1.

Explain two tropic movements with suitable examples.

Answer»

1. Phototropism: Response of plant to light cite example is called phototropism. 

Ex: sunflower 

2. Geotropism: Response of a plant to gravitational force 

Ex: root growth of plant 

3. Hydrotropism: Response of root to water availability in the soil. 

Ex : Plants which are growing very close to rocks and walls.

4. Thigmotropism: Response to make contact or touch is called Thigmotropism. 

5. Chemotropism: Response to chemical is called chemotropism (Stigma secretes sugary substances)



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