HORTICULTURE

Detailed explanation-1: -Gravitropism. It is a type of tropism where plants show some growth in response to gravity. Stems are negative to the gravitropism while roots are positive to the gravitropism. This is also referred to as geotropism.

Detailed explanation-2: -Geotropism is a similar occurrence to phototropism where the plant exhibits directional growth in response to gravity. The shoot tip illustrates negative geotropism (grows against the force of gravity) while the root tip exhibits positive geotropism (grows in the same direction as gravity).

Detailed explanation-3: -Plant Tropisms Growing toward gravity is called geotropism. Plants also exhibit phototropism, or growing toward a light source. This response is controlled by a plant growth hormone called auxin.