Question

How does phototropism occurs in plants which among the three figures a,b,c which appears more cacurate?

Answer 1

When the light falls on some part of the shoot, the auxin hormone from there gets deposited to the opposite part which doesn't receive light. And it causes the growth of that part which was in shade resulting in bending of the stem towards the light. This is called as phototropism - movement of plant parts towards light. Please attach the figure here so that I may let you know the correct answer or you can also mark the correct answer regarding my explanation.

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Answer 2

The movement in any part of a plant due to light is called phototropism. The shoot of plant shows positive phototropism and roots show negative phototropism .

Phototropism in plants occurs due to the hormone auxin . When light falls on one side of a plant , the secretion of auxin hormone is more in the part away from the light . Hence , auxin causes growth in length of the cells in shady part . So the plant appears to bend towards light .