Question

Which among the following hormone is associated with wilting of leaves?

• A. Auxin
• B. Cytokinin
• C. ABA
• D. Ethylene

Answer 1

The correct option is C ABA

A. Auxin is a growth promoting hormone. It allows cell differentiation and also mediates the tropic movements in plants.

B. Cytokinin promotes growth by activating the cell division. It also breaks the seed dormancy, delay leaf senescence and promotes the opening of stomata.

C. ABA is the stress hormone that inhibits growth under stressed conditions. It promotes the closing of stomata, thereby preventing loss of water and wilting of leaves.

D. Ethylene is a gaseous hormone that promotes senescence and abscission of leaves and flowers and ripening of fruits.

So, the correct answer is 'ABA'.