Plant movements

Movement in plants
The plants are fixed at a place with their roots in the ground, so they cannot move from one place to another.That is plants cannot show locomotion ( movement of the entire body). But plants can move their individual parts. The two types of plant movements are :- 1.) Tropic movements 2.) Nastic movements

Tropic movements
The growth movement in plants in which the direction of the external stimulus is a factor is known as Tropic movements.
 * .) the growth movement towards the direction of stimulus is known as positive tropism.
 * .)the growth movement away from the direction of stimulus is known as negative tropism.

ex:- Bending of shoot towards sunlight is a Positive Tropic movement


 * Types of tropism - Stimulus
 * 1.Hydro tropism   - Water
 * 2.Photo tropism   - Light
 * 3.Chemo tropism   - Chemical
 * 4.Thigmo tropism   - Touch
 * 5.Geo tropism      - Gravity

Nastic movements
Non growth movements of a plant where the external stimulus is not the determinant is know as nastic movements.

ex:- Closing of leaves of the Touch-me-Not plant is a nastic movement.