Topic Details (Notes format)

Organisms and Populations

Subject: General Science

Book: NCERT Biology Class 12

Study of the interaction between organisms and their environment.
- **Population Ecology**:
- Birth rate, death rate, immigration, emigration.
- **Adaptations**:
- Structural, physiological, and behavioral.
- **Species Interactions**:
- Mutualism, commensalism, predation.

**Possible Exam Questions:**
1. Define population density and its significance.
2. Explain the concept of mutualism with examples.
3. How do organisms adapt to their environment?
4. What is the role of immigration and emigration in population dynamics?
5. Describe the predator-prey relationship with examples.

Practice Questions

Which part of the cell contains the genetic material?

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What is the approximate age of the Earth?

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Which planet has the strongest gravitational force?

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Which disease is caused by a virus?

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Which gas is commonly used in balloons to make them float?

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What type of bond is formed by sharing electrons between atoms?

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Which part of the human eye is responsible for focusing light on the retina?

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What is the SI unit of power?

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Which vitamin is essential for calcium absorption?

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What is the chemical formula for carbon dioxide?

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