Botany-Growth Regulators
NEET Botany Growth Regulators Assertion Reason Question
Type: Assertion Reason-assertion-Medium-Class 11
Assertion (A): Gibberellic acid promotes stem elongation in plants.
Reason (R): Gibberellic acid was identified as the active substance in the 'bakanae' disease of rice seedlings.
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
Correct Answer
Option A
Detailed Explanation
The NCERT context explains that gibberellic acid was identified as the active substance in the 'bakanae' disease, which causes elongation in rice seedlings, supporting the assertion.
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