Question

Assertion : Ethylene cause climacteric ripening of fruits
Reason : Climacteric fruits show a rise in respiration at the time of ripening.

• A. If both the assertion and reason are true and the reason is a correct explanation of the assertion
• B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
• C. If the assertion is true but the reason is false
• D. If both the assertion and reason are false
• E. If the assertion is false but reason is true

Answer 1

The correct option is B If both the assertion and reason are true but the reason is not a correct explanation of the assertion

In most fruits, the rate of respiration will undergo a sharp rise and then fall near the end of ripening. Kidd and West termed this phenomenon climacteric. The climacteric acts as a trigger that sets in progress those changes that rapidly transform the fruit from an unripe to a ripe condition. Finally, application of ethylene to unripe fruit will bring on a premature climacteric and accelerate ripening.

So, the correct answer is B 'If both the assertion and reason are true but the reason is not a correct explanation of the assertion'