Plant Growth and Development Question 30

30. Which one of the following pairs, is not correctly matched?

[2007]

(a) Gibberellic acid - Leaf fall

(b) Cytokinin - Cell wall elongation

(c) IAA - Cell wall elongation

(d) Abscissic acid - Stomatal closure.

Show Answer

Answer : a

Hints & Solutions

(a) Gibberllic acid stimulates cell growth of leaves and stem causing their expansion, elongation respectively and leaf fall is controlled by ABA.