A) Ethylene - Gas hormone
B) Abscisic acid - Flowering hormone
C) Auxin - To grow
D) Gibberellins - Gibbered fujikuroi
Correct Answer: B
Solution :
Abscisic acid is a naturally occurring growth inhibitor. It acts as a stress hormone. It causes abscission of leaves and promotes senescence. It initiates flowering only in certain short day plants.
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