When a healthy shoot of a flowering plant is illuminated from one side, auxins, accumulate on the

When a healthy shoot of a flowering plant is illuminated from one side, auxins accumulate on the non-illuminated side of the shoot. Auxin is a plant hormone that controls various aspects of plant growth and development. One of the effects of auxin is to promote cell elongation, which causes the shoot to bend towards the light source. When light shines on one side of the shoot, the auxins on that side are destroyed, and the auxins on the other side accumulate. This creates a concentration gradient of auxin, with higher levels on the non-illuminated side, causing the shoot to bend towards the light source.