Question

Assertion (A) Gibberellin is useful in early seed production in conifers.
Reason (R) Ethephon is responsible for early ripening in tomato and anple.

• A. If both A and R are true and R is the correct explanation of A
• B. If both A and R are true, but R is not the correct explanation of A
• C. If A is true, but R is false
• D. If A is false, but R is true

Answer 1

Answer: (B)

Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Gibberellin is a plant hormone which is useful in early seed production in conifers because gibberellin increases $\alpha$-amylase production in seed which helps in breakdown of seed dormancy and causes seed germination.
Ethephon is commercial name of ethylene hormone which is used to promote early ripening of fruits like tomato and apple.