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The activity of alpha-amylase in the end...

The activity of `alpha`-amylase in the endosperm of a germinating seed of barley is induced by

A

ethylene

B

cytokinin

C

IA A

D

gibberellin

Text Solution

Verified by Experts

The correct Answer is:
D
Gibberellic acid induces de novo (a new) synthesis of various hydrolytic enzymes, such as, `alpha`-amylase, ribonuclease, `alpha`-1,3-glucanase and protease in aleurone cells of barley grains. This has been experimentally shown by isolating the aleurone layer and treating it with gibberellin solution. These enzymes are mobilised to endosperm during germination and hydrolyse the storage reserve.
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