MIUN Free NEET Quiz Unit 4

1. Cytokinins helps in the delay of leaf senescence.

2. Photosynthesis takes place only in the green parts of the plants, mainly the leaves.

3. Vernalisation of a plant is influenced by only extrinsic factors.

4. The electrons, as they move through the system, release enough energy that are trapped to synthesize GTP.

5. Tracheary elements are specialized cells found in the xylem tissue of bryophytes.

6. The NADP oxidase enzyme is located on the stroma side of the membrane.

7. Fats can be used as respiratory substances.

8. Carotenoids are the major pigment responsible for trapping light.

9. Redifferentiation refers to the process by which specialized cells revert to a less specialized or even a stem cell-like state.

10. Splitting of the water molecule takes place on the beneath the chloroplast outer membrane.

11. Since the discovery of zeatin, several naturally occurring cytokinins, and some synthetic compounds with cell division promoting activity, have been identified.

12. Dihydroxy acetone phosphate – 6C compound.

13. In glycolysis, Fructose 1, 6 bisphosphate is converted to glyceraldehyde-3-phosphate and Dihydroxy acetone phosphate which is do not coupled with ATP production.

14. In C₃ plants the number of carbons in the primary CO₂ acceptor is 3.

15. Not all GAs are acidic.

16. Within the chloroplasts, the membranes are sites for the light reaction, while the chemosynthetic pathway occurs in the stroma.

17. Synthesis of GTP in citric acid cycle is an example of oxidative phosphorylation.

18. Intercellular factors is an example of extrinsic factor that affects the development of a plant.

19. In the carbon fixation cycle, CO₂ is added by the enzyme, RuBisCO, to a 5-carbon compound RuBP that is converted to 2 molecules of 3-carbon PGA.

20. GA3 is used to speed up the malting process in brewing industry.

21. Plant growth regulators is an example of intrinsic factor that affects the growth and differentiation of a plant.

22. Fumarate → malonate, coupled with the FADH₂ production.

23. In glycolysis, phosphoenolpyruvate is converted to pyruvic acid which is coupled with NADH production.

24. Fats and proteins can also be broken down to yield energy.

25. The chemiosmotic hypothesis has been put forward to explain the mechanism of ATP is synthesised in the mitochondria.

26. Sugarcane stores carbohydrate as sugar in their roots.

27. The primary accepter of electron which is located towards the outer side of the membrane transfers its electron not to an electron carrier but to an H carrier.

28. Succinyl-CoA → succinate, coupled with the FADH₂ production.

29. The breaking of the C-C bonds of simple compounds through oxidation within the cells, leading to release of considerable amount of energy is called photosynthesis.

30. Chlorophyll a is the major pigment responsible for trapping light.

31. Scientists also tried to know whether all plants have PGA as the first product of CO₂ fixation, or whether any other product was formed in other plants.

32. Fats are reduced to release energy.

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

34. Plant growth and development is also affected by light, temperature, nutrition, oxygen status, gravity, and such external factors.

35. The first stable product identified during fixation in plants was PGA.

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

37. Splitting of water molecules is associated with PS II resulting in the release of CO₂, protons, and transfer of electrons to PS II.

38. The breaking of the C–C bonds of simple compounds within the cells, by oxidation, and the release of considerable energy, is called respiration.

39. Intercellular intrinsic factors are the chemical substances, called plant growth regulators (PGR).

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

41. Temperature is an example of extrinsic factor that affects the development of a plant.

42. Fats and proteins cannot be broken down to yield energy.

43. During differentiation, to form a tracheary element, the cells would lose their cell wall.

44. Using a prism, Joseph Priestley split light into its spectral components and then illuminated a green alga, Cladophora, placed in a suspension of aerobic bacteria.

45. OAA + acetyl CoA → citric acid, does not couple with the GTP production.

46. Cytokinins have non-specific effects on cytokinesis and were discovered as kinetin (a modified form of guanine, a purine) from the fresh herring sperm DNA.

47. Succinate → Fumarate, coupled with the NADH production.

48. Under intense illumination, C₃ plants exhibit a low CO₂ fixation rate.

49. Glyceraldehyde-3-phosphate and Dihydroxy acetone phosphate are triose phosphates.

50. Using a prism, Julius von Sachs split light into its spectral components and then illuminated a green alga, Cladophora, placed in a suspension of aerobic bacteria.