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Which one among the following hormones stimulates the plant cells to grow in a manner such that the plant appears to be bent towards light ?
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- Cytokinin
- Auxin
- Gibberellin
- Abscisic acid
Correct Option: B
Darwin (1881) found that bending movement of coleoptile of canary grass (Phalaris canariensis) was due to exposure of tip to unilateral light. Boysen-Jensen (1910, 1911) found that the tip produces a chemical which was later named Auxin.
