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Name various plant hormones. Also give t...

Name various plant hormones. Also give their physiological effects on plant growth and development.

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1. Auxin : responsible for elongation of cells.
2. Gibberellin : responsible for the growth of stem and thereby increases the girth of the stem.
3. Cytokinin promotes cell division in plants .
4. Abscisic acid stops the growth. it makes leaves and fruits fall from the plant.
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