Question

Write the name of a hormone that plays a major role in (i) falling of leaves (ii) rapid cell division. 

Hint:

Abscisic acid helps in maintaining plant water balance, while cytokinins are key regulators in stimulating plant cell division.

Answer 1

- (i) The hormone primarily responsible for F₂leaf fallF₂ is F₂Abscisic acid (ABA)F₂. ABA facilitates leaf detachment, especially during environmental stress like drought.
- (ii) The hormone primarily responsible for F₂accelerated cell divisionF₂ is F₂CytokininsF₂. Cytokinins stimulate cell division and are commonly present in regions of active growth.