Question

Write a short note on response to stimuli by plants

Answer 1

Plants respond to different stimuli usually by showing growth repsonses….this phenomena of responding is usually named as tropism…it could either be positive or negative…when towards the stimuli called positive and when away from the stimuli called negative….

• Phototropism: the growth response of a plant in response to light direction. Different parts of a plant exhibit different reactions to light. Stems exhibit positive phototropism while most roots exhibit negative phototropism.

• Chemotropism: the growth response of a plant to a particular chemical. Roots grow toward useful minerals in the soil but away from acids.

• Geotropism: the growth response of a plant in response to gravity. Roots exhibit positive geotropism while stems and leaves exhibit negative geotropism.

• Thigmotropism: the growth response of a plant to physical contact (touch). Plants that cling to physical structures such as walls exhibit positive thigmotropism.

• Hydrotropism: the growth response of a plant to water. Roots exhibit positive hydrotropism

PLS MARK ME AS THE BRAINLIEST