During seed germination, its stored food is mobilized by:

Ethylene

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Cytokinin

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ABA

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Gibberellin

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Solution

The correct option is D
Gibberellin

Gibberellins stimulate the synthesis of $α$ -amylase and protease enzymes in germinating grains of cereals. They are involved in the conversion of starch into sugar. The proteases convert an inactive $β$ -amylase and $α$ -amylase to digest starch to glucose which is mobilized to meet the metabolic demands of the embryo.

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Mobilization of food stored in germinating seeds is triggered by:

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