AP BIOLOGY

Detailed explanation-1: -The movement or growth of the plant parts is towards the pull of gravity, it is known as positive geotropism. Example-Roots (grow downwards) Whereas if the movement of the plant parts is against or opposite to the pull of gravity, it is known as negative geotropism. ex-Stem (grow upwards).

Detailed explanation-2: -when a root grows in the direction of the force of gravity, this is known as a positive geotropism.

Detailed explanation-3: -Roots are an example of positive geotropism.

Detailed explanation-4: -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: -The downward growth of roots due to the pull of gravity is positive geotropism.