HORTICULTURE

Detailed explanation-1: -Phototropism is one of the many plant tropisms, or movements, which respond to external stimuli. Growth towards a light source is called positive phototropism, while growth away from light is called negative phototropism.

Detailed explanation-2: -Phototropism is the directional growth of an organism in response to light. Growth toward light, or positive tropism is demonstrated in many vascular plant, such as angiosperms, gymnosperms, and ferns.

Detailed explanation-3: -Phototropism Examples Sunflower is a highly phototropic plant. They grow towards the sun and are also seen tracking the movement of the sun throughout the day. That is, the flower keeps changing its direction with the movement of the sun. Sunflower requires more light for its growth and survival.