Gibberellins, ethylene and abscissic acid — task. Science State Board, 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.

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

2. Which of these is a right statement regarding ethylene?

Ethylene acts as a growth promoter
Ethylene is a liquid plant hormone
Ethylene is a gaseous plant hormone
Ethylene is synthesized during the development of fruits such as apples

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