Explain with examples three types of nastic movements

Answer:nyctinasty

Haptonasty

Chemonasty

Explanation: nyctinasty is the sleep movement exhibited by some plants e. g flowers of morning glory

Haptonasty is in response to touch e. g Venus fly trap

Chemonasty production of enzymes in response to chemicals e. g insect in a Venus flytrap

1. Tropisms are directional movements or growth response of a plant to the stimulus. In nastic movements, the response of the plant is non-directional. An example of tropism is thigmotropism, which is a growth response to the touch stimulus.

2. Nyctinasty is the nastic movement of plant parts such as leaves and petals in response to darkness.

3. Thigmonasty is a form of nastic movement (of a plant or a fungus) as a response to touch or vibration.