Question

Which one of the following pairs is not correctly matched?

• A. IAA -Cell wall elongation
• B. Abscisic acid -Stomatal closure
• C. Gibberellic acid -Leaf fall
• D. Cytokinin -Cell division

Answer 1

The correct option is C

Gibberellic acid -Leaf fall

Gibberellic acid is a plant hormone that promotes cell elongation of both leaves and stems in general and internodal length of genetically dwarf plants in particular. It is, in general, a growth promoting hormone and does not inhibit growth. So, leaf abscission is not associated with gibberellic acid but with abscisic acid.