CBSE Biology Self-Practice Test Paper : Set I
1. Define evolution.
Answer :
2. What type of nervous system is observed in Cnidarians?
Answer :
3. Name the process by which food is digested by Amoeba.
Answer :
4. How does gravity and sudden change in the direction of the gas flow separates the particulate pollutants?
Answer :
5. Why is DNA considered as the most perfect tool in genetic engineering? Explain.
Answer :
6. How does temperature determines sex in some organisms? Explain. Name the organisms in which this phenomenon occurs.
Answer :
7. Mention the characteristics of potable water.
Answer :
8. How is control and coordination brought by phytohormones in plant? Explain by taking suitable examples.
Answer :
9. What role is played by the bile juice and pancreatic juice in the duodenum?
Answer :
10. Why is there a need for clotting of blood? Explain the process with the help of a schematic representation of the process.
Answer :