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(All India - 2019)

Answer 1

Answer:

the hormones which are secreated by plants to control and coordinate the plants are known as plant hormones

Explanation:

1.. auxin

2.. cytokinin

3.. abscissic acid

4.. gibberillins

Answer 2

Explanation:

Plant hormones are signal molecules, produced within plants, that occur in extremely low concentrations. Plant hormones control all aspects of plant growth and development, from embryogenesis, the regulation of organ size, pathogen defense, stress tolerance and through to reproductive development.

 1.Growth of the stem - Gibberillins

2.Promotion of cell division- cytokinins

3.Inhibition of growth - Abscissic acid in seed, Auxins in lateral buds

4. Elongation of cells - Auxins

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