A natural auxin found in plants.

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Solution

Natural Auxin:
IAAà indole -3 Acetic acid
IBA à indole butyric acid
Characteristics of Auxin:
Are synthesized naturally in plants.
Promote the growth of root and stem as they migrate to the region of action.
Responsible for apical dominance in plants.
In Legumes IAA- stimulate nodule formation.

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(a) Hormone that stimulates growth by cell-division.

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