HORTICULTURE

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. In photoperiodism flowering and other developmental processes are regulated in response to the photoperiod, or day length.

Detailed explanation-2: -An example of a plant that is highly phototrophic is the sunflower (Helianthus annus). Not only do sunflowers grow toward the sun, they can be visibly seen to track the sun’s movements from East to West throughout the day.

Detailed explanation-3: -Examples: Curving of the stem toward sunlight (Positive phototropism) Movement of root away from the light inside the soil (Negative phototropism)