Question

Abscission plays an important role in

• A. Senescence
• B. Vegetative propagation
• C. Sexual reproduction
• D. All of the above

Answer 1

Answer: (A)

Senescence

Abscission is the stage when there is falling off the parts of the plants due to ageing. The parts of the plants turn yellow and then there is the breaking of the tissue or organ from the plant part. The abscission occurs in anatomically distinct parts of the plants like the petiole or the peduncle. Ethylene causes the abscission of the old leaves and the ripe fruits. Ageing and abscission results in senescence which causes the death of the plant.

Thus, the correct answer is option A.