BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Some common plant stimuli include light, gravity, water, movement of the sun, and touch. The naming of the tropism is associated with the stimulus. For example, the movement of plant roots towards water is called hydrotropism.

Detailed explanation-2: -○ Phototropism-The way a plant grows or moves in response to light. ○ Gravitropism-The way a plant grows or moves in response to gravity; also called geotropism. ○ Hydrotropism-The way a plant grows or moves in response to water. ○ Thigmotropism-The way a plant grows or moves in response to touch.

Detailed explanation-3: -When trees bend in the wind, for example, growth is usually stunted and the trunk thickens. Strengthening tissue, especially xylem, is produced to add stiffness to resist the wind’s force.

Detailed explanation-4: -Plants respond to various stimuli. Response to environmental stimuli is known as tropism and the stimuli may be light, water, gravity, etc. Various types of tropism are: Phototropism: Movement or growth of plants towards light is called phototropism.