Which is incorrect about malarial disease?

Options

A. It occurs due to bite of male mosquito.
B. Its causative organism is Plasmodium.
C. It can be controlled by antimalarial drugs.
D. Its symptoms include fever, paroxysms of chills etc.

Explanation

### Step-by-Step Solution:

1. **Identify the Statements**: The question asks which statement about malarial disease is incorrect. We need to evaluate the statements provided.

2. **Evaluate the First Statement**: The first statement claims that malaria occurs due to the bite of a male mosquito. This is incorrect because malaria is transmitted by the bite of an infected female Anopheles mosquito, not a male mosquito.

3. **Evaluate the Second Statement**: The second statement mentions that the causative organism is Plasmodium. This is correct. Plasmodium is a protozoan responsible for malaria.

4. **Evaluate the Third Statement**: The third statement states that malaria can be controlled by anti-malarial drugs. This is also correct. Anti-malarial drugs are used to treat and prevent malaria.

5. **Evaluate the Fourth Statement**: The fourth statement describes the symptoms of malaria, which include fever and paroxysms of chills. This is correct as well.

6. **Conclusion**: The first statement is the only incorrect statement regarding malarial disease. Therefore, the answer to the question is that malaria does not occur due to the bite of a male mosquito.