Question

Which of the following hormones and their respective functions are incorrectly matched?

• A. Auxins --> Helps in growth of root and shoot apex.
• B. Gibberellins --> Helps in improving the shape of fruits
• C. Ethylene --> Promotes rapid internode elongation in deep water rice plants.
• D. Abscisic acid --> delays leaf senescence

Answer 1

The correct option is D Abscisic acid --> delays leaf senescence

Abscisic acid is a plant growth inhibitor that promotes leaf senescence while cytokinin is a plant growth promoter that delays leaf senescence.
Senescence is a process of ageing in plants.
Auxins are plant growth promoters that helps in growth of root and shoot apex.
Gibberellins are plant growth promoters that helps in improving the shape of fruits e.g apple.
Ethylene is a plant growth regulator that promotes rapid internode elongation in deep water rice plants.