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MHT CET Medical202623 April 2026Morning ShiftBiologyPlant - Growth and DevelopmentActual

Identify the INCORRECT statement about gibberellins.

Options

  1. AIt promotes bolting in beet and cabbage.
  2. BIt causes epinasty of leaves and flowers.
  3. CIt promotes seed germination in cereals.
  4. DIt breaks dormancy of seed and hastens germination.

Correct answer

B. It causes epinasty of leaves and flowers.

Step-by-step solution

Gibberellins are plant growth regulators that promote stem elongation, bolting in rosette plants like beet and cabbage, and seed germination by breaking dormancy and stimulating the synthesis of hydrolytic enzymes in cereals. Epinasty, which is the downward bending of leaves and flowers due to greater growth on the upper side, is primarily caused by ethylene, not gibberellins. Therefore, the statement that gibberellins cause epinasty of leaves and flowers is incorrect. Answer: It causes epinasty of leaves and flowe

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