question_answer

Deep-water rice is an important crop in South East Asia where water levels during the rainy season may rise by several metres within a short time. Deep-water rice has the ability to adapt to the rising water by growing quickly, thus keeping its "head" (flower stalk and upper leaves) above water. Examine the four graphs and identify the hormone that regulates this rapid growth.

A)  Ethylene          

B)  Cytokinin

C)  Gibberellin       

D)  None of these