Question

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Eye formation in Swiss cheese take place which is one of the characteristics of Swiss cheese.
Reason (R): Swiss cheese undergo propionic acid fermentation which is brought about by propionic acid bacteria.
In the light of the above statements, choose the most appropriate answer.

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• B. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• C. (A) is correct but (R) is not correct
• D. (A) is not correct but (R) is correct

Hint:

Swiss cheese eyes = CO$_2$ from propionic acid bacteria.

Answer 1

The Correct Option is A

Concept: Swiss cheese is characterized by the presence of holes or “eyes”, which are formed due to gas production during fermentation.

Step 1: Eye formation.

• Eyes are holes formed in cheese
• Caused by gas accumulation

Step 2: Microbial activity.
Propionic acid bacteria:
• Convert lactic acid into propionic acid, acetic acid, and CO$_2$

Step 3: Gas formation.

• CO$_2$ gas accumulates
• Forms bubbles → creates holes (eyes)

Step 4: Linking statements.
Assertion: Eye formation occurs → True
Reason: Propionic fermentation causes CO$_2$ production → True and explains the assertion

Step 5: Conclusion.
Both statements are correct and Reason explains Assertion.