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NEET BIOLOGYEasy

Match the following concerning the activity/function and the phytohormone involved:

Column-I (Activity/Function) Column-II (Phytohormone) (a) Fruit ripening (i) Abscisic acid (b) Herbicide (ii) Ethylene (c) Bolting (iii) Auxin (d) Stress hormone (iv) Gibberellic acid

A

(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

B

(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)

C

(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

D

(a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)

Step-by-Step Solution

:

  • Ethylene is a gaseous hormone mainly involved in fruit ripening .
  • Auxins like 2,4-D are widely used as herbicides to kill dicotyledonous weeds .
  • Gibberellins cause bolting (internode elongation just prior to flowering) in beet, cabbages, and many plants with rosette habit .
  • Abscisic acid (ABA) stimulates the closure of stomata and increases tolerance to various stresses, hence it is called the stress hormone .
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