Which of the following is not an ex-situ conservation

Options

A. Gene bank
B. Biosphere reserve
C. Crypreservation
D. In vitro culture.

Answer

To determine which of the following options is not an ex-situ conservation method, we first need to understand the concept of ex-situ conservation.

### Step-by-Step Solution:

1. **Define Ex-situ Conservation**: Ex-situ conservation refers to the conservation of species outside their natural habitats. This method is used to protect endangered species by maintaining them in controlled environments.

2. **Identify Examples of Ex-situ Conservation**: Common examples of ex-situ conservation include:
- **Gene Banks**: Facilities that store genetic material, such as seeds or sperm, for future use.
- **Cryopreservation**: The process of preserving cells, tissues, or organs at very low temperatures, often using liquid nitrogen.

3. **Contrast with In-situ Conservation**: In-situ conservation, on the other hand, involves the conservation of species within their natural habitats. Examples include:
- **Biosphere Reserves**: Protected areas that conserve biodiversity and promote sustainable development.
- **National Parks**: Areas designated to protect wildlife and natural resources in their natural environment.

4. **Analyze the Options**: Given the question about which option is not an ex-situ conservation method, we can evaluate the options provided (though they are not listed here, we will assume common examples).

5. **Select the Correct Answer**: If one of the options is a biosphere reserve or national park, that would be the correct answer as these are examples of in-situ conservation.

### Conclusion:
The correct answer to the question "Which of the following is not an ex-situ conservation?" is likely the option that refers to a biosphere reserve or a national park.

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