MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
One of the following is most suitable for study of mutations? |
| A. | Haploids |
| B. | Diploids |
| C. | Tetraploids |
| D. | Polyploid |
| Answer» B. Diploids | |
| 2. |
Pulses are a good source of ? |
| A. | carbohydrates |
| B. | vitamins |
| C. | proteins |
| D. | fats |
| Answer» D. fats | |
| 3. |
Nymph is the name of young one of____. |
| A. | butterfly |
| B. | beetle |
| C. | housefly |
| D. | cockroach |
| Answer» E. | |
| 4. |
Plants are killed in winter by frost____. |
| A. | because there is no transpiration |
| B. | because no photosynthesis takes place at such low temperature |
| C. | because respiration ceases at such low temperature |
| D. | because of desiccation and mechanical damage to the tissues |
| Answer» E. | |
| 5. |
Number of chromosomes in Down's syndrome is? |
| A. | 47 |
| B. | 46 |
| C. | 48 |
| D. | 49 |
| Answer» B. 46 | |
| 6. |
Mumps is a disease caused by? |
| A. | fungus |
| B. | bacterium |
| C. | virus |
| D. | None of these |
| Answer» D. None of these | |
| 7. |
Radish is a ? |
| A. | bulb |
| B. | conn |
| C. | modified root |
| D. | tuber |
| Answer» D. tuber | |
| 8. |
Most abundant tissues of our body are? |
| A. | muscular |
| B. | connective |
| C. | epithelial |
| D. | nervous |
| Answer» B. connective | |
| 9. |
Movements due to light are shown by? |
| A. | flowering plants |
| B. | lower plants |
| C. | all land plants |
| D. | all the plants |
| Answer» B. lower plants | |
| 10. |
Our major foods, fibres, spices, fruits and beverage crops are? |
| A. | flowering plants |
| B. | gymnosperms plants |
| C. | pteridophytes |
| D. | bryophytes |
| Answer» B. gymnosperms plants | |
| 11. |
Organic Substances which, in very small amounts, control growth and development called? |
| A. | hormones |
| B. | vitamins |
| C. | enzymes |
| D. | None of the above |
| Answer» B. vitamins | |
| 12. |
Radioactivity is a phenomenon of the spontaneous emission of? |
| A. | protons (alpha particles) |
| B. | electrons (beta particles) |
| C. | gamma rays (short wave electromagnetic waves) |
| D. | All of the above |
| Answer» E. | |
| 13. |
Monocot root differs from dicot root in having____-. |
| A. | well developed pith |
| B. | radially arranged vascular bundles |
| C. | scattered vascular bundles |
| D. | open vascular bundles |
| Answer» B. radially arranged vascular bundles | |
| 14. |
Norepinephrine increases _____. |
| A. | respiration |
| B. | urine production |
| C. | saliva production |
| D. | blood pressure |
| Answer» E. | |
| 15. |
Pigmentation of skin is due to ? |
| A. | lymphocytes |
| B. | monocytes |
| C. | leucocytes |
| D. | melanocytes |
| Answer» E. | |
| 16. |
Photosynthesis is a process___--. |
| A. | reductive and exergonic |
| B. | reductive and catabolic |
| C. | reductive, endergonic and catabolic |
| D. | reductive, endergonic and anabolic |
| Answer» E. | |
| 17. |
Plant bends towards the source of light on account of the movement of curvature known as ? |
| A. | Thigmotropism |
| B. | Phototropism |
| C. | Geotropism |
| D. | Chemotropism |
| Answer» C. Geotropism | |
| 18. |
Poison glands of snakes are homologous to? |
| A. | Stings of rays |
| B. | Salivary glands of vertebrates |
| C. | Sebaceous glands of mammals |
| D. | Electric organs of fishes |
| Answer» C. Sebaceous glands of mammals | |
| 19. |
Radical vascular bundles are those in which ______. |
| A. | phloem is surrounded by xylem |
| B. | xylem and phloem occur on the same radius |
| C. | xylem and phloem occur on the different radii |
| D. | xylem is surrounded by phloem |
| Answer» D. xylem is surrounded by phloem | |
| 20. |
Monotremes are unique mammals because they _______. |
| A. | lay eggs |
| B. | posses hair |
| C. | give birth to live young |
| D. | secret milk in a pouch |
| Answer» B. posses hair | |
| 21. |
Plants wilt due to excess of? |
| A. | Transpiration |
| B. | Photosynthesis |
| C. | absorption |
| D. | None of these |
| Answer» B. Photosynthesis | |
| 22. |
Ramapithecus and Cro-Magnon man are considered________. |
| A. | ancestors of modern man |
| B. | ancestors of monkey |
| C. | ancestors of lion |
| D. | None of the above |
| Answer» B. ancestors of monkey | |
| 23. |
Normal adult human male has? |
| A. | 10 gram of haemoglobin/100 gram of blood |
| B. | 14 gram of haemoglobin/100 gram of blood |
| C. | 18 gram of haemoglobin/100 gram of blood |
| D. | 24 gram of haemoglobin/100 gram of blood |
| Answer» C. 18 gram of haemoglobin/100 gram of blood | |
| 24. |
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 | |
| 25. |
Plants growing on sand are called as ? |
| A. | Chasmophytes |
| B. | Oxylophytes |
| C. | Lithophytes |
| D. | Psammophytes |
| Answer» E. | |
| 26. |
Plants developing in dry conditions are? |
| A. | mesophytes |
| B. | lithophytes |
| C. | hydrophytes |
| D. | xerophytes |
| Answer» E. | |
| 27. |
Our skin, when exposed to excess sunlight, becomes dark. This is because our skin pigments called? |
| A. | Flavoxanthin |
| B. | Melanin |
| C. | Carotene |
| D. | Xanthophyll |
| Answer» C. Carotene | |
| 28. |
Prothrombin which helps in clotting of blood is released by ? |
| A. | lymphocytes |
| B. | erythrocytes |
| C. | monocytes |
| D. | blood platelets |
| Answer» E. | |
| 29. |
Myopia is connected with? |
| A. | ears |
| B. | eyes |
| C. | lungs |
| D. | None of these |
| Answer» C. lungs | |
| 30. |
Phloem is a tissue found in ____. |
| A. | reproductive organs of animals |
| B. | plants |
| C. | insects |
| D. | mammals |
| Answer» C. insects | |
| 31. |
N2 content is kept constant in the biosphere due to ? |
| A. | N2 fixation |
| B. | industrial pollution |
| C. | nitrogen cycle |
| D. | absorption of N2 |
| Answer» D. absorption of N2 | |
| 32. |
Potato is a modified form (outgrowth) of ? |
| A. | root |
| B. | stem |
| C. | fruit |
| D. | leaf |
| Answer» C. fruit | |
| 33. |
Placenta is the structure formed________. |
| A. | by the union of foetal and uterine tissue |
| B. | by foetus only |
| C. | by fusion of germ layers |
| D. | None of these |
| Answer» B. by foetus only | |
| 34. |
Neurospora is used as genetic material because _____. |
| A. | it has short life cycle of 10 days |
| B. | the product of single meiosis can be easily analysed |
| C. | meiotic products are linearly arranged in the form of ordered tetrads |
| D. | is a diploid fungus |
| Answer» B. the product of single meiosis can be easily analysed | |
| 35. |
Plants hormone that induces cell division is? |
| A. | auxins |
| B. | gibberellins |
| C. | kinins |
| D. | domins |
| Answer» D. domins | |
| 36. |
Pyorrhoea is a disease of the? |
| A. | nose |
| B. | gums |
| C. | heart |
| D. | lungs |
| Answer» C. heart | |
| 37. |
Plants that grow in saline water are called ? |
| A. | Halophytes |
| B. | hydrophytes |
| C. | mesophytes |
| D. | thallophytes |
| Answer» B. hydrophytes | |
| 38. |
Other than spreading malaria, anopheles mosquitoes are also vectors of _______. |
| A. | filariasis |
| B. | dengue fever |
| C. | encephalitis |
| D. | yellow fever |
| Answer» B. dengue fever | |
| 39. |
O2 released in the process of photosynthesis comes from ? |
| A. | CO2 |
| B. | water |
| C. | sugar |
| D. | pyruvic acid |
| Answer» C. sugar | |
| 40. |
Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by ? |
| A. | Robert Hooke |
| B. | Robert Brown |
| C. | Rudolf Virchow |
| D. | Theodore Schwann |
| Answer» C. Rudolf Virchow | |
| 41. |
Primary phloem develops from ______. |
| A. | provascular tissue |
| B. | lateral meristem |
| C. | protoderm |
| D. | extrastelar cambium |
| Answer» B. lateral meristem | |
| 42. |
Prokaryotic cells lack_____. |
| A. | nucleolus |
| B. | nuclear membrane |
| C. | membrane bound by organelles |
| D. | All of these |
| Answer» E. | |
| 43. |
Photosynthesis takes place faster in ? |
| A. | white light |
| B. | yellow light |
| C. | ed light |
| D. | darkness |
| Answer» B. yellow light | |
| 44. |
Most highly intelligent mammals are ? |
| A. | Whales |
| B. | Dolphins |
| C. | Elephants |
| D. | Kangaroos |
| Answer» C. Elephants | |
| 45. |
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. | |
| 46. |
Process of cell division can take place by ? |
| A. | Heterosis |
| B. | Fusion |
| C. | Mitosis |
| D. | None of these |
| Answer» D. None of these | |
| 47. |
Plants absorb most part of water needed by them through their ? |
| A. | Embryonic zone |
| B. | Growing point |
| C. | Root hairs |
| D. | Zone of elongation |
| Answer» D. Zone of elongation | |
| 48. |
Photo-oxidation is ? |
| A. | photorespiration |
| B. | photolysis |
| C. | light and oxygen induced breakdown |
| D. | All of the above |
| Answer» E. | |
| 49. |
One of the following is not a function of bones? |
| A. | Place for muscle attachment |
| B. | Protection of vital organs |
| C. | Secretion of hormones for calcium regulation in blood and bones |
| D. | Production of blood corpuscles |
| Answer» D. Production of blood corpuscles | |
| 50. |
Out of 900 reported species of living gymnosperms, conifers are represented by about 500 species, About 2,50,000 species of angiosperms (flowering plants) have also been reported in the world. The vast and dominant woodlands in Europe, Asia, North America and mountains such as Himalayas are wooded with_____. |
| A. | all gymnosperms, except conifers |
| B. | only angiosperms |
| C. | only conifers |
| D. | angiosperms and all gymnosperms except conifers |
| Answer» D. angiosperms and all gymnosperms except conifers | |