HORTICULTURE

Detailed explanation-1: -Tropism is the growth movement, and its direction is determined by the direction of the stimulus influencing the plant. Roots growing downward and away from light find the soil, minerals, and water they require.

Detailed explanation-2: -Phototropism is the ability of the plant to re-orient the shoot growth towards a direction of light source. Phototropism is important to plants as it enhances the ability of plants to optimize their photosynthetic capacity.

Detailed explanation-3: -Plants have a variety of developmental, physiological, and growth responses to light-sometimes only to particular wavelengths of light. In phototropism a plant bends or grows directionally in response to light. Shoots usually move towards the light; roots usually move away from it.