Read the following four satements (A -D) about certain mistakes in two of them :
(A) Dough, which is used for making foods such as dosa and idli is fermented by fungi and algae
(B) Toddy a traditional drink of southern India is made by fermenting sap from palms.
(C ) Large holes in 'Swiss cheese' are due to production of large amount of methane by Propionibacterium sharmanii
(D) In our stomatch, lactic acid bacteria play very beneficial role in checking disease -causing microbes
Which of the two statements are having mistakes?

Options

A. Statements (A) & (C )
B. Statements (A) & (B)
C. Statements (B) & (C )
D. Statements (C ) & (D)

Answer

To determine which statements contain mistakes, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement A**: "Dough, which is used for making foods such as dosa and idli is fermented by fungi and algae."
- **Analysis**: This statement is incorrect. The dough used for making dosa and idli is primarily fermented by yeast (a type of fungus) and not by algae. Algae do not play a role in the fermentation of these foods.
- **Correction**: Dough for dosa and idli is fermented by yeast (fungi), not algae.

2. **Statement B**: "Toddy, a traditional drink of southern India is made by fermenting sap from palms."
- **Analysis**: This statement is correct. Toddy is indeed made by fermenting the sap from palm trees, and it is a traditional drink in southern India.
- **Conclusion**: No correction needed.

3. **Statement C**: "Large holes in 'Swiss cheese' are due to the production of a large amount of methane by Propionibacterium sharmanii."
- **Analysis**: This statement is incorrect. The holes in Swiss cheese are actually caused by the production of carbon dioxide by bacteria such as Propionibacterium freudenreichii (not sharmanii). Methane is not produced in this process.
- **Correction**: The holes in Swiss cheese are due to the production of carbon dioxide by Propionibacterium freudenreichii.

4. **Statement D**: "In our stomach, lactic acid bacteria play a very beneficial role in checking disease-causing microbes."
- **Analysis**: This statement is correct. Lactic acid bacteria are beneficial and help maintain a healthy gut environment by inhibiting harmful microbes.
- **Conclusion**: No correction needed.

### Final Conclusion:
The statements containing mistakes are **A** and **C**.