NEET BIOLOGY

Detailed explanation-1: -The response or the movement of the plant parts towards the force of gravity is called geotropism . The downward growth of roots towards the pull of gravity is called positive geotropism.

Detailed explanation-2: -Gravitropism ensures that roots grow into the soil and that shoots grow toward sunlight. Growth of the shoot apical tip upward is called negative gravitropism, whereas growth of the roots downward is called positive gravitropism.

Detailed explanation-3: -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-4: -In plants, the general response to gravity is well known: their roots respond positively, growing down, into the soil, and their stems respond negatively, growing upward, to reach the sunlight.