General Science • BiologyHard
Match the plant hormones in List I with their corresponding physiological functions in List II and select the correct matching code: List I (Plant Hormone) 1. Auxin 2. Gibberellin 3. Cytokinin 4. Abscisic Acid List II (Function) 1. Promotes cell elongation and apical dominance 2. Induces stem elongation and seed germination stimulation 3. Stimulates cell division and delays leaf senescence 4. Inhibits growth and promotes stomatal closure during water stress
A. 1-1, 2-2, 3-3, 4-4✓ Correct Answer
B. 1-2, 2-1, 3-4, 4-3
C. 1-3, 2-4, 3-1, 4-2
D. 1-4, 2-3, 3-2, 4-1
💡 Solution & Explanation
Auxins regulate phototropism and apical dominance, while gibberellins promote internodal stem elongation and break seed dormancy. Cytokinins stimulate cytokinesis and prevent premature aging of plant tissues. Abscisic acid acts as a general plant stress hormone that induces dormancy and closes stomata during drought conditions. These phytohormones interact synergistically or antagonistically to coordinate plant growth and development.
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