Which of the following microbes is NOT involved in the preparation of household products? A. Aspergillus niger, B. Lactobacillus,…

Question

Which of the following microbes is NOT involved in the preparation of household products? A. Aspergillus niger, B. Lactobacillus, C. Trichoderma polysporum, D. Saccharomyces cerevisiae, E. Propionibacterium sharmanii.

Choose the correct answer from the options given below:

1. A. A and B only
2. B. A and C only (Correct answer)
3. C. C and D only
4. D. C and E only

Correct Answer

Option B — A and C only

Detailed Solution & Explanation

The correct answer is A and C only.

Key Points

• Household products: *Lactobacillus* (curd), *Saccharomyces cerevisiae* (toddy/bread) and *Propionibacterium sharmanii* (swiss cheese) — B, D, E are used for household products.
• *Aspergillus niger* (industrial citric acid) and *Trichoderma polysporum* (cyclosporin A, a biocontrol/industrial product) are industrial, not household, microbes — so A and C are the answer.