Question

how does phototropism occur in plant

Answer 1

$\textbf{Phototropism}$

The term is related with tropic movement in order with the stimulus generated beacuse of light.

So, you can say Phototropism as a tropic movement in order to the light.

This follows as, the binding of the stem of plant, in the direction of the source of light.

Answer 2

Answer:

Directional movement and growth of plant in response to light is called as phototropism. Phototropism occurs due to increased auxin on the dark side and decreased auxin on the illuminated side. Because of presence of more auxin, leaf in the darker side grows faster causing it to bend towards the source of light.