AP BIOLOGY

Detailed explanation-1: -Geotropism is the plant response to the stimulus of gravity. Plant growth away from gravity is called negative geotropism. The stem shows negative geotropism. Plant growth towards gravity is called positive geotropism.

Detailed explanation-2: -Geotropism (also called gravitropism) is the directional growth of an organism in response to gravity. Roots display positive geotropism when they grow downward, while shoots display negative geotropism when they grow upward.

Detailed explanation-3: -Gravitropism is the ability of plants to perceive and respond to the gravity vector and orient themselves accordingly. The gravitropic pathway can be divided into three main components: perception, biochemical signaling, and differential growth.

Detailed explanation-4: -Lesson. Explain to students that plants respond to different forces; sunflowers follow the light, pea tendrils grasp whatever they touch, and plants respond to gravity. This response to gravity is called Geotropism. Geotropism causes roots to grow downward, and stems and leaves to grow up.

Detailed explanation-5: -Geotropism is a type of tropism where plants show some growth in response to gravity. Roots growing downwards is an example of geotropism.