[1] Reflex actions are controlled by -
A.
the Brain
B.
the Spinal Chord
C.
the Nerves
D.
the Cells
Ans:
the Spinal Chord
Explanation :
Reflex actions are automatic, rapid and spontaneous and we do not have control over such actions. These are controlled by the spinal cord. They are not controlled by the brain.
[2] The floral part that receives pollen grains during pollination is -
A.
ovary
B.
style
C.
stigma
D.
ovules
Ans:
stigma
Explanation :
The stigma is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. The stigma receives pollen at pollination and it is on the stigma that the pollen grain germinates. The style connects the stigma to the ovary.
[3] A warm-blooded animal is -
A.
Shark
B.
Snake
C.
Bat
D.
Ascorbic
Ans:
Bat
Explanation :
With a few exceptions, all mammals and birds are warm-blooded, and all reptiles, insects, arachnids, amphibians and fish are cold-blooded. Bat is a mammal. Warm-blooded creatures, like mammals and birds, try to keep the inside of their bodies at a constant temperature. They do this by generating their own heat when they are in a cooler environment, and by cooling themselves when they are in a hotter environment.
[4] Which of the following is the hardest substance in the human body?
A.
Bone
B.
Enamel
C.
Dentine
D.
Nail
Ans:
Enamel
Explanation :
Tooth enamel, along with dentin, cementum, and dental pulp is one of the four major tissues that make up the tooth in vertebrates. It is the hardest and most highly mineralized substance in the human body. It has approximately 95% calcium concentration.
[5] Which of the following is a coldblooded animal?
A.
Pigeon
B.
Tortoise
C.
Fox
D.
Goat
Ans:
Tortoise
Explanation :
Tortoises are cold blooded reptiles and req heat, which they regulate by moving in and of the sun during the day. A tortoise can maintain A higher body temperature in the wild at night by digging into soil which has been heated by the sun during the day.
[6] The membrane covering the lungs is a -
A.
pleura
B.
pericardium
C.
peritoneum
D.
mesothelium
Ans:
pleura
Explanation :
In human anatomy, the pleural cavity is the potential space between the two pleura (visceral and parietal) of the lungs. The pleura are a membrane which folds back onto itself to form a two-layered, membrane structure. The thin space between the two pleural layers is known as the pleural cavity; it normally contains a small amount of pleural fluid.
[7] Ascent of sap in plants takes place through -
A.
Pith
B.
Phloem
C.
Cambium
D.
Xylem
Ans:
Xylem
Explanation :
The ascent of sap in the xylem tissue of plants is the upward movement of water from the root to the crown. Xylem is a complex tissue consisting of living and non-living cells. The conducting cells in xylem are typically non-living and include, in various groups of plants, vessels members and tracheids.
[8] A plant with fibrous root system is -
A.
Wheat
B.
Pea
C.
Mustard
D.
Bean
Ans:
Wheat
Explanation :
A fibrous root system (sometimes also called adventitious root system) is the opposite of a taproot system. It is usually formed by thin, moderately branching roots growing from the stem. A fibrous root system is universal in monocotyledonous plants and ferns. Grass, bamboo, banana, rice, wheat, and most of the plants with monocotyledons have fibrous root system.
[9] Haemoglobin is a -
A.
protein
B.
carbohydrate
C.
fat
D.
vitamin
Ans:
protein
Explanation :
Hemoglobin is the iron-containing oxygen-transport metal-protein in the red blood cells of all vertebrates which carries oxygen from the respiratory organs (lungs or gills) to the rest of the body (i.e, the tissues) where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[10] Why death of fish is more common during summer than in winter? It is because of -
A.
shortage of food
B.
concentration of toxins
C.
depletion of oxygen
D.
spread of diseases
Ans:
depletion of oxygen
Explanation :
Fish die more in summer due to oxygen depletion which refers to low levels of dissolved oxygen (DO) in water. Warm water is much less capable of holding oxygen has in solution than cool water. For example, water that is 900 F can only hold 7.4 mg/L DO at saturation, whereas water that is 450 F can hold 11.9 mg/L DO at saturation. This physical phenomenon puts the fish in double jeopardy because at high water temperatures their metabolic rates increase, hence their physiologic demand for oxygen increases.
[11] Which of the following groups of organisms reproduce faster?
A.
Algae
B.
Fungi
C.
Bacteria
D.
Protozoa
Ans:
Bacteria
Explanation :
Unlike in multicellular organisms, increases in cell size (cell growth and reproduction by cell division) are tightly linked in unicellular organisms. Bacteria grow to a fixed size and then reproduce through binary fission, a form of asexual reproduction. Under optimal conditions, bacteria can grow and divide extremely rapidly, and bacterial populations can double as quickly as every 9.8 minutes.
[12] Normal blood pressure of man is -
A.
80/120 mm Hg
B.
90/140 mm Hg
C.
120/160 mm Hg
D.
85/150 mm Hg
Ans:
80/120 mm Hg
Explanation :
Normal blood pressure is considered to be anything below 120/80. Prehypertension is defined as a systolic reading between 120 and 129 and a diastolic reading lower than 80. Hypertension is defined as blood pressure of 130/80 or higher.
[13] Which of the following stores glycogen?
A.
Spleen
B.
Pancreas
C.
Gastric glands
D.
Liver
Ans:
Liver
Explanation :
Glycogen, the major reservoir of carbohydrate in the body, is comprised of long chain polymers of glucose molecules. The body stores approximately 450-550 grams of glycogen within the muscle and liver for use during exercise. At higher exercise intensities, glycogen becomes the main fuel utilized. Depletion of liver glycogen has the consequence of diminishing liver glucose output, and blood glucose concentrations accordingly.
[14] The form of carbohydrate which is synthesized in plants is -
A.
Starch
B.
Glucose
C.
Fructose
D.
Cellulose
Ans:
Glucose
Explanation :
Carbohydrates are initially synthesized in plants from a complex series of reactions involving photosynthesis. The simplified version of this chemical reaction is to utilize carbon dioxide molecules from the air and water molecules and the energy from the sun to produce a simple sugar such as glucose and oxygen molecules as a byproduct.
[15] Which of the following diseases is caused by a virus?
A.
Influenza
B.
Pneumonia
C.
Cholera
D.
Whooping cough
Ans:
Influenza
Explanation :
Influenza, commonly known as the 'flue, is an infectious disease of birds and mammals caused by RNA viruses. The most common symptoms are chills, fever, sore throat, muscle pains, headache (often severe), coughing, weakness /fatigue and general discomfort. Typically, influenza is transmitted through the air by coughs or sneezes, creating aerosols containing the virus.
[16] From which part of a plant is turmeric obtained?
A.
Root
B.
Stem
C.
Fruit
D.
Flower
Ans:
Stem
Explanation :
Turmeric is the rhizome or underground stern of a ginger-like plant. The whole turmeric is a tuberous rhizome, with a rough, segmented skin.
[17] Genes, the hereditary units, are located in the -
A.
nuclear membrane
B.
chromosomes
C.
lysosomes
D.
cell membrane
Ans:
chromosomes
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. Chromosomal DNA encodes most or all of an organism's genetic information; some species also contain plastids or other extra-chromosomal genetic elements.
[18] Which of these is a modified underground stem?
A.
Radish
B.
Carrot
C.
Sweet Potato
D.
Potato
Ans:
Potato
Explanation :
Underground stems are modified plant structures that derive from stem tissue but exist under the soil surface. Seedlings develop two structures or axes of growth, one that develops upward out of the soil, called stems, and structures that develop downward which are called roots. Potato is such a modified underground stern.
[19] The food conducting tissue of a plant is -
A.
Phloem
B.
Xylem
C.
Parenchyma
D.
Collenchyma
Ans:
Phloem
Explanation :
In vascular plants, phloem is the living tissue that carries organic nutrients, in particular, sucrose, a sugar, to all parts of the plant where needed. In trees, the phloem is the innermost layer of the bark. The phloem is concerned mainly with the transport of soluble organic material made during photosynthesis. This is called translocation.
[20] Opium is a plant product obtained from -
A.
dried leaves
B.
dried latex
C.
roots
D.
stem bark
Ans:
dried latex
Explanation :
Opium is the dried latex obtained from the opium poppy. Opium contains approximately 12% morphine, an alkaloid, which is frequently processed chemically to produce heroin for the illegal drug trade. The latex also includes codeine and non-narcotic alkaloids such as papaverine, thebaine and noscapine.
[21] Drying oils contain a fairly large proportion of -
A.
fats
B.
proteins
C.
saturated fatty acids
D.
unsaturated fatty acids
Ans:
unsaturated fatty acids
Explanation :
They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.
[22] Crabs belongs to the phylum -
A.
Mollusca
B.
Cnidaria
C.
Arthropoda
D.
Platyhelminthes
Ans:
Arthropoda
Explanation :
Crabs come from the same family as lobsters, crayfish, shrimp, krill and barnacles, as all are in the subphylum crustacea. They are also in the phylum Arthropoda.
[23] Clove is a -
A.
Dried flower bud
B.
Flower
C.
Fruit
D.
Seed
Ans:
Dried flower bud
Explanation :
A bud is a structure on a plant, often round, that encloses an undeveloped flower or leaf. All buds can be harvested and dried; some are used as spices.
[24] Dormancy period of animals during winter season is called -
A.
Aestivation
B.
Hibernation
C.
Regeneration
D.
Mutation
Ans:
Hibernation
Explanation :
Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate. Often associated with cold temperatures, the purpose of hibernation is to conserve energy during a period when sufficient food is scarce.
[25] Breeding and management of bees is known as -
A.
Sericulture
B.
Silviculture
C.
Pisciculture
D.
Apiculture
Ans:
Apiculture
Explanation :
Beekeeping (or apiculture, from Latin api8, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.
Explanation :
Reflex actions are automatic, rapid and spontaneous and we do not have control over such actions. These are controlled by the spinal cord. They are not controlled by the brain.
[2] The floral part that receives pollen grains during pollination is -
A.
ovary
B.
style
C.
stigma
D.
ovules
Ans:
stigma
Explanation :
The stigma is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. The stigma receives pollen at pollination and it is on the stigma that the pollen grain germinates. The style connects the stigma to the ovary.
[3] A warm-blooded animal is -
A.
Shark
B.
Snake
C.
Bat
D.
Ascorbic
Ans:
Bat
Explanation :
With a few exceptions, all mammals and birds are warm-blooded, and all reptiles, insects, arachnids, amphibians and fish are cold-blooded. Bat is a mammal. Warm-blooded creatures, like mammals and birds, try to keep the inside of their bodies at a constant temperature. They do this by generating their own heat when they are in a cooler environment, and by cooling themselves when they are in a hotter environment.
[4] Which of the following is the hardest substance in the human body?
A.
Bone
B.
Enamel
C.
Dentine
D.
Nail
Ans:
Enamel
Explanation :
Tooth enamel, along with dentin, cementum, and dental pulp is one of the four major tissues that make up the tooth in vertebrates. It is the hardest and most highly mineralized substance in the human body. It has approximately 95% calcium concentration.
[5] Which of the following is a coldblooded animal?
A.
Pigeon
B.
Tortoise
C.
Fox
D.
Goat
Ans:
Tortoise
Explanation :
Tortoises are cold blooded reptiles and req heat, which they regulate by moving in and of the sun during the day. A tortoise can maintain A higher body temperature in the wild at night by digging into soil which has been heated by the sun during the day.
[6] The membrane covering the lungs is a -
A.
pleura
B.
pericardium
C.
peritoneum
D.
mesothelium
Ans:
pleura
Explanation :
In human anatomy, the pleural cavity is the potential space between the two pleura (visceral and parietal) of the lungs. The pleura are a membrane which folds back onto itself to form a two-layered, membrane structure. The thin space between the two pleural layers is known as the pleural cavity; it normally contains a small amount of pleural fluid.
[7] Ascent of sap in plants takes place through -
A.
Pith
B.
Phloem
C.
Cambium
D.
Xylem
Ans:
Xylem
Explanation :
The ascent of sap in the xylem tissue of plants is the upward movement of water from the root to the crown. Xylem is a complex tissue consisting of living and non-living cells. The conducting cells in xylem are typically non-living and include, in various groups of plants, vessels members and tracheids.
[8] A plant with fibrous root system is -
A.
Wheat
B.
Pea
C.
Mustard
D.
Bean
Ans:
Wheat
Explanation :
A fibrous root system (sometimes also called adventitious root system) is the opposite of a taproot system. It is usually formed by thin, moderately branching roots growing from the stem. A fibrous root system is universal in monocotyledonous plants and ferns. Grass, bamboo, banana, rice, wheat, and most of the plants with monocotyledons have fibrous root system.
[9] Haemoglobin is a -
A.
protein
B.
carbohydrate
C.
fat
D.
vitamin
Ans:
protein
Explanation :
Hemoglobin is the iron-containing oxygen-transport metal-protein in the red blood cells of all vertebrates which carries oxygen from the respiratory organs (lungs or gills) to the rest of the body (i.e, the tissues) where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[10] Why death of fish is more common during summer than in winter? It is because of -
A.
shortage of food
B.
concentration of toxins
C.
depletion of oxygen
D.
spread of diseases
Ans:
depletion of oxygen
Explanation :
Fish die more in summer due to oxygen depletion which refers to low levels of dissolved oxygen (DO) in water. Warm water is much less capable of holding oxygen has in solution than cool water. For example, water that is 900 F can only hold 7.4 mg/L DO at saturation, whereas water that is 450 F can hold 11.9 mg/L DO at saturation. This physical phenomenon puts the fish in double jeopardy because at high water temperatures their metabolic rates increase, hence their physiologic demand for oxygen increases.
[11] Which of the following groups of organisms reproduce faster?
A.
Algae
B.
Fungi
C.
Bacteria
D.
Protozoa
Ans:
Bacteria
Explanation :
Unlike in multicellular organisms, increases in cell size (cell growth and reproduction by cell division) are tightly linked in unicellular organisms. Bacteria grow to a fixed size and then reproduce through binary fission, a form of asexual reproduction. Under optimal conditions, bacteria can grow and divide extremely rapidly, and bacterial populations can double as quickly as every 9.8 minutes.
[12] Normal blood pressure of man is -
A.
80/120 mm Hg
B.
90/140 mm Hg
C.
120/160 mm Hg
D.
85/150 mm Hg
Ans:
80/120 mm Hg
Explanation :
Normal blood pressure is considered to be anything below 120/80. Prehypertension is defined as a systolic reading between 120 and 129 and a diastolic reading lower than 80. Hypertension is defined as blood pressure of 130/80 or higher.
[13] Which of the following stores glycogen?
A.
Spleen
B.
Pancreas
C.
Gastric glands
D.
Liver
Ans:
Liver
Explanation :
Glycogen, the major reservoir of carbohydrate in the body, is comprised of long chain polymers of glucose molecules. The body stores approximately 450-550 grams of glycogen within the muscle and liver for use during exercise. At higher exercise intensities, glycogen becomes the main fuel utilized. Depletion of liver glycogen has the consequence of diminishing liver glucose output, and blood glucose concentrations accordingly.
[14] The form of carbohydrate which is synthesized in plants is -
A.
Starch
B.
Glucose
C.
Fructose
D.
Cellulose
Ans:
Glucose
Explanation :
Carbohydrates are initially synthesized in plants from a complex series of reactions involving photosynthesis. The simplified version of this chemical reaction is to utilize carbon dioxide molecules from the air and water molecules and the energy from the sun to produce a simple sugar such as glucose and oxygen molecules as a byproduct.
[15] Which of the following diseases is caused by a virus?
A.
Influenza
B.
Pneumonia
C.
Cholera
D.
Whooping cough
Ans:
Influenza
Explanation :
Influenza, commonly known as the 'flue, is an infectious disease of birds and mammals caused by RNA viruses. The most common symptoms are chills, fever, sore throat, muscle pains, headache (often severe), coughing, weakness /fatigue and general discomfort. Typically, influenza is transmitted through the air by coughs or sneezes, creating aerosols containing the virus.
[16] From which part of a plant is turmeric obtained?
A.
Root
B.
Stem
C.
Fruit
D.
Flower
Ans:
Stem
Explanation :
Turmeric is the rhizome or underground stern of a ginger-like plant. The whole turmeric is a tuberous rhizome, with a rough, segmented skin.
[17] Genes, the hereditary units, are located in the -
A.
nuclear membrane
B.
chromosomes
C.
lysosomes
D.
cell membrane
Ans:
chromosomes
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. Chromosomal DNA encodes most or all of an organism's genetic information; some species also contain plastids or other extra-chromosomal genetic elements.
[18] Which of these is a modified underground stem?
A.
Radish
B.
Carrot
C.
Sweet Potato
D.
Potato
Ans:
Potato
Explanation :
Underground stems are modified plant structures that derive from stem tissue but exist under the soil surface. Seedlings develop two structures or axes of growth, one that develops upward out of the soil, called stems, and structures that develop downward which are called roots. Potato is such a modified underground stern.
[19] The food conducting tissue of a plant is -
A.
Phloem
B.
Xylem
C.
Parenchyma
D.
Collenchyma
Ans:
Phloem
Explanation :
In vascular plants, phloem is the living tissue that carries organic nutrients, in particular, sucrose, a sugar, to all parts of the plant where needed. In trees, the phloem is the innermost layer of the bark. The phloem is concerned mainly with the transport of soluble organic material made during photosynthesis. This is called translocation.
[20] Opium is a plant product obtained from -
A.
dried leaves
B.
dried latex
C.
roots
D.
stem bark
Ans:
dried latex
Explanation :
Opium is the dried latex obtained from the opium poppy. Opium contains approximately 12% morphine, an alkaloid, which is frequently processed chemically to produce heroin for the illegal drug trade. The latex also includes codeine and non-narcotic alkaloids such as papaverine, thebaine and noscapine.
[21] Drying oils contain a fairly large proportion of -
A.
fats
B.
proteins
C.
saturated fatty acids
D.
unsaturated fatty acids
Ans:
unsaturated fatty acids
Explanation :
They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.
[22] Crabs belongs to the phylum -
A.
Mollusca
B.
Cnidaria
C.
Arthropoda
D.
Platyhelminthes
Ans:
Arthropoda
Explanation :
Crabs come from the same family as lobsters, crayfish, shrimp, krill and barnacles, as all are in the subphylum crustacea. They are also in the phylum Arthropoda.
[23] Clove is a -
A.
Dried flower bud
B.
Flower
C.
Fruit
D.
Seed
Ans:
Dried flower bud
Explanation :
A bud is a structure on a plant, often round, that encloses an undeveloped flower or leaf. All buds can be harvested and dried; some are used as spices.
[24] Dormancy period of animals during winter season is called -
A.
Aestivation
B.
Hibernation
C.
Regeneration
D.
Mutation
Ans:
Hibernation
Explanation :
Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate. Often associated with cold temperatures, the purpose of hibernation is to conserve energy during a period when sufficient food is scarce.
[25] Breeding and management of bees is known as -
A.
Sericulture
B.
Silviculture
C.
Pisciculture
D.
Apiculture
Ans:
Apiculture
Explanation :
Beekeeping (or apiculture, from Latin api8, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.
Explanation :
With a few exceptions, all mammals and birds are warm-blooded, and all reptiles, insects, arachnids, amphibians and fish are cold-blooded. Bat is a mammal. Warm-blooded creatures, like mammals and birds, try to keep the inside of their bodies at a constant temperature. They do this by generating their own heat when they are in a cooler environment, and by cooling themselves when they are in a hotter environment.
[4] Which of the following is the hardest substance in the human body?
A.
Bone
B.
Enamel
C.
Dentine
D.
Nail
Ans:
Enamel
Explanation :
Tooth enamel, along with dentin, cementum, and dental pulp is one of the four major tissues that make up the tooth in vertebrates. It is the hardest and most highly mineralized substance in the human body. It has approximately 95% calcium concentration.
[5] Which of the following is a coldblooded animal?
A.
Pigeon
B.
Tortoise
C.
Fox
D.
Goat
Ans:
Tortoise
Explanation :
Tortoises are cold blooded reptiles and req heat, which they regulate by moving in and of the sun during the day. A tortoise can maintain A higher body temperature in the wild at night by digging into soil which has been heated by the sun during the day.
[6] The membrane covering the lungs is a -
A.
pleura
B.
pericardium
C.
peritoneum
D.
mesothelium
Ans:
pleura
Explanation :
In human anatomy, the pleural cavity is the potential space between the two pleura (visceral and parietal) of the lungs. The pleura are a membrane which folds back onto itself to form a two-layered, membrane structure. The thin space between the two pleural layers is known as the pleural cavity; it normally contains a small amount of pleural fluid.
[7] Ascent of sap in plants takes place through -
A.
Pith
B.
Phloem
C.
Cambium
D.
Xylem
Ans:
Xylem
Explanation :
The ascent of sap in the xylem tissue of plants is the upward movement of water from the root to the crown. Xylem is a complex tissue consisting of living and non-living cells. The conducting cells in xylem are typically non-living and include, in various groups of plants, vessels members and tracheids.
[8] A plant with fibrous root system is -
A.
Wheat
B.
Pea
C.
Mustard
D.
Bean
Ans:
Wheat
Explanation :
A fibrous root system (sometimes also called adventitious root system) is the opposite of a taproot system. It is usually formed by thin, moderately branching roots growing from the stem. A fibrous root system is universal in monocotyledonous plants and ferns. Grass, bamboo, banana, rice, wheat, and most of the plants with monocotyledons have fibrous root system.
[9] Haemoglobin is a -
A.
protein
B.
carbohydrate
C.
fat
D.
vitamin
Ans:
protein
Explanation :
Hemoglobin is the iron-containing oxygen-transport metal-protein in the red blood cells of all vertebrates which carries oxygen from the respiratory organs (lungs or gills) to the rest of the body (i.e, the tissues) where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[10] Why death of fish is more common during summer than in winter? It is because of -
A.
shortage of food
B.
concentration of toxins
C.
depletion of oxygen
D.
spread of diseases
Ans:
depletion of oxygen
Explanation :
Fish die more in summer due to oxygen depletion which refers to low levels of dissolved oxygen (DO) in water. Warm water is much less capable of holding oxygen has in solution than cool water. For example, water that is 900 F can only hold 7.4 mg/L DO at saturation, whereas water that is 450 F can hold 11.9 mg/L DO at saturation. This physical phenomenon puts the fish in double jeopardy because at high water temperatures their metabolic rates increase, hence their physiologic demand for oxygen increases.
[11] Which of the following groups of organisms reproduce faster?
A.
Algae
B.
Fungi
C.
Bacteria
D.
Protozoa
Ans:
Bacteria
Explanation :
Unlike in multicellular organisms, increases in cell size (cell growth and reproduction by cell division) are tightly linked in unicellular organisms. Bacteria grow to a fixed size and then reproduce through binary fission, a form of asexual reproduction. Under optimal conditions, bacteria can grow and divide extremely rapidly, and bacterial populations can double as quickly as every 9.8 minutes.
[12] Normal blood pressure of man is -
A.
80/120 mm Hg
B.
90/140 mm Hg
C.
120/160 mm Hg
D.
85/150 mm Hg
Ans:
80/120 mm Hg
Explanation :
Normal blood pressure is considered to be anything below 120/80. Prehypertension is defined as a systolic reading between 120 and 129 and a diastolic reading lower than 80. Hypertension is defined as blood pressure of 130/80 or higher.
[13] Which of the following stores glycogen?
A.
Spleen
B.
Pancreas
C.
Gastric glands
D.
Liver
Ans:
Liver
Explanation :
Glycogen, the major reservoir of carbohydrate in the body, is comprised of long chain polymers of glucose molecules. The body stores approximately 450-550 grams of glycogen within the muscle and liver for use during exercise. At higher exercise intensities, glycogen becomes the main fuel utilized. Depletion of liver glycogen has the consequence of diminishing liver glucose output, and blood glucose concentrations accordingly.
[14] The form of carbohydrate which is synthesized in plants is -
A.
Starch
B.
Glucose
C.
Fructose
D.
Cellulose
Ans:
Glucose
Explanation :
Carbohydrates are initially synthesized in plants from a complex series of reactions involving photosynthesis. The simplified version of this chemical reaction is to utilize carbon dioxide molecules from the air and water molecules and the energy from the sun to produce a simple sugar such as glucose and oxygen molecules as a byproduct.
[15] Which of the following diseases is caused by a virus?
A.
Influenza
B.
Pneumonia
C.
Cholera
D.
Whooping cough
Ans:
Influenza
Explanation :
Influenza, commonly known as the 'flue, is an infectious disease of birds and mammals caused by RNA viruses. The most common symptoms are chills, fever, sore throat, muscle pains, headache (often severe), coughing, weakness /fatigue and general discomfort. Typically, influenza is transmitted through the air by coughs or sneezes, creating aerosols containing the virus.
[16] From which part of a plant is turmeric obtained?
A.
Root
B.
Stem
C.
Fruit
D.
Flower
Ans:
Stem
Explanation :
Turmeric is the rhizome or underground stern of a ginger-like plant. The whole turmeric is a tuberous rhizome, with a rough, segmented skin.
[17] Genes, the hereditary units, are located in the -
A.
nuclear membrane
B.
chromosomes
C.
lysosomes
D.
cell membrane
Ans:
chromosomes
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. Chromosomal DNA encodes most or all of an organism's genetic information; some species also contain plastids or other extra-chromosomal genetic elements.
[18] Which of these is a modified underground stem?
A.
Radish
B.
Carrot
C.
Sweet Potato
D.
Potato
Ans:
Potato
Explanation :
Underground stems are modified plant structures that derive from stem tissue but exist under the soil surface. Seedlings develop two structures or axes of growth, one that develops upward out of the soil, called stems, and structures that develop downward which are called roots. Potato is such a modified underground stern.
[19] The food conducting tissue of a plant is -
A.
Phloem
B.
Xylem
C.
Parenchyma
D.
Collenchyma
Ans:
Phloem
Explanation :
In vascular plants, phloem is the living tissue that carries organic nutrients, in particular, sucrose, a sugar, to all parts of the plant where needed. In trees, the phloem is the innermost layer of the bark. The phloem is concerned mainly with the transport of soluble organic material made during photosynthesis. This is called translocation.
[20] Opium is a plant product obtained from -
A.
dried leaves
B.
dried latex
C.
roots
D.
stem bark
Ans:
dried latex
Explanation :
Opium is the dried latex obtained from the opium poppy. Opium contains approximately 12% morphine, an alkaloid, which is frequently processed chemically to produce heroin for the illegal drug trade. The latex also includes codeine and non-narcotic alkaloids such as papaverine, thebaine and noscapine.
[21] Drying oils contain a fairly large proportion of -
A.
fats
B.
proteins
C.
saturated fatty acids
D.
unsaturated fatty acids
Ans:
unsaturated fatty acids
Explanation :
They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.
[22] Crabs belongs to the phylum -
A.
Mollusca
B.
Cnidaria
C.
Arthropoda
D.
Platyhelminthes
Ans:
Arthropoda
Explanation :
Crabs come from the same family as lobsters, crayfish, shrimp, krill and barnacles, as all are in the subphylum crustacea. They are also in the phylum Arthropoda.
[23] Clove is a -
A.
Dried flower bud
B.
Flower
C.
Fruit
D.
Seed
Ans:
Dried flower bud
Explanation :
A bud is a structure on a plant, often round, that encloses an undeveloped flower or leaf. All buds can be harvested and dried; some are used as spices.
[24] Dormancy period of animals during winter season is called -
A.
Aestivation
B.
Hibernation
C.
Regeneration
D.
Mutation
Ans:
Hibernation
Explanation :
Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate. Often associated with cold temperatures, the purpose of hibernation is to conserve energy during a period when sufficient food is scarce.
[25] Breeding and management of bees is known as -
A.
Sericulture
B.
Silviculture
C.
Pisciculture
D.
Apiculture
Ans:
Apiculture
Explanation :
Beekeeping (or apiculture, from Latin api8, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.
Explanation :
Tortoises are cold blooded reptiles and req heat, which they regulate by moving in and of the sun during the day. A tortoise can maintain A higher body temperature in the wild at night by digging into soil which has been heated by the sun during the day.
[6] The membrane covering the lungs is a -
A.
pleura
B.
pericardium
C.
peritoneum
D.
mesothelium
Ans:
pleura
Explanation :
In human anatomy, the pleural cavity is the potential space between the two pleura (visceral and parietal) of the lungs. The pleura are a membrane which folds back onto itself to form a two-layered, membrane structure. The thin space between the two pleural layers is known as the pleural cavity; it normally contains a small amount of pleural fluid.
[7] Ascent of sap in plants takes place through -
A.
Pith
B.
Phloem
C.
Cambium
D.
Xylem
Ans:
Xylem
Explanation :
The ascent of sap in the xylem tissue of plants is the upward movement of water from the root to the crown. Xylem is a complex tissue consisting of living and non-living cells. The conducting cells in xylem are typically non-living and include, in various groups of plants, vessels members and tracheids.
[8] A plant with fibrous root system is -
A.
Wheat
B.
Pea
C.
Mustard
D.
Bean
Ans:
Wheat
Explanation :
A fibrous root system (sometimes also called adventitious root system) is the opposite of a taproot system. It is usually formed by thin, moderately branching roots growing from the stem. A fibrous root system is universal in monocotyledonous plants and ferns. Grass, bamboo, banana, rice, wheat, and most of the plants with monocotyledons have fibrous root system.
[9] Haemoglobin is a -
A.
protein
B.
carbohydrate
C.
fat
D.
vitamin
Ans:
protein
Explanation :
Hemoglobin is the iron-containing oxygen-transport metal-protein in the red blood cells of all vertebrates which carries oxygen from the respiratory organs (lungs or gills) to the rest of the body (i.e, the tissues) where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[10] Why death of fish is more common during summer than in winter? It is because of -
A.
shortage of food
B.
concentration of toxins
C.
depletion of oxygen
D.
spread of diseases
Ans:
depletion of oxygen
Explanation :
Fish die more in summer due to oxygen depletion which refers to low levels of dissolved oxygen (DO) in water. Warm water is much less capable of holding oxygen has in solution than cool water. For example, water that is 900 F can only hold 7.4 mg/L DO at saturation, whereas water that is 450 F can hold 11.9 mg/L DO at saturation. This physical phenomenon puts the fish in double jeopardy because at high water temperatures their metabolic rates increase, hence their physiologic demand for oxygen increases.
[11] Which of the following groups of organisms reproduce faster?
A.
Algae
B.
Fungi
C.
Bacteria
D.
Protozoa
Ans:
Bacteria
Explanation :
Unlike in multicellular organisms, increases in cell size (cell growth and reproduction by cell division) are tightly linked in unicellular organisms. Bacteria grow to a fixed size and then reproduce through binary fission, a form of asexual reproduction. Under optimal conditions, bacteria can grow and divide extremely rapidly, and bacterial populations can double as quickly as every 9.8 minutes.
[12] Normal blood pressure of man is -
A.
80/120 mm Hg
B.
90/140 mm Hg
C.
120/160 mm Hg
D.
85/150 mm Hg
Ans:
80/120 mm Hg
Explanation :
Normal blood pressure is considered to be anything below 120/80. Prehypertension is defined as a systolic reading between 120 and 129 and a diastolic reading lower than 80. Hypertension is defined as blood pressure of 130/80 or higher.
[13] Which of the following stores glycogen?
A.
Spleen
B.
Pancreas
C.
Gastric glands
D.
Liver
Ans:
Liver
Explanation :
Glycogen, the major reservoir of carbohydrate in the body, is comprised of long chain polymers of glucose molecules. The body stores approximately 450-550 grams of glycogen within the muscle and liver for use during exercise. At higher exercise intensities, glycogen becomes the main fuel utilized. Depletion of liver glycogen has the consequence of diminishing liver glucose output, and blood glucose concentrations accordingly.
[14] The form of carbohydrate which is synthesized in plants is -
A.
Starch
B.
Glucose
C.
Fructose
D.
Cellulose
Ans:
Glucose
Explanation :
Carbohydrates are initially synthesized in plants from a complex series of reactions involving photosynthesis. The simplified version of this chemical reaction is to utilize carbon dioxide molecules from the air and water molecules and the energy from the sun to produce a simple sugar such as glucose and oxygen molecules as a byproduct.
[15] Which of the following diseases is caused by a virus?
A.
Influenza
B.
Pneumonia
C.
Cholera
D.
Whooping cough
Ans:
Influenza
Explanation :
Influenza, commonly known as the 'flue, is an infectious disease of birds and mammals caused by RNA viruses. The most common symptoms are chills, fever, sore throat, muscle pains, headache (often severe), coughing, weakness /fatigue and general discomfort. Typically, influenza is transmitted through the air by coughs or sneezes, creating aerosols containing the virus.
[16] From which part of a plant is turmeric obtained?
A.
Root
B.
Stem
C.
Fruit
D.
Flower
Ans:
Stem
Explanation :
Turmeric is the rhizome or underground stern of a ginger-like plant. The whole turmeric is a tuberous rhizome, with a rough, segmented skin.
[17] Genes, the hereditary units, are located in the -
A.
nuclear membrane
B.
chromosomes
C.
lysosomes
D.
cell membrane
Ans:
chromosomes
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. Chromosomal DNA encodes most or all of an organism's genetic information; some species also contain plastids or other extra-chromosomal genetic elements.
[18] Which of these is a modified underground stem?
A.
Radish
B.
Carrot
C.
Sweet Potato
D.
Potato
Ans:
Potato
Explanation :
Underground stems are modified plant structures that derive from stem tissue but exist under the soil surface. Seedlings develop two structures or axes of growth, one that develops upward out of the soil, called stems, and structures that develop downward which are called roots. Potato is such a modified underground stern.
[19] The food conducting tissue of a plant is -
A.
Phloem
B.
Xylem
C.
Parenchyma
D.
Collenchyma
Ans:
Phloem
Explanation :
In vascular plants, phloem is the living tissue that carries organic nutrients, in particular, sucrose, a sugar, to all parts of the plant where needed. In trees, the phloem is the innermost layer of the bark. The phloem is concerned mainly with the transport of soluble organic material made during photosynthesis. This is called translocation.
[20] Opium is a plant product obtained from -
A.
dried leaves
B.
dried latex
C.
roots
D.
stem bark
Ans:
dried latex
Explanation :
Opium is the dried latex obtained from the opium poppy. Opium contains approximately 12% morphine, an alkaloid, which is frequently processed chemically to produce heroin for the illegal drug trade. The latex also includes codeine and non-narcotic alkaloids such as papaverine, thebaine and noscapine.
[21] Drying oils contain a fairly large proportion of -
A.
fats
B.
proteins
C.
saturated fatty acids
D.
unsaturated fatty acids
Ans:
unsaturated fatty acids
Explanation :
They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.
[22] Crabs belongs to the phylum -
A.
Mollusca
B.
Cnidaria
C.
Arthropoda
D.
Platyhelminthes
Ans:
Arthropoda
Explanation :
Crabs come from the same family as lobsters, crayfish, shrimp, krill and barnacles, as all are in the subphylum crustacea. They are also in the phylum Arthropoda.
[23] Clove is a -
A.
Dried flower bud
B.
Flower
C.
Fruit
D.
Seed
Ans:
Dried flower bud
Explanation :
A bud is a structure on a plant, often round, that encloses an undeveloped flower or leaf. All buds can be harvested and dried; some are used as spices.
[24] Dormancy period of animals during winter season is called -
A.
Aestivation
B.
Hibernation
C.
Regeneration
D.
Mutation
Ans:
Hibernation
Explanation :
Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate. Often associated with cold temperatures, the purpose of hibernation is to conserve energy during a period when sufficient food is scarce.
[25] Breeding and management of bees is known as -
A.
Sericulture
B.
Silviculture
C.
Pisciculture
D.
Apiculture
Ans:
Apiculture
Explanation :
Beekeeping (or apiculture, from Latin api8, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.
Explanation :
The ascent of sap in the xylem tissue of plants is the upward movement of water from the root to the crown. Xylem is a complex tissue consisting of living and non-living cells. The conducting cells in xylem are typically non-living and include, in various groups of plants, vessels members and tracheids.
[8] A plant with fibrous root system is -
A.
Wheat
B.
Pea
C.
Mustard
D.
Bean
Ans:
Wheat
Explanation :
A fibrous root system (sometimes also called adventitious root system) is the opposite of a taproot system. It is usually formed by thin, moderately branching roots growing from the stem. A fibrous root system is universal in monocotyledonous plants and ferns. Grass, bamboo, banana, rice, wheat, and most of the plants with monocotyledons have fibrous root system.
[9] Haemoglobin is a -
A.
protein
B.
carbohydrate
C.
fat
D.
vitamin
Ans:
protein
Explanation :
Hemoglobin is the iron-containing oxygen-transport metal-protein in the red blood cells of all vertebrates which carries oxygen from the respiratory organs (lungs or gills) to the rest of the body (i.e, the tissues) where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[10] Why death of fish is more common during summer than in winter? It is because of -
A.
shortage of food
B.
concentration of toxins
C.
depletion of oxygen
D.
spread of diseases
Ans:
depletion of oxygen
Explanation :
Fish die more in summer due to oxygen depletion which refers to low levels of dissolved oxygen (DO) in water. Warm water is much less capable of holding oxygen has in solution than cool water. For example, water that is 900 F can only hold 7.4 mg/L DO at saturation, whereas water that is 450 F can hold 11.9 mg/L DO at saturation. This physical phenomenon puts the fish in double jeopardy because at high water temperatures their metabolic rates increase, hence their physiologic demand for oxygen increases.
[11] Which of the following groups of organisms reproduce faster?
A.
Algae
B.
Fungi
C.
Bacteria
D.
Protozoa
Ans:
Bacteria
Explanation :
Unlike in multicellular organisms, increases in cell size (cell growth and reproduction by cell division) are tightly linked in unicellular organisms. Bacteria grow to a fixed size and then reproduce through binary fission, a form of asexual reproduction. Under optimal conditions, bacteria can grow and divide extremely rapidly, and bacterial populations can double as quickly as every 9.8 minutes.
[12] Normal blood pressure of man is -
A.
80/120 mm Hg
B.
90/140 mm Hg
C.
120/160 mm Hg
D.
85/150 mm Hg
Ans:
80/120 mm Hg
Explanation :
Normal blood pressure is considered to be anything below 120/80. Prehypertension is defined as a systolic reading between 120 and 129 and a diastolic reading lower than 80. Hypertension is defined as blood pressure of 130/80 or higher.
[13] Which of the following stores glycogen?
A.
Spleen
B.
Pancreas
C.
Gastric glands
D.
Liver
Ans:
Liver
Explanation :
Glycogen, the major reservoir of carbohydrate in the body, is comprised of long chain polymers of glucose molecules. The body stores approximately 450-550 grams of glycogen within the muscle and liver for use during exercise. At higher exercise intensities, glycogen becomes the main fuel utilized. Depletion of liver glycogen has the consequence of diminishing liver glucose output, and blood glucose concentrations accordingly.
[14] The form of carbohydrate which is synthesized in plants is -
A.
Starch
B.
Glucose
C.
Fructose
D.
Cellulose
Ans:
Glucose
Explanation :
Carbohydrates are initially synthesized in plants from a complex series of reactions involving photosynthesis. The simplified version of this chemical reaction is to utilize carbon dioxide molecules from the air and water molecules and the energy from the sun to produce a simple sugar such as glucose and oxygen molecules as a byproduct.
[15] Which of the following diseases is caused by a virus?
A.
Influenza
B.
Pneumonia
C.
Cholera
D.
Whooping cough
Ans:
Influenza
Explanation :
Influenza, commonly known as the 'flue, is an infectious disease of birds and mammals caused by RNA viruses. The most common symptoms are chills, fever, sore throat, muscle pains, headache (often severe), coughing, weakness /fatigue and general discomfort. Typically, influenza is transmitted through the air by coughs or sneezes, creating aerosols containing the virus.
[16] From which part of a plant is turmeric obtained?
A.
Root
B.
Stem
C.
Fruit
D.
Flower
Ans:
Stem
Explanation :
Turmeric is the rhizome or underground stern of a ginger-like plant. The whole turmeric is a tuberous rhizome, with a rough, segmented skin.
[17] Genes, the hereditary units, are located in the -
A.
nuclear membrane
B.
chromosomes
C.
lysosomes
D.
cell membrane
Ans:
chromosomes
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. Chromosomal DNA encodes most or all of an organism's genetic information; some species also contain plastids or other extra-chromosomal genetic elements.
[18] Which of these is a modified underground stem?
A.
Radish
B.
Carrot
C.
Sweet Potato
D.
Potato
Ans:
Potato
Explanation :
Underground stems are modified plant structures that derive from stem tissue but exist under the soil surface. Seedlings develop two structures or axes of growth, one that develops upward out of the soil, called stems, and structures that develop downward which are called roots. Potato is such a modified underground stern.
[19] The food conducting tissue of a plant is -
A.
Phloem
B.
Xylem
C.
Parenchyma
D.
Collenchyma
Ans:
Phloem
Explanation :
In vascular plants, phloem is the living tissue that carries organic nutrients, in particular, sucrose, a sugar, to all parts of the plant where needed. In trees, the phloem is the innermost layer of the bark. The phloem is concerned mainly with the transport of soluble organic material made during photosynthesis. This is called translocation.
[20] Opium is a plant product obtained from -
A.
dried leaves
B.
dried latex
C.
roots
D.
stem bark
Ans:
dried latex
Explanation :
Opium is the dried latex obtained from the opium poppy. Opium contains approximately 12% morphine, an alkaloid, which is frequently processed chemically to produce heroin for the illegal drug trade. The latex also includes codeine and non-narcotic alkaloids such as papaverine, thebaine and noscapine.
[21] Drying oils contain a fairly large proportion of -
A.
fats
B.
proteins
C.
saturated fatty acids
D.
unsaturated fatty acids
Ans:
unsaturated fatty acids
Explanation :
They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.
[22] Crabs belongs to the phylum -
A.
Mollusca
B.
Cnidaria
C.
Arthropoda
D.
Platyhelminthes
Ans:
Arthropoda
Explanation :
Crabs come from the same family as lobsters, crayfish, shrimp, krill and barnacles, as all are in the subphylum crustacea. They are also in the phylum Arthropoda.
[23] Clove is a -
A.
Dried flower bud
B.
Flower
C.
Fruit
D.
Seed
Ans:
Dried flower bud
Explanation :
A bud is a structure on a plant, often round, that encloses an undeveloped flower or leaf. All buds can be harvested and dried; some are used as spices.
[24] Dormancy period of animals during winter season is called -
A.
Aestivation
B.
Hibernation
C.
Regeneration
D.
Mutation
Ans:
Hibernation
Explanation :
Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate. Often associated with cold temperatures, the purpose of hibernation is to conserve energy during a period when sufficient food is scarce.
[25] Breeding and management of bees is known as -
A.
Sericulture
B.
Silviculture
C.
Pisciculture
D.
Apiculture
Ans:
Apiculture
Explanation :
Beekeeping (or apiculture, from Latin api8, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.
Explanation :
Hemoglobin is the iron-containing oxygen-transport metal-protein in the red blood cells of all vertebrates which carries oxygen from the respiratory organs (lungs or gills) to the rest of the body (i.e, the tissues) where it releases the oxygen to burn nutrients to provide energy to power the functions of the organism, and collects the resultant carbon dioxide to bring it back to the respiratory organs to be dispensed from the organism.
[10] Why death of fish is more common during summer than in winter? It is because of -
A.
shortage of food
B.
concentration of toxins
C.
depletion of oxygen
D.
spread of diseases
Ans:
depletion of oxygen
Explanation :
Fish die more in summer due to oxygen depletion which refers to low levels of dissolved oxygen (DO) in water. Warm water is much less capable of holding oxygen has in solution than cool water. For example, water that is 900 F can only hold 7.4 mg/L DO at saturation, whereas water that is 450 F can hold 11.9 mg/L DO at saturation. This physical phenomenon puts the fish in double jeopardy because at high water temperatures their metabolic rates increase, hence their physiologic demand for oxygen increases.
[11] Which of the following groups of organisms reproduce faster?
A.
Algae
B.
Fungi
C.
Bacteria
D.
Protozoa
Ans:
Bacteria
Explanation :
Unlike in multicellular organisms, increases in cell size (cell growth and reproduction by cell division) are tightly linked in unicellular organisms. Bacteria grow to a fixed size and then reproduce through binary fission, a form of asexual reproduction. Under optimal conditions, bacteria can grow and divide extremely rapidly, and bacterial populations can double as quickly as every 9.8 minutes.
[12] Normal blood pressure of man is -
A.
80/120 mm Hg
B.
90/140 mm Hg
C.
120/160 mm Hg
D.
85/150 mm Hg
Ans:
80/120 mm Hg
Explanation :
Normal blood pressure is considered to be anything below 120/80. Prehypertension is defined as a systolic reading between 120 and 129 and a diastolic reading lower than 80. Hypertension is defined as blood pressure of 130/80 or higher.
[13] Which of the following stores glycogen?
A.
Spleen
B.
Pancreas
C.
Gastric glands
D.
Liver
Ans:
Liver
Explanation :
Glycogen, the major reservoir of carbohydrate in the body, is comprised of long chain polymers of glucose molecules. The body stores approximately 450-550 grams of glycogen within the muscle and liver for use during exercise. At higher exercise intensities, glycogen becomes the main fuel utilized. Depletion of liver glycogen has the consequence of diminishing liver glucose output, and blood glucose concentrations accordingly.
[14] The form of carbohydrate which is synthesized in plants is -
A.
Starch
B.
Glucose
C.
Fructose
D.
Cellulose
Ans:
Glucose
Explanation :
Carbohydrates are initially synthesized in plants from a complex series of reactions involving photosynthesis. The simplified version of this chemical reaction is to utilize carbon dioxide molecules from the air and water molecules and the energy from the sun to produce a simple sugar such as glucose and oxygen molecules as a byproduct.
[15] Which of the following diseases is caused by a virus?
A.
Influenza
B.
Pneumonia
C.
Cholera
D.
Whooping cough
Ans:
Influenza
Explanation :
Influenza, commonly known as the 'flue, is an infectious disease of birds and mammals caused by RNA viruses. The most common symptoms are chills, fever, sore throat, muscle pains, headache (often severe), coughing, weakness /fatigue and general discomfort. Typically, influenza is transmitted through the air by coughs or sneezes, creating aerosols containing the virus.
[16] From which part of a plant is turmeric obtained?
A.
Root
B.
Stem
C.
Fruit
D.
Flower
Ans:
Stem
Explanation :
Turmeric is the rhizome or underground stern of a ginger-like plant. The whole turmeric is a tuberous rhizome, with a rough, segmented skin.
[17] Genes, the hereditary units, are located in the -
A.
nuclear membrane
B.
chromosomes
C.
lysosomes
D.
cell membrane
Ans:
chromosomes
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. Chromosomal DNA encodes most or all of an organism's genetic information; some species also contain plastids or other extra-chromosomal genetic elements.
[18] Which of these is a modified underground stem?
A.
Radish
B.
Carrot
C.
Sweet Potato
D.
Potato
Ans:
Potato
Explanation :
Underground stems are modified plant structures that derive from stem tissue but exist under the soil surface. Seedlings develop two structures or axes of growth, one that develops upward out of the soil, called stems, and structures that develop downward which are called roots. Potato is such a modified underground stern.
[19] The food conducting tissue of a plant is -
A.
Phloem
B.
Xylem
C.
Parenchyma
D.
Collenchyma
Ans:
Phloem
Explanation :
In vascular plants, phloem is the living tissue that carries organic nutrients, in particular, sucrose, a sugar, to all parts of the plant where needed. In trees, the phloem is the innermost layer of the bark. The phloem is concerned mainly with the transport of soluble organic material made during photosynthesis. This is called translocation.
[20] Opium is a plant product obtained from -
A.
dried leaves
B.
dried latex
C.
roots
D.
stem bark
Ans:
dried latex
Explanation :
Opium is the dried latex obtained from the opium poppy. Opium contains approximately 12% morphine, an alkaloid, which is frequently processed chemically to produce heroin for the illegal drug trade. The latex also includes codeine and non-narcotic alkaloids such as papaverine, thebaine and noscapine.
[21] Drying oils contain a fairly large proportion of -
A.
fats
B.
proteins
C.
saturated fatty acids
D.
unsaturated fatty acids
Ans:
unsaturated fatty acids
Explanation :
They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.
[22] Crabs belongs to the phylum -
A.
Mollusca
B.
Cnidaria
C.
Arthropoda
D.
Platyhelminthes
Ans:
Arthropoda
Explanation :
Crabs come from the same family as lobsters, crayfish, shrimp, krill and barnacles, as all are in the subphylum crustacea. They are also in the phylum Arthropoda.
[23] Clove is a -
A.
Dried flower bud
B.
Flower
C.
Fruit
D.
Seed
Ans:
Dried flower bud
Explanation :
A bud is a structure on a plant, often round, that encloses an undeveloped flower or leaf. All buds can be harvested and dried; some are used as spices.
[24] Dormancy period of animals during winter season is called -
A.
Aestivation
B.
Hibernation
C.
Regeneration
D.
Mutation
Ans:
Hibernation
Explanation :
Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate. Often associated with cold temperatures, the purpose of hibernation is to conserve energy during a period when sufficient food is scarce.
[25] Breeding and management of bees is known as -
A.
Sericulture
B.
Silviculture
C.
Pisciculture
D.
Apiculture
Ans:
Apiculture
Explanation :
Beekeeping (or apiculture, from Latin api8, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.
Explanation :
Unlike in multicellular organisms, increases in cell size (cell growth and reproduction by cell division) are tightly linked in unicellular organisms. Bacteria grow to a fixed size and then reproduce through binary fission, a form of asexual reproduction. Under optimal conditions, bacteria can grow and divide extremely rapidly, and bacterial populations can double as quickly as every 9.8 minutes.
[12] Normal blood pressure of man is -
A.
80/120 mm Hg
B.
90/140 mm Hg
C.
120/160 mm Hg
D.
85/150 mm Hg
Ans:
80/120 mm Hg
Explanation :
Normal blood pressure is considered to be anything below 120/80. Prehypertension is defined as a systolic reading between 120 and 129 and a diastolic reading lower than 80. Hypertension is defined as blood pressure of 130/80 or higher.
[13] Which of the following stores glycogen?
A.
Spleen
B.
Pancreas
C.
Gastric glands
D.
Liver
Ans:
Liver
Explanation :
Glycogen, the major reservoir of carbohydrate in the body, is comprised of long chain polymers of glucose molecules. The body stores approximately 450-550 grams of glycogen within the muscle and liver for use during exercise. At higher exercise intensities, glycogen becomes the main fuel utilized. Depletion of liver glycogen has the consequence of diminishing liver glucose output, and blood glucose concentrations accordingly.
[14] The form of carbohydrate which is synthesized in plants is -
A.
Starch
B.
Glucose
C.
Fructose
D.
Cellulose
Ans:
Glucose
Explanation :
Carbohydrates are initially synthesized in plants from a complex series of reactions involving photosynthesis. The simplified version of this chemical reaction is to utilize carbon dioxide molecules from the air and water molecules and the energy from the sun to produce a simple sugar such as glucose and oxygen molecules as a byproduct.
[15] Which of the following diseases is caused by a virus?
A.
Influenza
B.
Pneumonia
C.
Cholera
D.
Whooping cough
Ans:
Influenza
Explanation :
Influenza, commonly known as the 'flue, is an infectious disease of birds and mammals caused by RNA viruses. The most common symptoms are chills, fever, sore throat, muscle pains, headache (often severe), coughing, weakness /fatigue and general discomfort. Typically, influenza is transmitted through the air by coughs or sneezes, creating aerosols containing the virus.
[16] From which part of a plant is turmeric obtained?
A.
Root
B.
Stem
C.
Fruit
D.
Flower
Ans:
Stem
Explanation :
Turmeric is the rhizome or underground stern of a ginger-like plant. The whole turmeric is a tuberous rhizome, with a rough, segmented skin.
[17] Genes, the hereditary units, are located in the -
A.
nuclear membrane
B.
chromosomes
C.
lysosomes
D.
cell membrane
Ans:
chromosomes
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. Chromosomal DNA encodes most or all of an organism's genetic information; some species also contain plastids or other extra-chromosomal genetic elements.
[18] Which of these is a modified underground stem?
A.
Radish
B.
Carrot
C.
Sweet Potato
D.
Potato
Ans:
Potato
Explanation :
Underground stems are modified plant structures that derive from stem tissue but exist under the soil surface. Seedlings develop two structures or axes of growth, one that develops upward out of the soil, called stems, and structures that develop downward which are called roots. Potato is such a modified underground stern.
[19] The food conducting tissue of a plant is -
A.
Phloem
B.
Xylem
C.
Parenchyma
D.
Collenchyma
Ans:
Phloem
Explanation :
In vascular plants, phloem is the living tissue that carries organic nutrients, in particular, sucrose, a sugar, to all parts of the plant where needed. In trees, the phloem is the innermost layer of the bark. The phloem is concerned mainly with the transport of soluble organic material made during photosynthesis. This is called translocation.
[20] Opium is a plant product obtained from -
A.
dried leaves
B.
dried latex
C.
roots
D.
stem bark
Ans:
dried latex
Explanation :
Opium is the dried latex obtained from the opium poppy. Opium contains approximately 12% morphine, an alkaloid, which is frequently processed chemically to produce heroin for the illegal drug trade. The latex also includes codeine and non-narcotic alkaloids such as papaverine, thebaine and noscapine.
[21] Drying oils contain a fairly large proportion of -
A.
fats
B.
proteins
C.
saturated fatty acids
D.
unsaturated fatty acids
Ans:
unsaturated fatty acids
Explanation :
They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.
[22] Crabs belongs to the phylum -
A.
Mollusca
B.
Cnidaria
C.
Arthropoda
D.
Platyhelminthes
Ans:
Arthropoda
Explanation :
Crabs come from the same family as lobsters, crayfish, shrimp, krill and barnacles, as all are in the subphylum crustacea. They are also in the phylum Arthropoda.
[23] Clove is a -
A.
Dried flower bud
B.
Flower
C.
Fruit
D.
Seed
Ans:
Dried flower bud
Explanation :
A bud is a structure on a plant, often round, that encloses an undeveloped flower or leaf. All buds can be harvested and dried; some are used as spices.
[24] Dormancy period of animals during winter season is called -
A.
Aestivation
B.
Hibernation
C.
Regeneration
D.
Mutation
Ans:
Hibernation
Explanation :
Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate. Often associated with cold temperatures, the purpose of hibernation is to conserve energy during a period when sufficient food is scarce.
[25] Breeding and management of bees is known as -
A.
Sericulture
B.
Silviculture
C.
Pisciculture
D.
Apiculture
Ans:
Apiculture
Explanation :
Beekeeping (or apiculture, from Latin api8, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.
Explanation :
Glycogen, the major reservoir of carbohydrate in the body, is comprised of long chain polymers of glucose molecules. The body stores approximately 450-550 grams of glycogen within the muscle and liver for use during exercise. At higher exercise intensities, glycogen becomes the main fuel utilized. Depletion of liver glycogen has the consequence of diminishing liver glucose output, and blood glucose concentrations accordingly.
[14] The form of carbohydrate which is synthesized in plants is -
A.
Starch
B.
Glucose
C.
Fructose
D.
Cellulose
Ans:
Glucose
Explanation :
Carbohydrates are initially synthesized in plants from a complex series of reactions involving photosynthesis. The simplified version of this chemical reaction is to utilize carbon dioxide molecules from the air and water molecules and the energy from the sun to produce a simple sugar such as glucose and oxygen molecules as a byproduct.
[15] Which of the following diseases is caused by a virus?
A.
Influenza
B.
Pneumonia
C.
Cholera
D.
Whooping cough
Ans:
Influenza
Explanation :
Influenza, commonly known as the 'flue, is an infectious disease of birds and mammals caused by RNA viruses. The most common symptoms are chills, fever, sore throat, muscle pains, headache (often severe), coughing, weakness /fatigue and general discomfort. Typically, influenza is transmitted through the air by coughs or sneezes, creating aerosols containing the virus.
[16] From which part of a plant is turmeric obtained?
A.
Root
B.
Stem
C.
Fruit
D.
Flower
Ans:
Stem
Explanation :
Turmeric is the rhizome or underground stern of a ginger-like plant. The whole turmeric is a tuberous rhizome, with a rough, segmented skin.
[17] Genes, the hereditary units, are located in the -
A.
nuclear membrane
B.
chromosomes
C.
lysosomes
D.
cell membrane
Ans:
chromosomes
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. Chromosomal DNA encodes most or all of an organism's genetic information; some species also contain plastids or other extra-chromosomal genetic elements.
[18] Which of these is a modified underground stem?
A.
Radish
B.
Carrot
C.
Sweet Potato
D.
Potato
Ans:
Potato
Explanation :
Underground stems are modified plant structures that derive from stem tissue but exist under the soil surface. Seedlings develop two structures or axes of growth, one that develops upward out of the soil, called stems, and structures that develop downward which are called roots. Potato is such a modified underground stern.
[19] The food conducting tissue of a plant is -
A.
Phloem
B.
Xylem
C.
Parenchyma
D.
Collenchyma
Ans:
Phloem
Explanation :
In vascular plants, phloem is the living tissue that carries organic nutrients, in particular, sucrose, a sugar, to all parts of the plant where needed. In trees, the phloem is the innermost layer of the bark. The phloem is concerned mainly with the transport of soluble organic material made during photosynthesis. This is called translocation.
[20] Opium is a plant product obtained from -
A.
dried leaves
B.
dried latex
C.
roots
D.
stem bark
Ans:
dried latex
Explanation :
Opium is the dried latex obtained from the opium poppy. Opium contains approximately 12% morphine, an alkaloid, which is frequently processed chemically to produce heroin for the illegal drug trade. The latex also includes codeine and non-narcotic alkaloids such as papaverine, thebaine and noscapine.
[21] Drying oils contain a fairly large proportion of -
A.
fats
B.
proteins
C.
saturated fatty acids
D.
unsaturated fatty acids
Ans:
unsaturated fatty acids
Explanation :
They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.
[22] Crabs belongs to the phylum -
A.
Mollusca
B.
Cnidaria
C.
Arthropoda
D.
Platyhelminthes
Ans:
Arthropoda
Explanation :
Crabs come from the same family as lobsters, crayfish, shrimp, krill and barnacles, as all are in the subphylum crustacea. They are also in the phylum Arthropoda.
[23] Clove is a -
A.
Dried flower bud
B.
Flower
C.
Fruit
D.
Seed
Ans:
Dried flower bud
Explanation :
A bud is a structure on a plant, often round, that encloses an undeveloped flower or leaf. All buds can be harvested and dried; some are used as spices.
[24] Dormancy period of animals during winter season is called -
A.
Aestivation
B.
Hibernation
C.
Regeneration
D.
Mutation
Ans:
Hibernation
Explanation :
Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate. Often associated with cold temperatures, the purpose of hibernation is to conserve energy during a period when sufficient food is scarce.
[25] Breeding and management of bees is known as -
A.
Sericulture
B.
Silviculture
C.
Pisciculture
D.
Apiculture
Ans:
Apiculture
Explanation :
Beekeeping (or apiculture, from Latin api8, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.
Explanation :
Influenza, commonly known as the 'flue, is an infectious disease of birds and mammals caused by RNA viruses. The most common symptoms are chills, fever, sore throat, muscle pains, headache (often severe), coughing, weakness /fatigue and general discomfort. Typically, influenza is transmitted through the air by coughs or sneezes, creating aerosols containing the virus.
[16] From which part of a plant is turmeric obtained?
A.
Root
B.
Stem
C.
Fruit
D.
Flower
Ans:
Stem
Explanation :
Turmeric is the rhizome or underground stern of a ginger-like plant. The whole turmeric is a tuberous rhizome, with a rough, segmented skin.
[17] Genes, the hereditary units, are located in the -
A.
nuclear membrane
B.
chromosomes
C.
lysosomes
D.
cell membrane
Ans:
chromosomes
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. Chromosomal DNA encodes most or all of an organism's genetic information; some species also contain plastids or other extra-chromosomal genetic elements.
[18] Which of these is a modified underground stem?
A.
Radish
B.
Carrot
C.
Sweet Potato
D.
Potato
Ans:
Potato
Explanation :
Underground stems are modified plant structures that derive from stem tissue but exist under the soil surface. Seedlings develop two structures or axes of growth, one that develops upward out of the soil, called stems, and structures that develop downward which are called roots. Potato is such a modified underground stern.
[19] The food conducting tissue of a plant is -
A.
Phloem
B.
Xylem
C.
Parenchyma
D.
Collenchyma
Ans:
Phloem
Explanation :
In vascular plants, phloem is the living tissue that carries organic nutrients, in particular, sucrose, a sugar, to all parts of the plant where needed. In trees, the phloem is the innermost layer of the bark. The phloem is concerned mainly with the transport of soluble organic material made during photosynthesis. This is called translocation.
[20] Opium is a plant product obtained from -
A.
dried leaves
B.
dried latex
C.
roots
D.
stem bark
Ans:
dried latex
Explanation :
Opium is the dried latex obtained from the opium poppy. Opium contains approximately 12% morphine, an alkaloid, which is frequently processed chemically to produce heroin for the illegal drug trade. The latex also includes codeine and non-narcotic alkaloids such as papaverine, thebaine and noscapine.
[21] Drying oils contain a fairly large proportion of -
A.
fats
B.
proteins
C.
saturated fatty acids
D.
unsaturated fatty acids
Ans:
unsaturated fatty acids
Explanation :
They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.
[22] Crabs belongs to the phylum -
A.
Mollusca
B.
Cnidaria
C.
Arthropoda
D.
Platyhelminthes
Ans:
Arthropoda
Explanation :
Crabs come from the same family as lobsters, crayfish, shrimp, krill and barnacles, as all are in the subphylum crustacea. They are also in the phylum Arthropoda.
[23] Clove is a -
A.
Dried flower bud
B.
Flower
C.
Fruit
D.
Seed
Ans:
Dried flower bud
Explanation :
A bud is a structure on a plant, often round, that encloses an undeveloped flower or leaf. All buds can be harvested and dried; some are used as spices.
[24] Dormancy period of animals during winter season is called -
A.
Aestivation
B.
Hibernation
C.
Regeneration
D.
Mutation
Ans:
Hibernation
Explanation :
Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate. Often associated with cold temperatures, the purpose of hibernation is to conserve energy during a period when sufficient food is scarce.
[25] Breeding and management of bees is known as -
A.
Sericulture
B.
Silviculture
C.
Pisciculture
D.
Apiculture
Ans:
Apiculture
Explanation :
Beekeeping (or apiculture, from Latin api8, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.
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. Chromosomal DNA encodes most or all of an organism's genetic information; some species also contain plastids or other extra-chromosomal genetic elements.
[18] Which of these is a modified underground stem?
A.
Radish
B.
Carrot
C.
Sweet Potato
D.
Potato
Ans:
Potato
Explanation :
Underground stems are modified plant structures that derive from stem tissue but exist under the soil surface. Seedlings develop two structures or axes of growth, one that develops upward out of the soil, called stems, and structures that develop downward which are called roots. Potato is such a modified underground stern.
[19] The food conducting tissue of a plant is -
A.
Phloem
B.
Xylem
C.
Parenchyma
D.
Collenchyma
Ans:
Phloem
Explanation :
In vascular plants, phloem is the living tissue that carries organic nutrients, in particular, sucrose, a sugar, to all parts of the plant where needed. In trees, the phloem is the innermost layer of the bark. The phloem is concerned mainly with the transport of soluble organic material made during photosynthesis. This is called translocation.
[20] Opium is a plant product obtained from -
A.
dried leaves
B.
dried latex
C.
roots
D.
stem bark
Ans:
dried latex
Explanation :
Opium is the dried latex obtained from the opium poppy. Opium contains approximately 12% morphine, an alkaloid, which is frequently processed chemically to produce heroin for the illegal drug trade. The latex also includes codeine and non-narcotic alkaloids such as papaverine, thebaine and noscapine.
[21] Drying oils contain a fairly large proportion of -
A.
fats
B.
proteins
C.
saturated fatty acids
D.
unsaturated fatty acids
Ans:
unsaturated fatty acids
Explanation :
They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.
[22] Crabs belongs to the phylum -
A.
Mollusca
B.
Cnidaria
C.
Arthropoda
D.
Platyhelminthes
Ans:
Arthropoda
Explanation :
Crabs come from the same family as lobsters, crayfish, shrimp, krill and barnacles, as all are in the subphylum crustacea. They are also in the phylum Arthropoda.
[23] Clove is a -
A.
Dried flower bud
B.
Flower
C.
Fruit
D.
Seed
Ans:
Dried flower bud
Explanation :
A bud is a structure on a plant, often round, that encloses an undeveloped flower or leaf. All buds can be harvested and dried; some are used as spices.
[24] Dormancy period of animals during winter season is called -
A.
Aestivation
B.
Hibernation
C.
Regeneration
D.
Mutation
Ans:
Hibernation
Explanation :
Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate. Often associated with cold temperatures, the purpose of hibernation is to conserve energy during a period when sufficient food is scarce.
[25] Breeding and management of bees is known as -
A.
Sericulture
B.
Silviculture
C.
Pisciculture
D.
Apiculture
Ans:
Apiculture
Explanation :
Beekeeping (or apiculture, from Latin api8, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.
Explanation :
In vascular plants, phloem is the living tissue that carries organic nutrients, in particular, sucrose, a sugar, to all parts of the plant where needed. In trees, the phloem is the innermost layer of the bark. The phloem is concerned mainly with the transport of soluble organic material made during photosynthesis. This is called translocation.
[20] Opium is a plant product obtained from -
A.
dried leaves
B.
dried latex
C.
roots
D.
stem bark
Ans:
dried latex
Explanation :
Opium is the dried latex obtained from the opium poppy. Opium contains approximately 12% morphine, an alkaloid, which is frequently processed chemically to produce heroin for the illegal drug trade. The latex also includes codeine and non-narcotic alkaloids such as papaverine, thebaine and noscapine.
[21] Drying oils contain a fairly large proportion of -
A.
fats
B.
proteins
C.
saturated fatty acids
D.
unsaturated fatty acids
Ans:
unsaturated fatty acids
Explanation :
They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.
[22] Crabs belongs to the phylum -
A.
Mollusca
B.
Cnidaria
C.
Arthropoda
D.
Platyhelminthes
Ans:
Arthropoda
Explanation :
Crabs come from the same family as lobsters, crayfish, shrimp, krill and barnacles, as all are in the subphylum crustacea. They are also in the phylum Arthropoda.
[23] Clove is a -
A.
Dried flower bud
B.
Flower
C.
Fruit
D.
Seed
Ans:
Dried flower bud
Explanation :
A bud is a structure on a plant, often round, that encloses an undeveloped flower or leaf. All buds can be harvested and dried; some are used as spices.
[24] Dormancy period of animals during winter season is called -
A.
Aestivation
B.
Hibernation
C.
Regeneration
D.
Mutation
Ans:
Hibernation
Explanation :
Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate. Often associated with cold temperatures, the purpose of hibernation is to conserve energy during a period when sufficient food is scarce.
[25] Breeding and management of bees is known as -
A.
Sericulture
B.
Silviculture
C.
Pisciculture
D.
Apiculture
Ans:
Apiculture
Explanation :
Beekeeping (or apiculture, from Latin api8, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.
Explanation :
They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.
[22] Crabs belongs to the phylum -
A.
Mollusca
B.
Cnidaria
C.
Arthropoda
D.
Platyhelminthes
Ans:
Arthropoda
Explanation :
Crabs come from the same family as lobsters, crayfish, shrimp, krill and barnacles, as all are in the subphylum crustacea. They are also in the phylum Arthropoda.
[23] Clove is a -
A.
Dried flower bud
B.
Flower
C.
Fruit
D.
Seed
Ans:
Dried flower bud
Explanation :
A bud is a structure on a plant, often round, that encloses an undeveloped flower or leaf. All buds can be harvested and dried; some are used as spices.
[24] Dormancy period of animals during winter season is called -
A.
Aestivation
B.
Hibernation
C.
Regeneration
D.
Mutation
Ans:
Hibernation
Explanation :
Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate. Often associated with cold temperatures, the purpose of hibernation is to conserve energy during a period when sufficient food is scarce.
[25] Breeding and management of bees is known as -
A.
Sericulture
B.
Silviculture
C.
Pisciculture
D.
Apiculture
Ans:
Apiculture
Explanation :
Beekeeping (or apiculture, from Latin api8, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.
Explanation :
A bud is a structure on a plant, often round, that encloses an undeveloped flower or leaf. All buds can be harvested and dried; some are used as spices.
[24] Dormancy period of animals during winter season is called -
A.
Aestivation
B.
Hibernation
C.
Regeneration
D.
Mutation
Ans:
Hibernation
Explanation :
Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate. Often associated with cold temperatures, the purpose of hibernation is to conserve energy during a period when sufficient food is scarce.
[25] Breeding and management of bees is known as -
A.
Sericulture
B.
Silviculture
C.
Pisciculture
D.
Apiculture
Ans:
Apiculture
Explanation :
Beekeeping (or apiculture, from Latin api8, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.
Explanation :
Beekeeping (or apiculture, from Latin api8, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.