

MCQOPTIONS
This section includes 76 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
51. |
Prothrombin which helps in clotting of blood is released by |
A. | lymphocytes |
B. | erythrocytes |
C. | monocytes |
D. | blood platelets |
Answer» E. | |
52. |
Other than spreading malaria, anopheles mosquitoes are also vectors of |
A. | dengue fever |
B. | filariasis |
C. | encephalitis |
D. | yellow fever |
Answer» C. encephalitis | |
53. |
Myopia is connected with |
A. | ears |
B. | eyes |
C. | lungs |
D. | None of these |
Answer» C. lungs | |
54. |
Most of the red, blue and purple colours of plants are due to a pigment called |
A. | anthocyanin |
B. | carotene |
C. | chlorophyll |
D. | xanthophylls |
Answer» B. carotene | |
55. |
Phloem is a tissue found in |
A. | reproductive organs of animals |
B. | plants |
C. | insects |
D. | mammals |
Answer» C. insects | |
56. |
Plants that grow in saline water are called |
A. | halophytes |
B. | hydrophytes |
C. | mesophytes |
D. | thallophytes |
Answer» B. hydrophytes | |
57. |
Pyorrhoea is a disease of the |
A. | nose |
B. | gums |
C. | heart |
D. | lungs |
Answer» C. heart | |
58. |
Plant development is influenced by |
A. | quality of light only |
B. | quality and quantity of light |
C. | quality and duration of light |
D. | quality, quantity and duration of light |
Answer» E. | |
59. |
Prokaryotic cells lack |
A. | nucleolus |
B. | nuclear membrane |
C. | membrane bound by organelles |
D. | All of these |
Answer» E. | |
60. |
Process of cell division can take place by |
A. | heterosis |
B. | fusion |
C. | mitosis |
D. | None of these |
Answer» D. None of these | |
61. |
Most highly intelligent mammals are |
A. | whales |
B. | dolphins |
C. | elephants |
D. | kangaroos |
Answer» C. elephants | |
62. |
Photo-oxidation is |
A. | photorespiration |
B. | photolysis |
C. | light and oxygen induced breakdown |
D. | All of the above |
Answer» E. | |
63. |
Plant have ____ while animals lack it. |
A. | starch |
B. | cellulose |
C. | protein |
D. | fat |
Answer» C. protein | |
64. |
Plants developing in dry conditions are |
A. | xerophytes |
B. | mesophytes |
C. | lithophytes |
D. | hydrophytes |
Answer» B. mesophytes | |
65. |
Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false? |
A. | By cyanobacteria |
B. | By electrical discharges in the atmosphere |
C. | By industrially synthesised fertilizer |
D. | By denitrification |
Answer» E. | |
66. |
Plant bends towards the source of light on account of the movement of curvature known as |
A. | geotropism |
B. | thigmotropism |
C. | chemotropism |
D. | phototropism |
Answer» E. | |
67. |
Ptyalin is an enzyme produced in the |
A. | salivary glands |
B. | pituitary glands |
C. | thyroid glands |
D. | pancreas |
Answer» B. pituitary glands | |
68. |
Pollination by wind is called |
A. | anemophily |
B. | hydrophily |
C. | zoophily |
D. | entomophily |
Answer» B. hydrophily | |
69. |
Pollen grains in plants are produced in |
A. | roots |
B. | leaves |
C. | flower |
D. | stem |
Answer» D. stem | |
70. |
Ordinary table salt is sodium chloride. What is baking soda? |
A. | Potassium chloride |
B. | Potassium carbonate |
C. | Potassium hydroxide |
D. | Sodium bicarbonate |
Answer» E. | |
71. |
Ozone hole refers to |
A. | hole in ozone layer |
B. | decrease in the ozone layer in troposphere |
C. | decrease in thickness of ozone layer in stratosphere |
D. | increase in the thickness of ozone layer in troposphere |
Answer» D. increase in the thickness of ozone layer in troposphere | |
72. |
Plants receive their nutrients mainly from |
A. | chlorophyll |
B. | atmosphere |
C. | light |
D. | soil |
Answer» E. | |
73. |
Movement of cell against concentration gradient is called |
A. | osmosis |
B. | active transport |
C. | diffusion |
D. | passive transport |
Answer» C. diffusion | |
74. |
Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to |
A. | angiosperms |
B. | gymnosperms |
C. | monocotyledons |
D. | dicotyledons |
Answer» C. monocotyledons | |
75. |
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 |
Answer» B. germination of pollen grains | |
76. |
Organic Substances which, in very small amounts, control growth and development called |
A. | vitamins |
B. | hormones |
C. | enzymes |
D. | None of the above |
Answer» C. enzymes | |