut of wheat is mused by -
A.
Ustilago maydis
B.
Puccinia graminis
C.
Ustilago tritici
D.
Colletotrichum falcatum
Ans:
Ustilago tritici
Explanation :
Loose smut is a seedborne disease that is caused by the fungus Ustilago tritici. The fungus that causes loose smut survives as dormant mycelia within the embryo of an infected wheat seed. When the seed germinates, the fungus becomes active again.
[25] Which of the following is an endangered species?
A.
Black buck
B.
Blue sheep
C.
Gangetic dolphin
D.
Mithun
Ans:
Blue sheep
Explanation :
According to the Red list of 2012, Ganges River Dolphin is one of critically endangered species in India. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.
Explanation :
A bird-adapted strain of H5N1, called HPAI A(H5N1) for "highly pathogenic avian influenza virus of type A of subtype H5N1", is the causative agent of H5N1 flu, commonly known as "avian influenza" or "Avian flu". H5N1 may mutate or reassort into a strain capable of efficient human-to-human transmission.
[6] Cuscuta is a -
A.
partial stern parasite
B.
complete stem parasite
C.
partial root parasite
D.
complete root parasite
Ans:
complete stem parasite
Explanation :
Cuscuta (Dodder) is a genus of about 100-170 species of yellow, orange or red (rarely green) parasitic plants. Dodders are supremely adapted for a life of plunder and pillage. Reduced in form to scrambling and twining threads, they appear to be completely leafless, although closer inspection reveals tiny scale leaves pressed close to the stems. So it is a stern parasite.
[7] The element which is required by the plant in large quantity -
A.
Calcium
B.
Nitrogen
C.
Phosphorus
D.
Sulphur
Ans:
Nitrogen
Explanation :
All plants need nitrogen to make amino acids, proteins and DNA, but the nitrogen in the atmosphere is not in a form that they can use. Plants use nitrogen by absorbing either nitrate or ammonium through the roots.
[8] Which one of the following gives energy to our body?
A.
Vitamins
B.
Water
C.
Carbohydrates
D.
Proteins
Ans:
Carbohydrates
Explanation :
Carbohydrates are the body's preferred energy source. One of the advantages of glucose and other carbohydrates is that they can enter into the oxidation process much more quickly and provide energy more rapidly. Fats make energy available at a slower pace than carbohydrates.
[9] Which of the following is used for wrapping of fractured bones?
A.
White cement
B.
White lead
C.
Zinc oxide
D.
Plaster of Paris
Ans:
Plaster of Paris
Explanation :
Plaster of Paris is a plaster made by calcining gypsum. It can be used to impregnate gauze bandages to make a sculpting material called modroc. It is used similarly to clay, as it is easily shaped when wet, yet sets into a resilient and lightweight structure. This is the material which was (and sometimes still is) used to make classic plaster orthopedic casts to protect limbs with broken bones.
[10] Which one of the following is a water borne disease?
A.
Diabetes
B.
Cholera
C.
Small Pox
D.
Malaria
Ans:
Cholera
Explanation :
Cholera is an infection in the small intestine caused by the bacterium Vibrio cholerae. Transmission occurs primarily by drinking water or eating food that has been contaminated by the feces of an infected person, including one with no apparent symptoms.
[11] The coding segment of DNA is called in -
A.
Codon
B.
Muton
C.
Intron
D.
Exon
Ans:
Codon
Explanation :
The genetic code by which DNA stores the genetic information consists of "codons" of three nucleotides. The functional segments of DNA which code for the transfer of genetic information are called genes. A colon is defined by the initial nucleotide from which translation starts.
[12] Mercury poisoning in man causes the disease -
A.
Black lung
B.
Arsenicosis
C.
Minamata
D.
Tai-Etai
Ans:
Minamata
Explanation :
Minamata disease is a neurological syndrome caused by severe mercury poisoning. It was first discovered in Minamata city in Kumamoto prefecture, Japan, in 1956
[13] Chromosomes consist of -
A.
DNA and lipids
B.
RNA and amino acids
C.
DNA and proteins
D.
RNA and sugar
Ans:
DNA and proteins
Explanation :
A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions.
[14] Which one of the following organs converts glycogen into glucose and purifies the blood?
A.
Liver
B.
Kidney
C.
Lungs
D.
Spleen
Ans:
Liver
Explanation :
Liver produces bile which is stored in the gall bladder. Liver is the largest gland in the body.
[15] Absence of fish along a river indicates -
A.
Zone of degradation
B.
Zone of active decomposition
C.
All zones of pollution
D.
Zone of recovery
Ans:
Zone of degradation
Explanation :
Absence of fish along a river indicates zone of degradation.
[16] Which of the following is not an endocrine gland?
A.
Pituitary
B.
Thyroid
C.
Adrenal
D.
Spleen
Ans:
Spleen
Explanation :
The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system. Old red blood cells are recycled in the spleen, and platelets and white blood cells are stored there. The spleen also helps fight certain kinds of bacteria that cause pneumonia and meningitis.
[17] Which of the following is an insectivorous plant?
A.
Balanophora
B.
Rafflesia
C.
Orobanche
D.
Drosera
Ans:
Drosera
Explanation :
An insectivorous plant, also called a carnivorous plant, captures prey items, such as insects, spiders, Crustaceans, mites, and protozoans, as a nitrogen source. Aldrovanda, Dionaea, Drosera, Drosophyllum, etc are some of them under the Droseraceae family.
[18] Seed dormancy is regulated by -
A.
Abscisic acid
B.
Gibberellic acid
C.
Indole acetic acid
D.
Ethylene
Ans:
Abscisic acid
Explanation :
The transition from dormancy to germination in seeds is a key physiological process during the lifecycle of plants. Abscisic acid (ABA) is the sole plant hormone known to maintain seed dormancy. It acts through a gene expression network involving the transcription factor ABSCISIC ACID INSENSITIVE 3 (ABI3).
[19] The process through which excess of light energy is dissipated in photosynthesis is known as -
A.
Quenching
B.
Scavenging
C.
Photolysis
D.
Photophosphatylation
Ans:
Quenching
Explanation :
Quenching is a process in which absorbed light energy is dissipated as heat and does not take part in photochemistry. The phenomenon involves quenching of chlorophyll a (Chla) fluorescence, which is induced under steady-state illumination.
[20] AIDS virus destroys -
A.
Lymphocytes
B.
Monocytes
C.
Neutrophils
D.
Basophils
Ans:
Lymphocytes
Explanation :
AIDS virus destroys the T-cells inside of the immune system. T cells or T lymphocytes belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity.
[21] Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills?
A.
Pseudomonas
B.
Agrobacterium
C.
Clostridium
D.
Nitrosomonas
Ans:
Nitrosomonas
Explanation :
Nitrosomonas is a genus comprising rod shaped chemoautotrophic bacteria. This rare bacteria oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in treatment of industrial and sewage waste and in the process of bioremediation.
[22] Thiamidine dimer formation in DNA is caused by -
A.
IR-rays
B.
X-rays
C.
b and g-rays
D.
UV-rays
Ans:
UV-rays
Explanation :
When cells are exposed to sunlight, radiant energy damage the DNA. For example, ultraviolet irradiation causes covalent bond formation between adjacent thymines on the same strand of DNA. Ultraviolet light is absorbed by a double bond in thymine and cytosine bases in DNA. This added energy opens up the bond and allows it to react with a neighboring base.
[23] One of the following excretes uric acid as its excretory product -
A.
Amoeba
B.
Tilapia
C.
Sparrow
D.
Camel
Ans:
Sparrow
Explanation :
Sparrow excretes uric acid as its excretory product.
[24] Smut of wheat is mused by -
A.
Ustilago maydis
B.
Puccinia graminis
C.
Ustilago tritici
D.
Colletotrichum falcatum
Ans:
Ustilago tritici
Explanation :
Loose smut is a seedborne disease that is caused by the fungus Ustilago tritici. The fungus that causes loose smut survives as dormant mycelia within the embryo of an infected wheat seed. When the seed germinates, the fungus becomes active again.
[25] Which of the following is an endangered species?
A.
Black buck
B.
Blue sheep
C.
Gangetic dolphin
D.
Mithun
Ans:
Blue sheep
Explanation :
According to the Red list of 2012, Ganges River Dolphin is one of critically endangered species in India. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.
Explanation :
All plants need nitrogen to make amino acids, proteins and DNA, but the nitrogen in the atmosphere is not in a form that they can use. Plants use nitrogen by absorbing either nitrate or ammonium through the roots.
[8] Which one of the following gives energy to our body?
A.
Vitamins
B.
Water
C.
Carbohydrates
D.
Proteins
Ans:
Carbohydrates
Explanation :
Carbohydrates are the body's preferred energy source. One of the advantages of glucose and other carbohydrates is that they can enter into the oxidation process much more quickly and provide energy more rapidly. Fats make energy available at a slower pace than carbohydrates.
[9] Which of the following is used for wrapping of fractured bones?
A.
White cement
B.
White lead
C.
Zinc oxide
D.
Plaster of Paris
Ans:
Plaster of Paris
Explanation :
Plaster of Paris is a plaster made by calcining gypsum. It can be used to impregnate gauze bandages to make a sculpting material called modroc. It is used similarly to clay, as it is easily shaped when wet, yet sets into a resilient and lightweight structure. This is the material which was (and sometimes still is) used to make classic plaster orthopedic casts to protect limbs with broken bones.
[10] Which one of the following is a water borne disease?
A.
Diabetes
B.
Cholera
C.
Small Pox
D.
Malaria
Ans:
Cholera
Explanation :
Cholera is an infection in the small intestine caused by the bacterium Vibrio cholerae. Transmission occurs primarily by drinking water or eating food that has been contaminated by the feces of an infected person, including one with no apparent symptoms.
[11] The coding segment of DNA is called in -
A.
Codon
B.
Muton
C.
Intron
D.
Exon
Ans:
Codon
Explanation :
The genetic code by which DNA stores the genetic information consists of "codons" of three nucleotides. The functional segments of DNA which code for the transfer of genetic information are called genes. A colon is defined by the initial nucleotide from which translation starts.
[12] Mercury poisoning in man causes the disease -
A.
Black lung
B.
Arsenicosis
C.
Minamata
D.
Tai-Etai
Ans:
Minamata
Explanation :
Minamata disease is a neurological syndrome caused by severe mercury poisoning. It was first discovered in Minamata city in Kumamoto prefecture, Japan, in 1956
[13] Chromosomes consist of -
A.
DNA and lipids
B.
RNA and amino acids
C.
DNA and proteins
D.
RNA and sugar
Ans:
DNA and proteins
Explanation :
A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions.
[14] Which one of the following organs converts glycogen into glucose and purifies the blood?
A.
Liver
B.
Kidney
C.
Lungs
D.
Spleen
Ans:
Liver
Explanation :
Liver produces bile which is stored in the gall bladder. Liver is the largest gland in the body.
[15] Absence of fish along a river indicates -
A.
Zone of degradation
B.
Zone of active decomposition
C.
All zones of pollution
D.
Zone of recovery
Ans:
Zone of degradation
Explanation :
Absence of fish along a river indicates zone of degradation.
[16] Which of the following is not an endocrine gland?
A.
Pituitary
B.
Thyroid
C.
Adrenal
D.
Spleen
Ans:
Spleen
Explanation :
The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system. Old red blood cells are recycled in the spleen, and platelets and white blood cells are stored there. The spleen also helps fight certain kinds of bacteria that cause pneumonia and meningitis.
[17] Which of the following is an insectivorous plant?
A.
Balanophora
B.
Rafflesia
C.
Orobanche
D.
Drosera
Ans:
Drosera
Explanation :
An insectivorous plant, also called a carnivorous plant, captures prey items, such as insects, spiders, Crustaceans, mites, and protozoans, as a nitrogen source. Aldrovanda, Dionaea, Drosera, Drosophyllum, etc are some of them under the Droseraceae family.
[18] Seed dormancy is regulated by -
A.
Abscisic acid
B.
Gibberellic acid
C.
Indole acetic acid
D.
Ethylene
Ans:
Abscisic acid
Explanation :
The transition from dormancy to germination in seeds is a key physiological process during the lifecycle of plants. Abscisic acid (ABA) is the sole plant hormone known to maintain seed dormancy. It acts through a gene expression network involving the transcription factor ABSCISIC ACID INSENSITIVE 3 (ABI3).
[19] The process through which excess of light energy is dissipated in photosynthesis is known as -
A.
Quenching
B.
Scavenging
C.
Photolysis
D.
Photophosphatylation
Ans:
Quenching
Explanation :
Quenching is a process in which absorbed light energy is dissipated as heat and does not take part in photochemistry. The phenomenon involves quenching of chlorophyll a (Chla) fluorescence, which is induced under steady-state illumination.
[20] AIDS virus destroys -
A.
Lymphocytes
B.
Monocytes
C.
Neutrophils
D.
Basophils
Ans:
Lymphocytes
Explanation :
AIDS virus destroys the T-cells inside of the immune system. T cells or T lymphocytes belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity.
[21] Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills?
A.
Pseudomonas
B.
Agrobacterium
C.
Clostridium
D.
Nitrosomonas
Ans:
Nitrosomonas
Explanation :
Nitrosomonas is a genus comprising rod shaped chemoautotrophic bacteria. This rare bacteria oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in treatment of industrial and sewage waste and in the process of bioremediation.
[22] Thiamidine dimer formation in DNA is caused by -
A.
IR-rays
B.
X-rays
C.
b and g-rays
D.
UV-rays
Ans:
UV-rays
Explanation :
When cells are exposed to sunlight, radiant energy damage the DNA. For example, ultraviolet irradiation causes covalent bond formation between adjacent thymines on the same strand of DNA. Ultraviolet light is absorbed by a double bond in thymine and cytosine bases in DNA. This added energy opens up the bond and allows it to react with a neighboring base.
[23] One of the following excretes uric acid as its excretory product -
A.
Amoeba
B.
Tilapia
C.
Sparrow
D.
Camel
Ans:
Sparrow
Explanation :
Sparrow excretes uric acid as its excretory product.
[24] Smut of wheat is mused by -
A.
Ustilago maydis
B.
Puccinia graminis
C.
Ustilago tritici
D.
Colletotrichum falcatum
Ans:
Ustilago tritici
Explanation :
Loose smut is a seedborne disease that is caused by the fungus Ustilago tritici. The fungus that causes loose smut survives as dormant mycelia within the embryo of an infected wheat seed. When the seed germinates, the fungus becomes active again.
[25] Which of the following is an endangered species?
A.
Black buck
B.
Blue sheep
C.
Gangetic dolphin
D.
Mithun
Ans:
Blue sheep
Explanation :
According to the Red list of 2012, Ganges River Dolphin is one of critically endangered species in India. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.
Explanation :
Plaster of Paris is a plaster made by calcining gypsum. It can be used to impregnate gauze bandages to make a sculpting material called modroc. It is used similarly to clay, as it is easily shaped when wet, yet sets into a resilient and lightweight structure. This is the material which was (and sometimes still is) used to make classic plaster orthopedic casts to protect limbs with broken bones.
[10] Which one of the following is a water borne disease?
A.
Diabetes
B.
Cholera
C.
Small Pox
D.
Malaria
Ans:
Cholera
Explanation :
Cholera is an infection in the small intestine caused by the bacterium Vibrio cholerae. Transmission occurs primarily by drinking water or eating food that has been contaminated by the feces of an infected person, including one with no apparent symptoms.
[11] The coding segment of DNA is called in -
A.
Codon
B.
Muton
C.
Intron
D.
Exon
Ans:
Codon
Explanation :
The genetic code by which DNA stores the genetic information consists of "codons" of three nucleotides. The functional segments of DNA which code for the transfer of genetic information are called genes. A colon is defined by the initial nucleotide from which translation starts.
[12] Mercury poisoning in man causes the disease -
A.
Black lung
B.
Arsenicosis
C.
Minamata
D.
Tai-Etai
Ans:
Minamata
Explanation :
Minamata disease is a neurological syndrome caused by severe mercury poisoning. It was first discovered in Minamata city in Kumamoto prefecture, Japan, in 1956
[13] Chromosomes consist of -
A.
DNA and lipids
B.
RNA and amino acids
C.
DNA and proteins
D.
RNA and sugar
Ans:
DNA and proteins
Explanation :
A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions.
[14] Which one of the following organs converts glycogen into glucose and purifies the blood?
A.
Liver
B.
Kidney
C.
Lungs
D.
Spleen
Ans:
Liver
Explanation :
Liver produces bile which is stored in the gall bladder. Liver is the largest gland in the body.
[15] Absence of fish along a river indicates -
A.
Zone of degradation
B.
Zone of active decomposition
C.
All zones of pollution
D.
Zone of recovery
Ans:
Zone of degradation
Explanation :
Absence of fish along a river indicates zone of degradation.
[16] Which of the following is not an endocrine gland?
A.
Pituitary
B.
Thyroid
C.
Adrenal
D.
Spleen
Ans:
Spleen
Explanation :
The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system. Old red blood cells are recycled in the spleen, and platelets and white blood cells are stored there. The spleen also helps fight certain kinds of bacteria that cause pneumonia and meningitis.
[17] Which of the following is an insectivorous plant?
A.
Balanophora
B.
Rafflesia
C.
Orobanche
D.
Drosera
Ans:
Drosera
Explanation :
An insectivorous plant, also called a carnivorous plant, captures prey items, such as insects, spiders, Crustaceans, mites, and protozoans, as a nitrogen source. Aldrovanda, Dionaea, Drosera, Drosophyllum, etc are some of them under the Droseraceae family.
[18] Seed dormancy is regulated by -
A.
Abscisic acid
B.
Gibberellic acid
C.
Indole acetic acid
D.
Ethylene
Ans:
Abscisic acid
Explanation :
The transition from dormancy to germination in seeds is a key physiological process during the lifecycle of plants. Abscisic acid (ABA) is the sole plant hormone known to maintain seed dormancy. It acts through a gene expression network involving the transcription factor ABSCISIC ACID INSENSITIVE 3 (ABI3).
[19] The process through which excess of light energy is dissipated in photosynthesis is known as -
A.
Quenching
B.
Scavenging
C.
Photolysis
D.
Photophosphatylation
Ans:
Quenching
Explanation :
Quenching is a process in which absorbed light energy is dissipated as heat and does not take part in photochemistry. The phenomenon involves quenching of chlorophyll a (Chla) fluorescence, which is induced under steady-state illumination.
[20] AIDS virus destroys -
A.
Lymphocytes
B.
Monocytes
C.
Neutrophils
D.
Basophils
Ans:
Lymphocytes
Explanation :
AIDS virus destroys the T-cells inside of the immune system. T cells or T lymphocytes belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity.
[21] Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills?
A.
Pseudomonas
B.
Agrobacterium
C.
Clostridium
D.
Nitrosomonas
Ans:
Nitrosomonas
Explanation :
Nitrosomonas is a genus comprising rod shaped chemoautotrophic bacteria. This rare bacteria oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in treatment of industrial and sewage waste and in the process of bioremediation.
[22] Thiamidine dimer formation in DNA is caused by -
A.
IR-rays
B.
X-rays
C.
b and g-rays
D.
UV-rays
Ans:
UV-rays
Explanation :
When cells are exposed to sunlight, radiant energy damage the DNA. For example, ultraviolet irradiation causes covalent bond formation between adjacent thymines on the same strand of DNA. Ultraviolet light is absorbed by a double bond in thymine and cytosine bases in DNA. This added energy opens up the bond and allows it to react with a neighboring base.
[23] One of the following excretes uric acid as its excretory product -
A.
Amoeba
B.
Tilapia
C.
Sparrow
D.
Camel
Ans:
Sparrow
Explanation :
Sparrow excretes uric acid as its excretory product.
[24] Smut of wheat is mused by -
A.
Ustilago maydis
B.
Puccinia graminis
C.
Ustilago tritici
D.
Colletotrichum falcatum
Ans:
Ustilago tritici
Explanation :
Loose smut is a seedborne disease that is caused by the fungus Ustilago tritici. The fungus that causes loose smut survives as dormant mycelia within the embryo of an infected wheat seed. When the seed germinates, the fungus becomes active again.
[25] Which of the following is an endangered species?
A.
Black buck
B.
Blue sheep
C.
Gangetic dolphin
D.
Mithun
Ans:
Blue sheep
Explanation :
According to the Red list of 2012, Ganges River Dolphin is one of critically endangered species in India. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.
Explanation :
The genetic code by which DNA stores the genetic information consists of "codons" of three nucleotides. The functional segments of DNA which code for the transfer of genetic information are called genes. A colon is defined by the initial nucleotide from which translation starts.
[12] Mercury poisoning in man causes the disease -
A.
Black lung
B.
Arsenicosis
C.
Minamata
D.
Tai-Etai
Ans:
Minamata
Explanation :
Minamata disease is a neurological syndrome caused by severe mercury poisoning. It was first discovered in Minamata city in Kumamoto prefecture, Japan, in 1956
[13] Chromosomes consist of -
A.
DNA and lipids
B.
RNA and amino acids
C.
DNA and proteins
D.
RNA and sugar
Ans:
DNA and proteins
Explanation :
A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions.
[14] Which one of the following organs converts glycogen into glucose and purifies the blood?
A.
Liver
B.
Kidney
C.
Lungs
D.
Spleen
Ans:
Liver
Explanation :
Liver produces bile which is stored in the gall bladder. Liver is the largest gland in the body.
[15] Absence of fish along a river indicates -
A.
Zone of degradation
B.
Zone of active decomposition
C.
All zones of pollution
D.
Zone of recovery
Ans:
Zone of degradation
Explanation :
Absence of fish along a river indicates zone of degradation.
[16] Which of the following is not an endocrine gland?
A.
Pituitary
B.
Thyroid
C.
Adrenal
D.
Spleen
Ans:
Spleen
Explanation :
The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system. Old red blood cells are recycled in the spleen, and platelets and white blood cells are stored there. The spleen also helps fight certain kinds of bacteria that cause pneumonia and meningitis.
[17] Which of the following is an insectivorous plant?
A.
Balanophora
B.
Rafflesia
C.
Orobanche
D.
Drosera
Ans:
Drosera
Explanation :
An insectivorous plant, also called a carnivorous plant, captures prey items, such as insects, spiders, Crustaceans, mites, and protozoans, as a nitrogen source. Aldrovanda, Dionaea, Drosera, Drosophyllum, etc are some of them under the Droseraceae family.
[18] Seed dormancy is regulated by -
A.
Abscisic acid
B.
Gibberellic acid
C.
Indole acetic acid
D.
Ethylene
Ans:
Abscisic acid
Explanation :
The transition from dormancy to germination in seeds is a key physiological process during the lifecycle of plants. Abscisic acid (ABA) is the sole plant hormone known to maintain seed dormancy. It acts through a gene expression network involving the transcription factor ABSCISIC ACID INSENSITIVE 3 (ABI3).
[19] The process through which excess of light energy is dissipated in photosynthesis is known as -
A.
Quenching
B.
Scavenging
C.
Photolysis
D.
Photophosphatylation
Ans:
Quenching
Explanation :
Quenching is a process in which absorbed light energy is dissipated as heat and does not take part in photochemistry. The phenomenon involves quenching of chlorophyll a (Chla) fluorescence, which is induced under steady-state illumination.
[20] AIDS virus destroys -
A.
Lymphocytes
B.
Monocytes
C.
Neutrophils
D.
Basophils
Ans:
Lymphocytes
Explanation :
AIDS virus destroys the T-cells inside of the immune system. T cells or T lymphocytes belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity.
[21] Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills?
A.
Pseudomonas
B.
Agrobacterium
C.
Clostridium
D.
Nitrosomonas
Ans:
Nitrosomonas
Explanation :
Nitrosomonas is a genus comprising rod shaped chemoautotrophic bacteria. This rare bacteria oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in treatment of industrial and sewage waste and in the process of bioremediation.
[22] Thiamidine dimer formation in DNA is caused by -
A.
IR-rays
B.
X-rays
C.
b and g-rays
D.
UV-rays
Ans:
UV-rays
Explanation :
When cells are exposed to sunlight, radiant energy damage the DNA. For example, ultraviolet irradiation causes covalent bond formation between adjacent thymines on the same strand of DNA. Ultraviolet light is absorbed by a double bond in thymine and cytosine bases in DNA. This added energy opens up the bond and allows it to react with a neighboring base.
[23] One of the following excretes uric acid as its excretory product -
A.
Amoeba
B.
Tilapia
C.
Sparrow
D.
Camel
Ans:
Sparrow
Explanation :
Sparrow excretes uric acid as its excretory product.
[24] Smut of wheat is mused by -
A.
Ustilago maydis
B.
Puccinia graminis
C.
Ustilago tritici
D.
Colletotrichum falcatum
Ans:
Ustilago tritici
Explanation :
Loose smut is a seedborne disease that is caused by the fungus Ustilago tritici. The fungus that causes loose smut survives as dormant mycelia within the embryo of an infected wheat seed. When the seed germinates, the fungus becomes active again.
[25] Which of the following is an endangered species?
A.
Black buck
B.
Blue sheep
C.
Gangetic dolphin
D.
Mithun
Ans:
Blue sheep
Explanation :
According to the Red list of 2012, Ganges River Dolphin is one of critically endangered species in India. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.
Explanation :
A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions.
[14] Which one of the following organs converts glycogen into glucose and purifies the blood?
A.
Liver
B.
Kidney
C.
Lungs
D.
Spleen
Ans:
Liver
Explanation :
Liver produces bile which is stored in the gall bladder. Liver is the largest gland in the body.
[15] Absence of fish along a river indicates -
A.
Zone of degradation
B.
Zone of active decomposition
C.
All zones of pollution
D.
Zone of recovery
Ans:
Zone of degradation
Explanation :
Absence of fish along a river indicates zone of degradation.
[16] Which of the following is not an endocrine gland?
A.
Pituitary
B.
Thyroid
C.
Adrenal
D.
Spleen
Ans:
Spleen
Explanation :
The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system. Old red blood cells are recycled in the spleen, and platelets and white blood cells are stored there. The spleen also helps fight certain kinds of bacteria that cause pneumonia and meningitis.
[17] Which of the following is an insectivorous plant?
A.
Balanophora
B.
Rafflesia
C.
Orobanche
D.
Drosera
Ans:
Drosera
Explanation :
An insectivorous plant, also called a carnivorous plant, captures prey items, such as insects, spiders, Crustaceans, mites, and protozoans, as a nitrogen source. Aldrovanda, Dionaea, Drosera, Drosophyllum, etc are some of them under the Droseraceae family.
[18] Seed dormancy is regulated by -
A.
Abscisic acid
B.
Gibberellic acid
C.
Indole acetic acid
D.
Ethylene
Ans:
Abscisic acid
Explanation :
The transition from dormancy to germination in seeds is a key physiological process during the lifecycle of plants. Abscisic acid (ABA) is the sole plant hormone known to maintain seed dormancy. It acts through a gene expression network involving the transcription factor ABSCISIC ACID INSENSITIVE 3 (ABI3).
[19] The process through which excess of light energy is dissipated in photosynthesis is known as -
A.
Quenching
B.
Scavenging
C.
Photolysis
D.
Photophosphatylation
Ans:
Quenching
Explanation :
Quenching is a process in which absorbed light energy is dissipated as heat and does not take part in photochemistry. The phenomenon involves quenching of chlorophyll a (Chla) fluorescence, which is induced under steady-state illumination.
[20] AIDS virus destroys -
A.
Lymphocytes
B.
Monocytes
C.
Neutrophils
D.
Basophils
Ans:
Lymphocytes
Explanation :
AIDS virus destroys the T-cells inside of the immune system. T cells or T lymphocytes belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity.
[21] Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills?
A.
Pseudomonas
B.
Agrobacterium
C.
Clostridium
D.
Nitrosomonas
Ans:
Nitrosomonas
Explanation :
Nitrosomonas is a genus comprising rod shaped chemoautotrophic bacteria. This rare bacteria oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in treatment of industrial and sewage waste and in the process of bioremediation.
[22] Thiamidine dimer formation in DNA is caused by -
A.
IR-rays
B.
X-rays
C.
b and g-rays
D.
UV-rays
Ans:
UV-rays
Explanation :
When cells are exposed to sunlight, radiant energy damage the DNA. For example, ultraviolet irradiation causes covalent bond formation between adjacent thymines on the same strand of DNA. Ultraviolet light is absorbed by a double bond in thymine and cytosine bases in DNA. This added energy opens up the bond and allows it to react with a neighboring base.
[23] One of the following excretes uric acid as its excretory product -
A.
Amoeba
B.
Tilapia
C.
Sparrow
D.
Camel
Ans:
Sparrow
Explanation :
Sparrow excretes uric acid as its excretory product.
[24] Smut of wheat is mused by -
A.
Ustilago maydis
B.
Puccinia graminis
C.
Ustilago tritici
D.
Colletotrichum falcatum
Ans:
Ustilago tritici
Explanation :
Loose smut is a seedborne disease that is caused by the fungus Ustilago tritici. The fungus that causes loose smut survives as dormant mycelia within the embryo of an infected wheat seed. When the seed germinates, the fungus becomes active again.
[25] Which of the following is an endangered species?
A.
Black buck
B.
Blue sheep
C.
Gangetic dolphin
D.
Mithun
Ans:
Blue sheep
Explanation :
According to the Red list of 2012, Ganges River Dolphin is one of critically endangered species in India. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.
Explanation :
Absence of fish along a river indicates zone of degradation.
[16] Which of the following is not an endocrine gland?
A.
Pituitary
B.
Thyroid
C.
Adrenal
D.
Spleen
Ans:
Spleen
Explanation :
The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system. Old red blood cells are recycled in the spleen, and platelets and white blood cells are stored there. The spleen also helps fight certain kinds of bacteria that cause pneumonia and meningitis.
[17] Which of the following is an insectivorous plant?
A.
Balanophora
B.
Rafflesia
C.
Orobanche
D.
Drosera
Ans:
Drosera
Explanation :
An insectivorous plant, also called a carnivorous plant, captures prey items, such as insects, spiders, Crustaceans, mites, and protozoans, as a nitrogen source. Aldrovanda, Dionaea, Drosera, Drosophyllum, etc are some of them under the Droseraceae family.
[18] Seed dormancy is regulated by -
A.
Abscisic acid
B.
Gibberellic acid
C.
Indole acetic acid
D.
Ethylene
Ans:
Abscisic acid
Explanation :
The transition from dormancy to germination in seeds is a key physiological process during the lifecycle of plants. Abscisic acid (ABA) is the sole plant hormone known to maintain seed dormancy. It acts through a gene expression network involving the transcription factor ABSCISIC ACID INSENSITIVE 3 (ABI3).
[19] The process through which excess of light energy is dissipated in photosynthesis is known as -
A.
Quenching
B.
Scavenging
C.
Photolysis
D.
Photophosphatylation
Ans:
Quenching
Explanation :
Quenching is a process in which absorbed light energy is dissipated as heat and does not take part in photochemistry. The phenomenon involves quenching of chlorophyll a (Chla) fluorescence, which is induced under steady-state illumination.
[20] AIDS virus destroys -
A.
Lymphocytes
B.
Monocytes
C.
Neutrophils
D.
Basophils
Ans:
Lymphocytes
Explanation :
AIDS virus destroys the T-cells inside of the immune system. T cells or T lymphocytes belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity.
[21] Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills?
A.
Pseudomonas
B.
Agrobacterium
C.
Clostridium
D.
Nitrosomonas
Ans:
Nitrosomonas
Explanation :
Nitrosomonas is a genus comprising rod shaped chemoautotrophic bacteria. This rare bacteria oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in treatment of industrial and sewage waste and in the process of bioremediation.
[22] Thiamidine dimer formation in DNA is caused by -
A.
IR-rays
B.
X-rays
C.
b and g-rays
D.
UV-rays
Ans:
UV-rays
Explanation :
When cells are exposed to sunlight, radiant energy damage the DNA. For example, ultraviolet irradiation causes covalent bond formation between adjacent thymines on the same strand of DNA. Ultraviolet light is absorbed by a double bond in thymine and cytosine bases in DNA. This added energy opens up the bond and allows it to react with a neighboring base.
[23] One of the following excretes uric acid as its excretory product -
A.
Amoeba
B.
Tilapia
C.
Sparrow
D.
Camel
Ans:
Sparrow
Explanation :
Sparrow excretes uric acid as its excretory product.
[24] Smut of wheat is mused by -
A.
Ustilago maydis
B.
Puccinia graminis
C.
Ustilago tritici
D.
Colletotrichum falcatum
Ans:
Ustilago tritici
Explanation :
Loose smut is a seedborne disease that is caused by the fungus Ustilago tritici. The fungus that causes loose smut survives as dormant mycelia within the embryo of an infected wheat seed. When the seed germinates, the fungus becomes active again.
[25] Which of the following is an endangered species?
A.
Black buck
B.
Blue sheep
C.
Gangetic dolphin
D.
Mithun
Ans:
Blue sheep
Explanation :
According to the Red list of 2012, Ganges River Dolphin is one of critically endangered species in India. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.
Explanation :
An insectivorous plant, also called a carnivorous plant, captures prey items, such as insects, spiders, Crustaceans, mites, and protozoans, as a nitrogen source. Aldrovanda, Dionaea, Drosera, Drosophyllum, etc are some of them under the Droseraceae family.
[18] Seed dormancy is regulated by -
A.
Abscisic acid
B.
Gibberellic acid
C.
Indole acetic acid
D.
Ethylene
Ans:
Abscisic acid
Explanation :
The transition from dormancy to germination in seeds is a key physiological process during the lifecycle of plants. Abscisic acid (ABA) is the sole plant hormone known to maintain seed dormancy. It acts through a gene expression network involving the transcription factor ABSCISIC ACID INSENSITIVE 3 (ABI3).
[19] The process through which excess of light energy is dissipated in photosynthesis is known as -
A.
Quenching
B.
Scavenging
C.
Photolysis
D.
Photophosphatylation
Ans:
Quenching
Explanation :
Quenching is a process in which absorbed light energy is dissipated as heat and does not take part in photochemistry. The phenomenon involves quenching of chlorophyll a (Chla) fluorescence, which is induced under steady-state illumination.
[20] AIDS virus destroys -
A.
Lymphocytes
B.
Monocytes
C.
Neutrophils
D.
Basophils
Ans:
Lymphocytes
Explanation :
AIDS virus destroys the T-cells inside of the immune system. T cells or T lymphocytes belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity.
[21] Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills?
A.
Pseudomonas
B.
Agrobacterium
C.
Clostridium
D.
Nitrosomonas
Ans:
Nitrosomonas
Explanation :
Nitrosomonas is a genus comprising rod shaped chemoautotrophic bacteria. This rare bacteria oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in treatment of industrial and sewage waste and in the process of bioremediation.
[22] Thiamidine dimer formation in DNA is caused by -
A.
IR-rays
B.
X-rays
C.
b and g-rays
D.
UV-rays
Ans:
UV-rays
Explanation :
When cells are exposed to sunlight, radiant energy damage the DNA. For example, ultraviolet irradiation causes covalent bond formation between adjacent thymines on the same strand of DNA. Ultraviolet light is absorbed by a double bond in thymine and cytosine bases in DNA. This added energy opens up the bond and allows it to react with a neighboring base.
[23] One of the following excretes uric acid as its excretory product -
A.
Amoeba
B.
Tilapia
C.
Sparrow
D.
Camel
Ans:
Sparrow
Explanation :
Sparrow excretes uric acid as its excretory product.
[24] Smut of wheat is mused by -
A.
Ustilago maydis
B.
Puccinia graminis
C.
Ustilago tritici
D.
Colletotrichum falcatum
Ans:
Ustilago tritici
Explanation :
Loose smut is a seedborne disease that is caused by the fungus Ustilago tritici. The fungus that causes loose smut survives as dormant mycelia within the embryo of an infected wheat seed. When the seed germinates, the fungus becomes active again.
[25] Which of the following is an endangered species?
A.
Black buck
B.
Blue sheep
C.
Gangetic dolphin
D.
Mithun
Ans:
Blue sheep
Explanation :
According to the Red list of 2012, Ganges River Dolphin is one of critically endangered species in India. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.
Explanation :
Quenching is a process in which absorbed light energy is dissipated as heat and does not take part in photochemistry. The phenomenon involves quenching of chlorophyll a (Chla) fluorescence, which is induced under steady-state illumination.
[20] AIDS virus destroys -
A.
Lymphocytes
B.
Monocytes
C.
Neutrophils
D.
Basophils
Ans:
Lymphocytes
Explanation :
AIDS virus destroys the T-cells inside of the immune system. T cells or T lymphocytes belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity.
[21] Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills?
A.
Pseudomonas
B.
Agrobacterium
C.
Clostridium
D.
Nitrosomonas
Ans:
Nitrosomonas
Explanation :
Nitrosomonas is a genus comprising rod shaped chemoautotrophic bacteria. This rare bacteria oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in treatment of industrial and sewage waste and in the process of bioremediation.
[22] Thiamidine dimer formation in DNA is caused by -
A.
IR-rays
B.
X-rays
C.
b and g-rays
D.
UV-rays
Ans:
UV-rays
Explanation :
When cells are exposed to sunlight, radiant energy damage the DNA. For example, ultraviolet irradiation causes covalent bond formation between adjacent thymines on the same strand of DNA. Ultraviolet light is absorbed by a double bond in thymine and cytosine bases in DNA. This added energy opens up the bond and allows it to react with a neighboring base.
[23] One of the following excretes uric acid as its excretory product -
A.
Amoeba
B.
Tilapia
C.
Sparrow
D.
Camel
Ans:
Sparrow
Explanation :
Sparrow excretes uric acid as its excretory product.
[24] Smut of wheat is mused by -
A.
Ustilago maydis
B.
Puccinia graminis
C.
Ustilago tritici
D.
Colletotrichum falcatum
Ans:
Ustilago tritici
Explanation :
Loose smut is a seedborne disease that is caused by the fungus Ustilago tritici. The fungus that causes loose smut survives as dormant mycelia within the embryo of an infected wheat seed. When the seed germinates, the fungus becomes active again.
[25] Which of the following is an endangered species?
A.
Black buck
B.
Blue sheep
C.
Gangetic dolphin
D.
Mithun
Ans:
Blue sheep
Explanation :
According to the Red list of 2012, Ganges River Dolphin is one of critically endangered species in India. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.
Explanation :
Nitrosomonas is a genus comprising rod shaped chemoautotrophic bacteria. This rare bacteria oxidizes ammonia into nitrite as a metabolic process. Nitrosomonas are useful in treatment of industrial and sewage waste and in the process of bioremediation.
[22] Thiamidine dimer formation in DNA is caused by -
A.
IR-rays
B.
X-rays
C.
b and g-rays
D.
UV-rays
Ans:
UV-rays
Explanation :
When cells are exposed to sunlight, radiant energy damage the DNA. For example, ultraviolet irradiation causes covalent bond formation between adjacent thymines on the same strand of DNA. Ultraviolet light is absorbed by a double bond in thymine and cytosine bases in DNA. This added energy opens up the bond and allows it to react with a neighboring base.
[23] One of the following excretes uric acid as its excretory product -
A.
Amoeba
B.
Tilapia
C.
Sparrow
D.
Camel
Ans:
Sparrow
Explanation :
Sparrow excretes uric acid as its excretory product.
[24] Smut of wheat is mused by -
A.
Ustilago maydis
B.
Puccinia graminis
C.
Ustilago tritici
D.
Colletotrichum falcatum
Ans:
Ustilago tritici
Explanation :
Loose smut is a seedborne disease that is caused by the fungus Ustilago tritici. The fungus that causes loose smut survives as dormant mycelia within the embryo of an infected wheat seed. When the seed germinates, the fungus becomes active again.
[25] Which of the following is an endangered species?
A.
Black buck
B.
Blue sheep
C.
Gangetic dolphin
D.
Mithun
Ans:
Blue sheep
Explanation :
According to the Red list of 2012, Ganges River Dolphin is one of critically endangered species in India. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.
Explanation :
Sparrow excretes uric acid as its excretory product.
[24] Smut of wheat is mused by -
A.
Ustilago maydis
B.
Puccinia graminis
C.
Ustilago tritici
D.
Colletotrichum falcatum
Ans:
Ustilago tritici
Explanation :
Loose smut is a seedborne disease that is caused by the fungus Ustilago tritici. The fungus that causes loose smut survives as dormant mycelia within the embryo of an infected wheat seed. When the seed germinates, the fungus becomes active again.
[25] Which of the following is an endangered species?
A.
Black buck
B.
Blue sheep
C.
Gangetic dolphin
D.
Mithun
Ans:
Blue sheep
Explanation :
According to the Red list of 2012, Ganges River Dolphin is one of critically endangered species in India. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.
Explanation :
According to the Red list of 2012, Ganges River Dolphin is one of critically endangered species in India. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.