NEETBotanyPlant - Growth and Development
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Spraying sugarcane crop with gibberellins can increase the yield by as much as 20 tonnes per acre. Reason (R): Gibberellins induce early flowering and seed formation in sugarcane, which leads to massive carbohydrate accumulation in the stems. In the light of the above statements, choose the most ap
Options
- A(A) is correct but (R) is not correct.
- B(A) is not correct but (R) is correct.
- CBoth (A) and (R) are correct and (R) is the correct explanation of (A).
- DBoth (A) and (R) are correct but (R) is not the correct explanation of (A).
Correct answer
A. (A) is correct but (R) is not correct.
Step-by-step solution
Sugarcanes store carbohydrate as sugar in their stems. Spraying sugarcane crop with gibberellins increases the length of the stem, thus increasing the yield by as much as 20 tonnes per acre. Therefore, Assertion (A) is correct. Gibberellins increase the yield by promoting internode elongation, not by inducing flowering. In fact, inducing flowering in sugarcane would consume the stored sugars and reduce the yield. Therefore, Reason (R) is incorrect. Answer: (A) is correct but (R) is not correct.