Auxins are abundantly produced in

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(D) Auxins are plant growth regulators that are primarily synthesized in the growing apices of stems and roots. However,they are produced in the highe

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Meristematic region of the shoot

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(D) Auxins are plant growth regulators that are primarily synthesized in the growing apices of stems and roots. However,they are produced in the highest concentrations in the apical meristems of the shoot,which are responsible for primary growth and apical dominance. Therefore,the meristematic region of the shoot is the primary site of abundant auxin production.

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