Question

2. Define gravitropism and its importance to plant physiology.

Answer 1

Gravitropism is a process of growth movement by a plant in response to gravity. It is a characteristic of all higher and many lower plants.

Gravitropism has an important impact on plant physiology. It dictates upward shoot growth to ensure a proper positioning of the leaves for efficient photosynthesis process and gas exchange. It also directs roots to grow downward in soil, where reach out and take up the water and mineral ions, which are required for the development of plant.