Topic Details (Notes format)

Evolution and Natural Selection

Subject: General Science

Book: NCERT Biology Class 12

Study of changes in species over time.
- **Darwin’s Theory of Evolution**:
- Natural selection and survival of the fittest.
- **Evidences of Evolution**:
- Fossil records, homologous structures.
- **Genetic Drift and Speciation**:
- Role in biodiversity.

**Possible Exam Questions:**
1. Explain Darwin’s theory of natural selection.
2. What is the role of genetic drift in evolution?
3. Discuss the evidence supporting evolution.
4. What is speciation? How does it occur?
5. Differentiate between homologous and analogous organs.

Practice Questions

Which law states that energy cannot be created or destroyed?

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What is the unit of electrical resistance?

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Which disease is caused by the deficiency of vitamin C?

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Which part of the cell is responsible for energy production?

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Which type of bond is present in sodium chloride?

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Which process in plants is responsible for the loss of water vapor?

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Which type of radiation has the shortest wavelength?

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Which organelle is known as the "powerhouse of the cell"?

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Which part of the cell contains the genetic material?

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What is the term for an organism that can make its own food?

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