Question

how does phototropism occur in plant​

Answer 1

♤ The directional or the tropic movement of plants towards the light or away from the light is called photoprism.

♤ The shoots respond by bending towards light , while roots respond by bending away from the light.

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 .