Objective General Knowledge [Science — Botany and Zoology]
1. Who propounded the theory of natural selection ?
(A) Mendel (B) Lamarck (C) Darwin (D) De Vries
2. Who, among the following, is associated with the theory of inheritance of acquired characteristics ?
(A) Charles Darwin (B) Lamarck (C) Spencer (D) De Vries
3. On which of the following plants did Gregor Mendel perform his classical experiment ?
(A) Gram (B) Maize (C) Pea (D) Wheat
4. Who, among the following scientists, is associated with the hybridisation of garden pea ?
(A) Robert Brown (B) John Goss (C) Joseph Kolruter (D) Gregor Mendel
5. Which of the following is the smallest functional genetic unit ?
(A) Chromosome (B) Cistron (C) DNA (D) Gene
6. Mitochondria will be found in abundance where there is
(A) A wound activity in the body
(B) Maximum activity in the body
(C) Least activity in the body
(D) Average activity in the body
7. Golgi body is found in
(A) RBC in man (A) All the cells (C) All the cells except RBC and bacteria (D) Only bacterial cells
8. A coenzyme is an
(A) Nucleic acid
(B) Organic compound
(C) Carbohydrate that controls enzymatic activity
(D) Vitamin that acts with an enzyme
9. Which of the following digestive enzymes is present in the saliva ?
(A) Amylase (B) Lipase (C) Ptyalin (D) Trypsin
10. The human liver performs all of the following functions, except
(A) Production of hormones (B) Detoxification of toxins (C) Storage of glycogen (D) Formation of bile
11. What role does enzyme pepsin play ?
(A) It converts fats into acids
(B) It converts fats into glycerol
(C) It converts proteins into peptones
(D) It converts starch into sugar
12. The food in onion is stored in the form of
(A) Cellulose (B) Protein (C) Starch (D) Sugar
13. Who, among the following, is regarded as the Father of Modern Biology ?
(A) Aristotle (B) Darwin (C) Robert Hooke (D) Vesalius
14. Which of the following is studied by Palaeontologists ?
(A) Genes (B) Plants (C) Pollen (D) Fossils
15. The first person to see a cell under microscope was
(A) Robert Hooke (B) A.V Leuwenhock (C) T Schwan (D) M. Schleiden
16. Mitosis actually means
(A) Division of cytoplasm only
(B) Division of nucleus only
(C) Reduction in number of chromosomes
(D) Both nuclear and cytoplasmic division
17. The function of endoplasmic reticulum is
(A) Acrosome formation (B) Lysosome formation (C) Synthesis of steroid hormones (D) Secretion of proteins
18. Mutation is
(A) A factor responsible for plant growth
(B) A change which affects the offspring of F2 generation only
(C) A change that is inherited
(D) A change which affects the parents only but never inherited
19. Edible part of coconut is
(A) Seed coat (B) Endocarp (C) Endosperm (D) Carpel wall
20. Smallest flowering plant is
(A) Rafflesia (B) Polyalthia (C) Wolffia (D) Chlamydomonas
21. In dicot root
(A) Vascular bundles are scattered and are with cambium
(B) Xylem is always enlarged
(C) Xylem and Phloem are radially arranged
(D) Vascular bundles are arranged in a ring and have cambium
22. Grafting is not possible in monocots because
(A) Monocots lack cambium
(B) Monocots have scattered vascular bundles
(C) Monocots have parallel venation
(D) Monocots are herbaceous
23. Industrial timber can be obtained from the plants of family
(A) Solanaceae (B) Cruciferae (C) Leguminosae (D) Liliaceae
24. Cotton fibres are made of
(A) Cellulose (B) Starch (C) Proteins (D) Fats
25. Fertilisation is the process of
(A) Fusion of male nucleus with polar nuclei
(B) Formation of seed from ovule
(C) Fusion of one male gamete with the egg
(D) Transfer of pollen from anther to stigma
26. The cotyledons form the first pair of leaves in
(A) Pea (B) Wheat (C) Maize (D) Castor
27. Pollination is best defined as
(A) Transfer of pollen from anther to stigma
(B) Germination of pollen grains
(C) Growth of pollen tube in ovule
(D) Visiting flowers by insects
28. Which of the following statements in regard to respiration and photosynthesis in plants is correct ?
(A) Both proceed at the same rate
(B) Photosynthesis proceeds at a much faster rate than respiration
(C) Photosynthesis proceeds at a much slower rate than respiration
(D) There is no connection between the two
29. What role does chlorophyll perform in the process of photosynthesis ?
(A) It absorbs light and decomposes water photochemically
(B) It accepts electrons from oxygen
(C) It accepts electrons from CO2
(D) It absorbs light only
30. Ligaments and tendons in the body are composed of —— tissue
(A) Connective (B) Epithelial (C) Muscular (D) Skeletal
31. The process by which the blood carries the absorbed food products to the tissue cells, where they are taken up, is called
(A) Absorption (B) Assimilation (C) Digestion (D) Ingestion
32. What are cold-blooded animals ?
(A) Animals whose blood is cold
(B) Animals who are ferocious
(C) Animals whose body temperature varies according to the temperature of atmosphere
(D) Animals whose body temperature remains constant
33. Which of the following parts of the skeleton protects the spinal cord ?
(A) Auditory capsule (B) Cranium (C) Olfactory capsule (D) Vertebral column
34. Which of the following is not a constituent of DNA molecule ?
(A) Adenine (B) Cytosine (C) Thymine (D) Uracil
35. All of the following are constituents of RNA molecule, except
(A) Adenine (B) Guanine (C) Thymine (D) Uracil
36. When the right ventricle in the human heart contracts, the blood moves to
(A) Aorta (B) Brain (C) Lungs (D) Pulmonary arteries
37. Artificial light can
(A) Destroy chlorophyll
(B) Synthesise chlorophyll
(C) Bring about photosynthesis
(D) Not bring about photosynthesis
38. Pedology is the study of
(A) Soil (B) Locomotion of animals (C) Rocks (D) Crop disease
39. The stem of water plants usually have
(A) A well-developed aerenchyma
(B) A well-developed stomatal system
(C) A well-developed vascular system
(D) A well-developed root system
40. Deforestation has an alarming effect on
(A) Increase in grazing area (B) Sunlight (C) Weed control (D) Soil erosion
41. Plants are killed in winter by frost
(A) Because of desiccation and mechanical damage to the tissues
(B) Because no photosynthesis takes place at such low temperature
(C) Because respiration ceases at such low temperature
(D) Because there is no transpiration
42. Aquatic plants with floating leaves
(A) Do not have stomata
(B) Have stomata on both surfaces
(C) Have stomata on lower surface
(D) Have stomata only on upper surface
43. An important event in the creation of life seems to be the formation of
(A) Proteins (B) Sugar (C) Amino acids (D) Nucleic acids
44. The one which does not belong to underground stem vegetable is
(A) Onion (B) Garlic (C) Kachalu (D) Sugar beet
45. A plant cell differs from an animal cell in the absence of
(A) Mitochondria (B) Centrioles (C) Ribosomes (D) Endoplasmic reticulum
46. Cell membrane is
(A) Permeable (B) Selectively permeable (C) Semipermeable (D) Impermeable
47. Cervical vertebrae lie in the
(A) Abdominal region (B) Neck (C) Thorax (D) Sacral region
48. Which of the following vertebrae bears the whole weight of the skull ?
(A) Atlas (B) Axis (C) Cervical (D) Sacral
49. Which one of the following is the smallest gland in the body ?
(A) Adrenal (B) Thyroid (C) Pancreas (D) Pituitary
50. Bacterial action changes dead leaves into
(A) Algae (B) Fungi (C) Humus (D) None of these
51. Which of the following is considered to be the most effective method of returning minerals to the soil ?
(A) Crop rotation (B) Contour ploughing (C) Stripping (D) None of the above
52. Most of the red, blue and purple colours of plants are due to a pigment called
(A) Anthocyanin (B) Carotene (C) Chlorophyll (D) Xanthophyll
53. The germ plasm theory is related to
(A) Mendel (B) Weismann (C) Darwin (D) Lamarck
54. When a cross is made between offspring and its parent, it is known as
(A) Back Cross (B) Test Cross (C) Dihybrid Cross (D) Monohybrid Cross
55. Enzymes are basically
(A) Fats (B) Carbohydrates (C) Proteins (D) Vitamins
56. Which of the following is the principal organ of digestion and absorption of food in our body ?
(A) Large intestine (B) Liver (C) Pancreas (D) Small Intestine
57. Enzyme ptyalin is produced by
(A) Gastric Gland (B) Islets of Langerhans (C) Liver (D) Salivary Glands
58. The number of amino acids known so far, is
(A) 12 (B) 22 (C) 32 (D) 42
59. Starch and Sugar together are named as
(A) Carbohydrates (B) Fats (C) Glucose (D) Proteins
60. The digestion of which of the following results in the formation of amino-acids ?
(A) Carbohydrates (B) Fats (C) Minerals (D) Proteins
61. Antibiotics are drugs used for the cure of
(A) Bacterial diseases (B) Cancer (C) Malaria (D) Nervous disorders
62. Antigens are a
(A) Carbohydrate (B) Fat (C) Hormone (D) Protein
63. Which of the following is not an endocrine gland ?
(A) Adrenal (B) Pancreas (C) Pituitary (D) Thyroid
64. In which of the following human organs does digestion of starch in our diet start ?
(A) Intestine (B) Liver (C) Mouth (D) Stomach
65. Bile secreted by the liver gets stored in the
(A) Gall bladder (B) Duodenum canal (C) Liver itself (D) Spleen
66. If a boy's father has haemophilia and his mother has one gene for it, what is the chance that the boy will inherit the disease
(A) 100% (B) 75% (C) 50% (D) 25%
67. In wrong blood transfusion
(A) RBCs of recipient agglutinase
(B) RBCs of donor agglutinase
(C) WBCs of donor agglutinase
(D) WBCs of recipient agglutinase
68. Genetic mutation occurs in
(A) DNA (B) RNA (C) Chromosomes (D) Ribosomes
69. Which of the following is caused by fermentation, decomposition of organic substances, resulting in simpler compounds ?
(A) Algae (B) Fungi (C) Mcro-organisms (D) None of these
70. Lipase, an enzyme, breaks up
(A) Fats into fatty acids and glycerine
(B) Insulin into fructose
(C) Maltose into glucose
(D) Peptones into amino acids
71. For which of the following is calcium necessary for the proper growth of plants ?
(A) Formation of cell wall
(B) Formation of cell membrane
(C) Formation of chlorophyll
(D) Formation of nucleic acids
72. The first step in photosynthesis is the
(A) Joining of 3-carbon atoms to form glucose
(B) Formation of ATP
(C) Ionisation of water
(D) Excitement of an electron of chlorophyll by a photon of light.
73. The basic building blocks of proteins are
(A) Amino acids (B) DNA (C) Nitrogenous bases (D) RNA
74. Which of the following carry genetic information ?
(A) Carbohydrates (B) Fatty acids (C) Nucleic acids (D) Proteins
75. Usually when tomatoes are plucked they are green. They become red later because the
(A) Chloroplast disappears and new chromoplast arises
(B) Chloroplast gets converted into chromoplast
(C) Chromoplast gets converted into chloroplast
(D) None of the above
76. All of the following are constituents of chlorophyll molecules, except
(A) Calcium (B) Carbon (C) Hydrogen (D) Magnesium
77. One of the following is most suitable for study of mutations :
(A) Haploids (B) Diploids (C) Tetraploids (D) Polyploids
78. Antiserum is a serum containing
(A) Antibodies (B) Antigens (C) Bacteria (D) Leucocytes
79. The process of transference of pollen grains from the anther of a flower to the stigma of another flower is called
(A) Allogamy (B) Autogamy (C) Cleistogamy (D) Homogamy
80. The botanical name of bajra is
(A) Hordeum (B) Oryza (C) Pennisetum (D) Triticum
81. Which of the following is an important organelle for the process of photosynthesis in plants ?
(A) Nucleus (B) Mitochondria (C) Chloroplast (D) Leucoplast
82. In which of the following are cereals mainly rich ?
(A) Glucose (B) Maltose (C) Proteins (D) Starch
83. To which of the following families do all pulses belong ?
(A) Crucifereae (B) Leguminosae (C) Malvaceae (D) Ranuculaceae
84. Which of the following statements is correct ?
(A) Plants carry on photosynthesis all the time
(B) Plants carry on photosynthesis during the night and respiration during the day
(C) Plants carry on photosynthesis during the day and respiration all the time
(D) Plants carry on respiration and photosynthesis alternately all the time
85. The radiant energy absorbed by plants results in
(A) Oxidation of Chlorophyll
(B) Oxidation of CO2
(C) Reduction of Oxygen
(D) Photolysis of water
86. Lethal genes are much less common in haploid organisms than in diploids because
(A) Haploids are usually smaller than the diploids
(B) There are more diploids around us than haploids
(C) In haploids, a gene is expressed even in a single dose
(D) Of the occurrence of irregular meiosis in haploids
87. Which one of the following plant hormones induces flowering in long-day plants ?
(A) Auxin (B) Cytokinin (C) Ethylene (D) Gibberellin
88. Which one of the following pairs is correctly matched ?
(A) Phycocyanin — Far-red light
(B) Phytochrome — Yellow light
(C) Carotene — Blue light
(D) Chlorophyll — Green light
89. Pathway of energy in an ecosystem is
(A) Cyclic (B) Unidirectional (C) Web like (D) Sometimes cyclic and sometimes unidirectional
90. The concentration of which one of the following is the highest in the intra-cellular fluids ?
(A) Iron (B) Sodium (C) Calcium (D) Potassium
91. Which one of these is a secretion from the body of an insect ?
(A) Pearl (B) Coral (C) Lac (D) None of these
92. Which one of the following are colonial in habit ?
(A) Termites (B) Bed bugs (C) Aphids (D) Locusts
93. A plant cell differs from an animal cell in the absence of
(A) Ribosomes (B) Mitochondria (C) Centrioles (D) Endoplasmic reticulum
94. Epiphytes are plants which depend on other plants for
(A) Food (B) Mechanical support (C) Shade (D) Water
95. The endoskeleton of the cell is made up of
(A) Cytoplasm (B) Mitochondria (C) Golgi complex (D) Endoplasmic reticulum
96. All unicellular animals and plants are put under the group :
(A) Protozoa (B) Monera (C) Protista (D) Prokaryota
97. The insect which lays eggs in water is
(A) Sandfly (B) Butterfly (C) Dragonfly (D) Housefly
98. Excretory organs of insects are
(A) Nephridia (B) Malpighian tubules (C) Green glands (D)All of the above
99. If a fresh water amoeba is transferred to sea, its contractive vacuole
(A) Will burst (B) Increases in size (C) Works very rapidly (D) Completely disappears
100. Formation of fruit without fertilisation is known as
(A) Polygamy (B) Polyembryony (C) Parthenocarpy (D) Parthenogenesis
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