AP BIOLOGY

Detailed explanation-1: -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-2: -Plant roots grow downward, and a young seedling shoots up towards the sky from underground due to gravitropism, aka geotropism, which is a tendency for something to grow towards or away from earth as a result of gravitational influence.

Detailed explanation-3: -Plants have the ability to sense a change in the direction of gravity, which leads to the re-orientation of their growth direction, so-called gravitropism. In general, plant stems grow upward (negative gravitropism), whereas roots grow downward (positive gravitropism).

Detailed explanation-4: -Gravitropism. Plant parts tend to either grow in the same direction as gravity, or in the opposite direction. This type of tropism is called gravitropism. For example, the roots of most plants exhibit positive gravitropism when they grow downward.

Detailed explanation-5: -: a tropism (as of plant roots or shoots) in which gravity is the stimulus : geotropism. No matter what the orientation of a seed for instance, the roots will always grow down to the soil. This has a special name, gravitropism, and is movement in response to the force of gravity …