Gibberellins, ethylene and abscissic acid — task. Science CBSE, Class 10.

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(Note: In some of the questions more than one answer in correct).

1. Which of these did Kurosawa observe in 1926.

Bolting
Foolish seedling disease in rice crops
Bakane disease in rice crops
Stimulation of tremendous elongation by gibberellins

2. Identify the incorrect statements about ABA.

It is a hormone that promotes abscission
It is a hormone that inhibits abscission
It promotes senescence in leaves by causing the loss of chlorophyll
It initiates the closure of stomata during water stress

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