Plant Growth and Development · NEET Preparation Botany
Which of the following pairs of plant growth regulators (PGRs) is antagonistic in function with respect to seed dormancy and apical dominance respect…
Practice question from Plant Growth and Development (NEET Preparation Botany), with the correct answer and a step-by-step solution.
medium · MCQ · Q-C16A09
Which of the following pairs of plant growth regulators (PGRs) is antagonistic in function with respect to seed dormancy and apical dominance respectively?
- A.ABA and Auxin; Gibberellin and Cytokinin
- B.Gibberellin and ABA; Auxin and CytokininCorrect answer
- C.Ethylene and Auxin; ABA and Gibberellin
- D.Cytokinin and ABA; Gibberellin and Auxin
Solution
Gibberellins break seed dormancy (antagonistic to ABA which induces it), while Auxins maintain apical dominance and Cytokinins promote lateral bud growth (antagonistic to each other regarding apical dominance).
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