Question

Which of the following statements is incorrect?

• A. Pathogenic bacteria cause $90\%$ of human diseases.
• B. A large number of antibiotics are produced by actinomycetes (e.g., Streptomyces), which are a class of fungi.
• C. $N_{2}$-fixing bacteria pick up free $N_{2}$ from soil atmosphere and convert it into nitrogenous compounds.
• D. Archaebacteria differ from other bacteria in having a different cell wall structure and this feature is responsible for their survival in extreme conditions

Answer 1

Answer: (B)

Maximum number of antibiotics are produced by mycelial bacteria known as actinomycetes, e.g., Streptomycin - Streptomyces griseus, Chloromycetin or chloramphenicol - Streptomyces venezuelae and S. lavendulae.