A) ethylene
B) abscissic acid
C) zeatin
D) indole-3-acetic acid
Correct Answer: D
Solution :
Tea plants are grown by stem cuttings. If-we dip the lower cut end of a cutting in dilute solution of auxins (IAA, IBA, etc), very soon large number of roots are developed on the cut ends, due to which these cutting develop into successful plants.
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