A) auxin
B) cytokinin
C) gibberellin
D) none of these
Correct Answer: C
Solution :
Germination of seeds especially in cereals is triggered by soaking the seed in water. After imbibition of water the embryo secretes gibberellin which diffuses to aleurone layer and stimulates synthesis of amylase, protease, and lipase enzyme. The enzymes solubilise the reserve food of the seed. Auxin promotes root initiation, apical dominance, parthenocarpy and cell enlargement. Cytokinin play important role in cell division, morphogenesis, flowering etc.
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