Plant Physiology

Welcome to your Plant Physiology

1. Ethylene is used for
2. Which of the following is not an effect of ethylene?
3. In the mechanism of opening and closing of stomata, the important factor is
4. Compensation point means the condition
5. Positive geotropism is exhibited by
6. NADP is expanded as
7. Which one of the following pairs is not correctly matched?
8. When a plant wilts, the sequence of events is as follows:
9. Osmosis involves
10. Plasma membrane controls
11. A plant hormone for inducing Morphogenesis in plant tissue culture is
12. One of the synthetic auxin is
13. In hot summer days, plant cooling is due to
14. Marine fish when thrown under tap water bursts because of
15. A cell that lacks chloroplast does not
16. Stomata open during the day and close at night because
17. The hormone responsible for phototropism and geotropism is
18. Which one of the following would not be a limiting factor for photosynthesis?
19. Guttation is the elimination of excess of water from plants through
20. The rate of photosynthesis is not affected by
21. Seeds when soaked in water imbibe in it because
22. Which one of these reaction occurs during photosynthesis?
23. If the rate of transpiration becomes more than the rate of photosynthesis, plants will
24. A phytohormone existing in gaseous state is
25. Chlorophyll is present
26. The phytohormone that helps in the germination of seeds is
27. Transpiration pull will be maximum under which of the following conditions?
28. The specific function of light energy in the process of photosynthesis is to
29. The space between the cell wall and plasma membrane in a plasmolysed cell is filled with
30. Plants lose water by guttation when
31. A plant hormone related with inhibition of senescence is
32. The production of starch and not glucose is often used as a measure of photosynthesis in leaves because
33. In the process of Osmosis in a cell:
34. Process of endosmosis stops
35. Which of the following regulate closure of stomata?
36. Cell division in plants is promoted by
37. Osmosis involves diffusion of
38. A plant is kept in a dark cupbord for about 48 hours before conducting any experiment on photosynthesis to
39. When cell is fully turgid, which of the following will be zero?
40. Transpiration is very low during the storms due to
41. Which would do maximum harm to a tree?
42. Internodal elongation is associated with
43. Water will be absorbed by the root hairs when:
44. The phytohormone that prevents the germination of seeds is
45. To increase sugar production in sugarcanes, they are sprayed with


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