A) triple response growth
B) bolting
C) scarification
D) night break effect
Correct Answer: B
Solution :
Rapid and dramatic increase in shoot length is called bolting. Gibberellins induce stem elongation in rosette plants, eg, cabbage, henbane etc such plants show retarded intemodal growth and profuse leaf development. In these plants, just prior to the reproductive phase, the internodes elongate enormously causing a marked increase in stem height, ie, bolting.
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