MCQOPTIONS
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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 | |