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If light falls on a plant stem from one side only then towards which side will the stem bend?

Answer and explanation

Correct answer: Towards light

A shoot normally shows positive phototropism, meaning it grows towards a directional light stimulus. Auxin becomes distributed more on the shaded side of the stem, where it promotes greater cell elongation. Because the shaded side grows faster, the stem curves towards the illuminated side. It does not bend downward, move away from light, or remain straight when the light is one-sided.

Related tags

PhototropismAuxinPlant HormonesControl And CoordinationScienceClass 10 Mcq

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