Question

Match List-I with List-II.

List-I	List-II
A. Lactic acid bacteria B. Clostridium spp. C. Pseudomonas spp. D. Enterobacteriaceae	I. Obligate aerobes II. Facultative anaerobes III. Obligate anaerobes IV. Aerotolerant anaerobes

• A. A-II, B-III, C-IV, D-I
• B. A-IV, B-III, C-I, D-II
• C. A-IV, B-II, C-III, D-I
• D. A-I, B-III, C-II, D-IV

Hint:

Clostridium → anaerobic, Pseudomonas → aerobic.

Answer 1

The Correct Option is B

Concept: Microorganisms differ in oxygen requirements which classify them into aerobic, anaerobic, facultative, or aerotolerant groups.

Step 1: Lactic acid bacteria (A).

• Grow without oxygen but tolerate its presence So, A $\rightarrow$ IV (Aerotolerant anaerobes).

Step 2: Clostridium spp. (B).

• Strict anaerobes So, B $\rightarrow$ III.

Step 3: Pseudomonas spp. (C).

• Require oxygen So, C $\rightarrow$ I (Obligate aerobes).

Step 4: Enterobacteriaceae (D).

• Can grow with or without oxygen So, D $\rightarrow$ II (Facultative anaerobes).

Step 5: Final matching. \[ A-IV,\; B-III,\; C-I,\; D-II \] Final Conclusion:
Option (2) is correct.