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The Bending of the Stem of a Plant Towards a Source of Light is Caused by the Action of a Phytohormone Known as : (A) Abscisic Acid (B) Auxin (C) Gibberellins (D) Cytokinin - Science

The bending of the stem of a plant towards a source of light is caused by the action of a phytohormone known as :
(a) abscisic acid
(b) auxin
(c) gibberellins
(d) cytokinin

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Solution

(b) auxin

Auxin causes phototropism, i.e., bending of plant stems towards the source of light.

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APPEARS IN

Lakhmir Singh Class 10 Biology (Science)
Chapter 2 Control and Coordination
Q 66 | Page 96
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