HORTICULTURE

Detailed explanation-1: -The survival of terrestrial plants depends upon the capacity of roots to obtain water and nutrients from the soil. Directed growth of roots in relation to a gradient in moisture is called hydrotropism and begins in the root cap with the sensing of the moisture gradient.

Detailed explanation-2: -The movement of a plant in response to the concentration of water is known as hydrotropism.

Detailed explanation-3: -Hydrotropism is a plant’s response to a stimulus or gradient in water concentration that determines the direction of growth. Roots exhibit a positive hydrotropic response as they move and grow towards the water.

Detailed explanation-4: -Hydrotropism is the movement of a plant part in response to a stimulus (water). Example: The plant roots always move towards water hence shows positive hydrotropism.