Question

explain any two types of Nastic Movement​

Answer 1

Answer:

first is mimosa pudica plant when we touch its leaves it get shrink and folded which is thigmonastism which means nastic response to touch because at end of its leaves there is a swell part which is filled with water and when u touch its leaves the water get out of it due to which the leave get shrink....

second is moon flower which grows at night and get close by sunlight it is photo nastism which means photo nastism

Answer 2

Answer:

Explanation:

1. Seismonastic Movement:

This type of movement is caused by the mechanical stimuli like shock, touch or contact, fast moving wind, rain drops, etc. In some parts of plants Seismonastic movement is seen in the stigmas, stamens and leaves. Example: Mimosa Pudica plant, Biophytum sensitivum, Neptunia etc.

2. Photonasty Movement:

The non-directional movement of a plant part usually in the petals of flowers in response to light is photonasty movement. The stimulus in Photonasty is light. Many petals of flowers open in the daylight and closed in the evening in response to the intensity of light. This is a growth movement in plants and an example of Photonastic movement. Examples are: Dandelion flower, Moonflower, flower of Cestrum Nocturnum etc.