Question

Why does the potted plant lean on one side ?

Answer 1

The potted plant lean toward the position of the sun due to phototropic movement it lean on one side.

Answer 2

The potted plant leans on one side due to the auxin hormone in the plant which promotes in growth of the cells. It increases the growth rate on the shaded part of the plant thus making it heavier on one side so it leans towards the sun . This is also known as phototropic movement.