Explain the cause of shoots of the plant bending towards light?
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because they have some specific cell which move to shady part of plant n go on duplicating ..
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The plant growth hormone that is synthesized is the shoot tip is Auxin.
The growth of a plant towards the light source is known as phototropism. It occurs in plants due to the hormone auxin which is highly light sensitive. As sunlight falls on one side of the shoot, auxin gets stimulated and generally it diffuses to the shaded portion of the plant. It starts elongating the cells of the shaded portion. Thus the shaded portion grows and elongates more than the illuminated part. As a result the curvature of the plant stem tip bends towards the light.
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