Question

What are plant hormones? Name the plant hormones responsible for the following:
(i) Growth of stem (ii) Promotion of cell division
(iii) Inhibition of growth (iv) Elongation of cells

Answer 1

Answer:

1. Gibberellins

2. Cytokinin

3.Abscisic Acid

4.Auxin.

Answer 2

Growth of stem - Gibberellins  

Promotion of cell division - Cytokinin

Inhibition of growth - Abscisic acid

Elongation of cells - Auxin

Explanation:

Gibberellins are plant hormones that regulate various developmental processes, including stem elongation, germination, dormancy, flowering, flower development, etc.

Cytokinins promote cell division in plant roots and shoots.

Abscisic acid is a plant hormone that controls many developmental processes in plants, including seed and bud dormancy, the control of organ size and stomatal closure.

Auxin is a plant hormone produced in the stem tip that promotes cell elongation.