NEET BIOLOGY

Detailed explanation-1: -Geotropism is a type of tropism where plants show some growth in response to gravity. Roots growing downwards is an example of geotropism.

Detailed explanation-2: -The movement of plant parts in response to the direction of gravity is known as geotropism. The growth of plant roots is an example of geotropism as it grows towards the direction of gravity.

Detailed explanation-3: -Phototropism is a response to the stimulus of light, whereas geotropism (also called gravitropism) is a response to the stimulus of gravity . Plants responses to gravity: when the stem grows against the force of gravity, this is known as a negative geotropism.

Detailed explanation-4: -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-5: -(a) (i) The bending of shoots or other plant parts in response to light is known as phototropism. (ii) The bending or growth of roots towards gravity is known as geotropism.