Plant physiology one liner and answer key
Plant physiology answer key
| 1. | b | 6. | a |
| 2. | a | 7. | b |
| 3. | a | 8. | c |
| 4. | a | 9. | a |
| 5. | c | 10. | d |
| 11. | c | 16. | a |
| 12. | c | 17. | c |
| 13. | a | 18. | b |
| 14. | d | 19. | a |
| 15. | c | 20. | a |
| 21. | b | 26. | b |
| 22. | c | 27. | a |
| 23. | d | 28. | a |
| 24. | a | 29. | d |
| 25. | d | 30. | c |
| 31. | c | 36. | a |
| 32. | a | 37. | c |
| 33. | c | 38. | c |
| 34. | c | 39. | d |
| 35. | b | 40. | b |
| 41. | c | 46. | c |
| 42. | d | 47. | d |
| 43. | a | 48. | c |
| 44. | d | 49. | b |
| 45. | a | 50. | c |
Explanations
Answer Key 01-10
01: Stephen Hales is known as father of Plant Physiology.
02: Plasma membrane is a semi permeable membrane.
03: Root hairs are responsible for most of the water absorption.
04: Xylem is responsible for the upward movement of soil nutrients in plants.
05: Pulsation theory was given by J.C. Bose in 1923.
06: Manometer is an instrument for measuring root pressure.
07: Plant cell wall is impermeable in nature.
08: Minerals are translocated in plant as both organic and inorganic compounds.
09: The full form of PAR is Photosynthesis Active Radiation.
10: PAR occurs at 400-700 nm.
Answer Key 11-20
11: Mg or magnesium is the element of chlorophyll.
12: Chlorophyll a and b responsible for photosynthesis in higher plants.
13: The colour of chlorophyll a is blue green.
14: The colour of chlorophyll b is yellow green.
15: Light reaction is also known as C4 or Hill reaction.
16: The Hill reaction takes place in grana of chlorophyll.
17: C3 cycle is also known as dark reaction or Calvin cycle.
18: The dark reaction take place in stroma of chlorophyll.
19: Grana and stroma are present in chloroplast.
20: C3 cycle is also known as Blackman reaction.
Answer Key 21-30
21: 3 PGA is the final product of C3 pathway.
22: The another name of Hatch and slack pathway is C4 cycle.
23: Examples of C3 plants are as follows:
- Rice.
- Wheat.
- Pea.
- Soybean.
24: Oxalo acetic acid is the first product of C4 pathway.
25: Example of C4 plants are as follows:
- Maize.
- Sorghum.
- Sugarcane.
- Millets.
26: PEP carboxylase is the most important enzyme involved in photosynthetic CO2 fixation in C4 plants.
27: Rubisco is the most important enzyme involved in photosynthetic CO2 fixation in C4 plants.
28: C4 plants have Kranz type leaves.
29: Full form of CAM is Crassulacean Acid Metabolism.
30: Examples of CAM plants are as follows:
- Pineapple.
- Opuntia.
- Cacti.
Answer Key 31-40
31: The water use efficiency of CAM plants is higher than C3 plants.
32: The net gain ATP during glycolysis is 2.
33: The net gain ATP synthesis from one molecule of glucose in respiration is 36.
34: Photorespiration occurs during night.
35: Leaf is the principle organ of transpiration which is 90%.
36: The most of stomata mostly present on lower surface of leaves is potato type.
37: The growth rate of plant is measured by auxanometer and crescograph.
38: Auxin is known for apical dominance.
39: Molybdenum is a micronutrient.
40: Full form of PGR is Plant Growth Regulators.
Answer Key 41-50
41: ABA is an example of plant growth inhibitor.
42: Cytokinin is the cause of delayed senescence.
43: GA3 is used to break the dormancy of seeds.
44: Ethylene is fruit ripening hormone.
45: Cytokinin is responsible for cell division.
46: Khaira disease is a physiological disorder of paddy.
47: Spongy tissue is a physiological disorder of mango.
48: Calcium deficiency is the cause of Cat face of tomato.
49: Whiptail belongs to cauliflower (cole crops).
50: Long day plants require 14 hours of day length.