THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Phototropism: The bending of growing plants towards the light is called phototropism. By orienting their leaves and stems towards light plants receive the maximum energy for photosynthesis. This process is mediated by a plant hormone called Auxin.

Detailed explanation-2: -In phototropism a plant bends or grows directionally in response to light. Shoots usually move towards the light; roots usually move away from it.

Detailed explanation-3: -"Even mature plants bend toward the strongest light. They do this by elongating the cells of the stem on the side that is farthest from the light. This type of light-oriented growth is called phototropism, ‘’ explains Prof.

Detailed explanation-4: -Auxin is the hormone that causes bending of the plant towards light. Auxin synthesized by the cells present in area receiving light moves towards the shady side of the stem and causes elongation of that part. Thus the shoot appears bent towards light.