Sets
Biology Set 22
30 questions 1. In asexual reproduction, minor variations arise mainly due to:
2. In plants, which gas can be considered a waste product of photosynthesis?
3. Curd turns sour due to the production of:
4. Water covers about ______ of the Earth's surface.
5. The 'food factories' of plants are the:
6. In the human erythrocyte membrane, the approximate percentage of protein is:
7. The central nervous system consists of:
8. The largest isolated single cell is the egg of:
9. If the alveolar surface were spread out, it would cover about:
10. The Agariyas, a tribal community, practise salt farming in the:
11. A blue-black colour on adding diluted iodine solution to a food item indicates the presence of:
12. Beriberi is caused by the deficiency of:
13. The outermost layer of the plant body is formed by:
14. The fungi known as imperfect fungi, because only asexual or vegetative phases were known, belong to:
15. In most mammals, the zygote develops into an embryo:
16. Assertion (A): Without an atmosphere, the Earth would become too cold.
Reason (R): The greenhouse effect traps part of the heat radiated by the Earth.
17. The rings in the throat that ensure the air-passage does not collapse are made of:
18. Consider the following statements:
(I) Plant cells possess cell walls, plastids and a large central vacuole.
(II) Animal cells have centrioles, which are absent in almost all plant cells.
(III) Animal cells possess plastids.
Which of the above is/are correct?
19. Root hairs increase the surface area for:
20. India's Mars Orbiter Mission, Mangalyaan, was launched by ISRO in: