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Name and state briefly one function each...

Name and state briefly one function each of any three phyto - hormones.

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Three gwoth hormones in plants are ---
(i) Auxin : It is synthesised in the young tip of roots and shoots. It promotes elongation and division of cell and root fromation.
(ii) Gibberellins : They help in the growth of the stem.
(iii) Cytokinins : They promote cell division and delay leaf ageing.
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