State whether the following statements are true or false.
Malaria can be controlled by destroying the alternate host.
A. True
B. False

Answer

To determine whether the statement "Malaria can be controlled by destroying the alternate host" is true or false, we need to analyze the role of hosts in the life cycle of the malaria-causing organism, Plasmodium.

### Step-by-Step Solution:

1. **Identify the Cause of Malaria**:
- Malaria is caused by the Plasmodium parasite, with Plasmodium falciparum being the most common species responsible for severe cases.

2. **Understand the Hosts Involved**:
- Plasmodium has two hosts in its life cycle:
- **Primary Host**: The female Anopheles mosquito, which carries the infective stage of the parasite.
- **Secondary Host**: Humans, where the parasite causes the disease.

3. **Analyze the Statement**:
- The statement suggests that malaria can be controlled by destroying the "alternate host."
- In the context of malaria, the "alternate host" would refer to the female Anopheles mosquito, which is the carrier of the parasite.

4. **Evaluate the Impact of Destroying the Host**:
- If the female Anopheles mosquito, which is the primary host, is destroyed, it would significantly reduce the transmission of Plasmodium to humans, thus controlling malaria.
- Therefore, destroying the primary host (female Anopheles mosquito) can help control the disease.

5. **Conclusion**:
- Since the statement refers to controlling malaria by destroying the primary host (female Anopheles mosquito), it is **True** that this action can help control malaria.

### Final Answer:
A. True