AIIMS2019BotanyPlant - Growth and Development
Assertion : Gibberellic acid increases length of grape stalks. Reason : Ethophon hastens fruit ripening in tomato and apple.
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion.
- BIf both assertion and reason are true but reason is not the correct explanation of assertion.
- CIf assertion is true but reason is false.
- DIf both assertion and reason are false.
Correct answer
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
Step-by-step solution
Gibberellin increases the number and size of several fruits, e.g., grape, tomato. The hormone creates more room by increasing the size of stalks so that the fruit can grow in size. Ethophon is 2-chloroethyl phosphonic acid. In aqueous solution, ethophon slowly releases ethylene and is transported to various parts. It aids in fruit ripening in some fleshy fruits like banana, tomato, apple, mango, etc.