DENDROLOGY

Detailed explanation-1: -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-2: -Phototropism is the phenomenon by which the plant bends in the direction of light. Light is required by the plants to stimulate energy production by the process of photosynthesis.

Detailed explanation-3: -Growth towards a light source is called positive phototropism, while growth away from light is called negative phototropism, which is also known as ‘skototropism’.

Detailed explanation-4: -Abstract. Plants have evolved a wide variety of responses that allow them to adapt to the variable environmental conditions in which they find themselves growing. One such response is the phototropic response-the bending of a plant organ toward (stems and leaves) or away from (roots) a directional blue light source.