Which of the following statements is incorrect ?

Options

A. Word antibiotic is a misnomer. Anti is a Greel word that means 'orgainst' and bios means 'life' together they mean against life (in the context of disease causing organisms), whereas with reference to human beings, they are pro-life and not agnist
B. Flocs are masses of bacteria with interwoven fungal filaments which form mesh-like structures.
C. Componenets of biogas are methane `(50 - 70%)`, carbon dioxide `(30 - 40%)` and traces of hydrogen, nitrogen and `H_(2)S`
D. None of these

Answer

To determine which statement is incorrect, we will analyze each statement provided in the question step by step.

### Step-by-Step Solution:

1. **Statement Analysis**:
- **Statement 1**: "The word antibiotic is a misnomer."
- **Explanation**: The term "antibiotic" is derived from the Greek words "anti" meaning "against" and "biotic" meaning "life." While it literally means "against life," antibiotics are substances that specifically target bacteria and help in treating infections. Therefore, while the literal meaning may suggest they are against life, in practice, they are beneficial for human health as they combat harmful bacteria. Thus, this statement is correct in highlighting the misnomer aspect.

2. **Statement 2**: "Phlox are masses of bacteria with interwoven fungal filaments which form a mesh-like structure."
- **Explanation**: This statement describes "phlox" accurately. Phlox, or microbial mats, are indeed composed of bacteria and fungi that interweave to create a mesh-like structure. This description aligns with the biological understanding of such formations. Hence, this statement is also correct.

3. **Statement 3**: "Components of biogas are methane, carbon dioxide, and traces of hydrogen, nitrogen, and hydrogen sulfide."
- **Explanation**: This statement is accurate as well. Biogas primarily consists of methane (50-70%), carbon dioxide (30-40%), and traces of other gases such as hydrogen, nitrogen, and hydrogen sulfide. This aligns with what is known about biogas composition. Therefore, this statement is correct.

4. **Conclusion**:
- Since all three statements are correct, the option that states "none of these" (meaning none of the statements are incorrect) is the correct choice.

### Final Answer:
The correct answer is: **None of these** (all statements are correct).