AP BIOLOGY

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: -The correct answer is: Phototropism. The movement of a plant part in response to light is called phototropism. The plant’s shoot shows positive phototropism whereas, the plant’s root show negative phototropism.

Detailed explanation-3: -The response of leaves to sunlight is called phototropism.

Detailed explanation-4: -Phototropism is the growth of plant shoots towards the light.

Detailed explanation-5: -The shoot of the plant grows towards sunlight and this is called phototropism. The roots grow towards gravity or the earth and this is called geotropism. Also, when there is less availability of water the root ends extend towards the moist soil that contains water.