
The plant hormone which is essential for cell division is

Important Questions on Chemical Coordination

Write the names and functions of four plant hormones.



Name four plant hormones.


Which of the following is a plant hormone-




Which of the following plant hormone inhibits plant growth-

Expand the following biological abbreviation:
IAA

A plant hormone which inhibits plant growth is -




The changes that are likely to happen in the plant in the following picture:
(A) A hormone abscisic acid is synthesised at the shoot tip.
(B) When light is coming from one side of the plant, auxin diffuses towards the shady side of the plant.
(C) Abscisic acid helps the cells to grow longer.
(D) Cells grow longer on the side of the shoot which is away from light.
Select the correct option.


Expand the following biological abbreviation:
ABA

State the main functions of the following:
Cytokinins.

