Question

Match the following:

Column I	Column II
A. 2, 4-D	i. Promoting bolting in biennials
B. GA3	ii. Promotes female flower in cucumbers
C. Cytokinins	iii. Induce dormancy in seeds
D. Ethephon	iv. Herbecide to kill dicotyledonous weed
E. ABA	v. Delay leaf senescence

• A. A- ii, B-iv, C-i, D-iii, E-v
• B. A- iv, B-i, C-v, D-ii, E-iii
• C. A- i, B-v, C-ii, D-iii, E-iv
• D. A- iii, B-ii, C-iv, D-v, E-i

Answer 1

The correct option is B A- iv, B-i, C-v, D-ii, E-iii

• 2, 4-D (2, 4- Dichloro diethyl acetic acid) is a synthetic auxin which is used as a herbicide to kill dicotyledonous weeds in farmlands.
• GA3 (Gibberellic acid) promotes internodal elongation causing the biennials like beet, cabbages to undergo bolting prior to flowering.
• Cytokinins have the ability to mobilise nutrients which can result in the delay of leaf senescence.
• Ethephon is the most widely used form of ethylene, the ripening hormone. It promotes the number of female flowers in cucumbers resulting in high yield.
• ABA (abscisic acid) can induce dormancy in seeds, which help the seeds to overcome any unfavorable conditions.