Plants require light to stimulate the process of photosynthesis, which produces energy.
It occurs when a plant bends towards the direction of light.
The hormone auxins, which is found in the cells, reacts to photosynthesis by producing more protein and generating energy for the plant.
Phototropism allows plants to maximize their photosynthetic capability.
It is necessary for survival and growth.
Positive phototropism causes the stem and shoots to turn towards the sunshine whereas negative phototropism causes the root turn away from the light source.