MIUN Free NEET Quiz Unit 4

1. In C₃ plants the number of carbons in the primary CO₂ acceptor is 5.

2. RuBP catalyses a wasteful oxygenation reaction in C₃ plants: photorespiration.

3. During differentiation, cells undergo structural changes both in their cell walls and protoplasm.

4. By illuminating yellow light on plant, one would expect maximum rate of photosynthesis.

5. 3-phosphoglyceric acid is an organic acid contains 3 carbon.

6. In the carbon fixation cycle, CO is added by the enzyme, RuBisCO, to a 5-carbon compound RuBP that is converted to 2 molecules of 3-carbon PGA.

7. Fats are the favoured substrate for respiration.

8. Tracheary elements are specialized cells found in the xylem tissue of Rhodophyceae.

9. Abscisic acid is an example of intrinsic factor that affects the development of a plant.

10. Respiration refers to the breaking of the C–C bonds of complex compounds through oxidation inside the cells, leading to the release of considerable energy.

11. During photosynthesis CO₂ from the atmosphere is taken in by leaves through stomata and used for making carbohydrates, principally galactose and starch.

12. There is not a complete one-to-one overlap between the absorption spectrum of chlorophyll b and the action spectrum of photosynthesis.

13. Fumarate → malate, does not couple with the GTP production.

14. The primary CO₂ fixation product in C₃ plants is RuBP.

15. Carbohydrates are reduced to release energy.

16. The mitochondria are the site where the breakdown of complex molecules to yield energy occurs.

17. Natural cytokinins can be synthesised in root apices, developing shoot buds, young fruits.

18. Ultimately, not all the food that is respired for life processes comes from photosynthesis.

19. Ethylene is an example of intrinsic factor that affects the development of a plant.

20. In C₃ plants the cell type in which the Calvin cycle takes place is bundle sheath cells.

21. Formation of interfascicular cambium from fully differentiated parenchyma cells is differentiation.

22. Fumarate → malonate, coupled with the NADH production.

23. Dormancy of a plant is influenced by both intrinsic and extrinsic factors.

24. Melvin Calvin contributed to working out the complete light reaction pathway; hence it was called Calvin cycle after him.

25. Lipids are organic biomolecule.

26. Citric acid → isocitric acid, does not couple with the CO₂ release.

27. There are less than 10 gibberellins reported from widely different organisms such as fungi and higher plants.

28. In glycolysis, phosphoenolpyruvate is converted to pyruvic acid which is coupled with NADH utilisation.

29. Along with electrons that come from the acceptor of electrons of PS II, protons are necessary for the reduction of NADP+ to NADPH+ H+.

30. The fate of the pyruvate depends on the availability of oxygen.

31. Engelmann’s first absorption spectrum of photosynthesis resembles the action spectra of chlorophyll a.

32. Differentiation results in development of structures that is commensurate with the function the cells finally has to perform.

33. Cytokinins does not promote nutrient mobilisation which helps in the delay of leaf senescence.

34. The compounds that are oxidised during photosynthesis are known as respiratory substrates.

35. Apical dominance of a plant is influenced by only extrinsic factors.

36. Fumarate → malate, coupled with the GTP production.

37. In the presence of oxygen, C₄ plants show a significant tendency toward photorespiration.

38. T.W Engelmann used anaerobic bacteria in his experiment to describe first action spectrum of photosynthesis.

39. Natural cytokinins are synthesised in regions where rapid cell division occurs.

40. These cytokinins, having specific influence on cytokinesis, were reported as cytokine, a guanine-derived purine, isolated from autoclaved herring-sperm DNA.

41. The use of radioactive 14C by Melvin Calvin in algal photosynthesis studies led to the discovery that the first CO₂ fixation product was a 3-carbon inorganic acid.

42. Gravity is an extrinsic factors that does not control plant growth.

43. Not all the cells in the C₃ plants have Rubisco.

44. Differentiation = growth + development.

45. When 1,3 bisphosphoglyceric acid is converted to 3 phosphoglyceric acid in glycolysis, the step is coupled with ATP utilisation.

46. Malic acid → OAA, does not couple with the NADH production.

47. Only in the mitochondria does the breakdown of complex molecules to yield energy take place.

48. The non-living differentiated plant cells, that by now have lost the capacity to divide can regain the capacity of division under certain conditions.

49. During glycolysis, 2 phosphoglyceric acid is formed from 3 phosphoglyceric acid without any coupling to NADH production.

50. During differentiation, cells undergo few structural changes in their protoplasm alone.