Plant Growth and Development Question 27
27. Phototropic curvature is the result of uneven distribution of:
[2010]
(a) gibberellin
(b) phytochrome
(c) cytokinins
(d) auxin
Show Answer
Answer : d
Hints & Solutions
(d) Phototrophic curvature is the result of uneven distribution of auxin. The experiments conducted by Charles Darwin concluded that the tip of coleoptile of canary grass contain auxin that causes the bending of the entire coleoptile towards the light source.
