Question

distinguish between tropic and nastic movements of plant

Answer 1

Answer:

hey mate here's ur answer:

Distinguish between tropic and nastic movements of plant:

TROPIC MOVEMENTS:

1.) It can be easily observed in roots and stems.

2.) It is due to unilateral stimulus which causes unequal growth on the two sides of a stem, root and tendril.

3.) Movements is related to stimulus, i.e., plant organs item move towards source of stimulus or away from it. Stimulus which causes movements in plants are gravity, light, touch, water and chemical substance.

4.) Example: Bending of root towards gravity and shoot towards light.

NASTIC MOVEMENTS:

1.) It is clearly observe in bilaterally symmetrical organs such as leaves and petals of flowers.

2.) The movements occur due to stimulus of light and temperature.

3.) Opening and closing of flowers of evening primrose and tobacco at the night and day respectively. This is due to unequal growth.

4.) Example:Leaves of 'touch-me-not' plant bend droop on touching.

Hope this helps you....

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