Category: CSIR NET Life Science Previous Year Questions and Solution Plant Physiology

42. Which hormone play important role in water stress in plants? (1) Abscisic acid                (2) Ethylene (3) Gibberellic acid            (4) Auxin Correct answer: (1) Abscisic acid Explanation: Abscisic […]

41. Hormone responsible for maturation of Embryo is- (1) Abscisic acid           (2) Gibberellic acid (3) Ethylene                 (4) Auxin Correct answer: (1) Abscisic acid Explanation: Abscisic acid (ABA) is […]

Which of the following is the plant hormone involved in seed and bud dormancy and in response of plants to stress? (1) Abscisic acid              (2) Cytokinin (3) Auxins                      […]

Plants make several hormones that are important for growth and development. Some statements on plant hormones are given below: A. Auxin is produced primarily in the root apices B.Cytokinins are […]

S-adenosyl methionine is a precursor of which plant hormone? (1) Absiccic acid                (2) Auxin (3) Ethylene                     (4) Cytokinin Correct answer: (3) Ethylene Explanation: S-adenosyl methionine (SAM) is a […]

Aspirin delays senescence in cut parts of plant and keeps flower fresh for longer time The effect of aspirin (1) by decreasing the synthesis of ethylene. (2) by increasing the […]

36. For which one of the plant hormone biosynthetic pathways, 1-aminocyclo- propane- 1 -carboxylic acid is an intermediate? (1) Abscisic acid            (2) Brassinosteroid (3) Ethylene                    (4) Gibberellic acid […]

35. The hormone responsible for leaf epinasty(curvature) in flooding-sensitive plants such as tomato is (1) abscisic acid                                 (2) auxin (3) ethylene                                  (4) gibbrellic acid Correct answer: (3) Ethylene […]

34. Plant hormone responsible fruit ripening is (1) Auxin                                   (2) Gibberellic acid (3) Abscisic acid                         (4) Ethylene Correct answer: (4) Ethylene Explanation: Ethylene is the primary plant hormone […]

33. Following statements were made regarding gibberellins (GA) biosynthesis in plants and fungi. (A) Two separate enzymes are involved in synthesis of ent-kaurene from GGDP in plants (B) Only a […]