Question

How does phototropism occur in plants??

Answer 1

Plants need sunlight, so the stem respond to sun light by growing towards it. This is known as phototropism

Answer 2

Hope this may be helpful to you,

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Auxins are responsible for phototropism in plants.when auxins are exposed to sunlight they get destroyed.hence they move towards shaded region which causes the plant to bend towards sunlight.this results in phototropism in plants.