Multiple choice

The ageing process of plants can be delayed by the application of

  1. gibberellin

  2. auxin

  3. ethylene

  4. cytokinin

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cytokinins are plant hormones that delay senescence (aging) by promoting cell division and preventing protein degradation. They act as anti-aging hormones in plants. Gibberellins promote elongation, auxins regulate growth, and ethylene promotes ripening and senescence.