NEET Botany Growth Regulators MCQ Question
Which of the following statements about plant growth regulators is/are correct?
Plant growth regulators are small, simple molecules that can be classified into distinct chemical groups.
Gibberellic acid is primarily responsible for promoting apical dominance in plants.
Auxins and cytokinins are the only two classes of plant growth regulators.
Plant growth regulators play a role in both growth and differentiation of plant tissues.
Correct Answer
Detailed Explanation
Statement A is correct as it reflects the diverse chemical composition of PGRs. Statement D is also correct since PGRs influence both growth and differentiation in plants. However, statements B and C are incorrect, as gibberellic acid does not primarily promote apical dominance and there are more than two classes of PGRs.
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