In coleoptile tissue,auxin is

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(D) Auxin is synthesized primarily in the growing apical regions of the plant,such as the shoot and root apices. From these sites of production,it is

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Produced by growing apices of stem,which migrate to the region of its action

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(D) Auxin is synthesized primarily in the growing apical regions of the plant,such as the shoot and root apices. From these sites of production,it is transported to the regions where it exerts its physiological effects,such as promoting cell elongation. This transport is typically polar (often basipetal) and is an active process,not simple diffusion or osmosis.

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