A) It likes the sun
B) It is heavy
C) It needs darkness
D) Due to some secretion from tip
Correct Answer: D
Solution :
Darwin and his son found that bending movement of coleoptile of Canary grass was due to exposure of tip of unilateral light. Boysen-Jensen found that the tip produces a chemical which was later named auxin.You need to login to perform this action.
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