Which one increases in the absence of light? (a) Uptake of minerals (b) Uptake of water (c) Elongation of internodes (d) Ascent of sap
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The answer is (c) Elongation of internodes.
In the absence of light 'Etiolation' takes place in the stem of plant which is development of 'Etiolin'.
The development of Etiolin results in elongation of the stem of plant.
Thus, in absence of light the Internodes elongate resulting in elongation of stem of plant.
Hope that helps!!
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