Assertion (A) Presence of gree plant is essential for greenhouse
effect.
Reason (R ) Chlorophyll of green plants causes greenhouse effect.

Options

A. If both Assertion and Reason are true and Reason is correct explanation of Assertion.
B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
C. If Assertion is true but Reason is false.
D. If both Assertion and Reason and false.

Answer

To solve the question regarding the assertion and reason about the greenhouse effect, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that the presence of green plants is essential for the greenhouse effect.
- **Analysis**: The greenhouse effect primarily involves gases like carbon dioxide (CO2) and water vapor (H2O) in the atmosphere. While green plants do absorb CO2 during photosynthesis, they are not essential for the greenhouse effect itself. The greenhouse effect can occur independently of the presence of green plants.

2. **Understanding the Reason (R)**:
- The reason states that chlorophyll of green plants causes the greenhouse effect.
- **Analysis**: Chlorophyll is a pigment found in green plants that is crucial for photosynthesis, allowing plants to convert sunlight into energy. However, chlorophyll does not cause the greenhouse effect. The greenhouse effect is caused by the trapping of heat by greenhouse gases such as CO2 and H2O, not by chlorophyll.

3. **Conclusion**:
- Both the assertion and the reason are incorrect. The greenhouse effect does not depend on the presence of green plants, nor is it caused by chlorophyll.

### Final Answer:
Both the assertion (A) and the reason (R) are false.

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