Lesson eLearning

Which of the following microorganisms is primarily responsible for the production of the antibiotic streptomycin?

medium MCQ 2 marks Class 12 · Biology · Microbes in Human Welfare
  1. Penicillium chrysogenum
  2. Streptomyces griseus
  3. Bacillus subtilis
  4. Aspergillus niger
Answer
Streptomyces griseus

The correct answer is Streptomyces griseus — The other options produce different antibiotics.

Step-by-step solution

  1. Streptomycin is an aminoglycoside antibiotic.
  2. It is produced by the actinomycete Streptomyces griseus.
  3. Therefore the correct organism is Streptomyces griseus.
  4. The other options produce different antibiotics.
Common mistake: Choosing Penicillium chrysogenum because it is a well‑known antibiotic producer

Concept tested: Source of streptomycin antibiotic

Published · How this solution was prepared and checked

← All Microbes in Human Welfare questions