Which of the following statements is correct ?
(A) Mycoplasma has no cell wall
(B) Viruses can multiply only when they are present inside the living cell.
(C) True sexuality s not found in bacteria
(D) Mycoplasma can not survive without `O_(2)`

Options

A. A, B,C & D
B. A,B,D
C. A, B, C
D. C & D

Answer

To determine which of the statements is correct, let's analyze each option step by step:

### Step 1: Analyze Statement A
**Statement A:** Mycoplasma has no cell wall.
- **Explanation:** Mycoplasma is a type of bacteria that is unique because it lacks a cell wall. This characteristic makes it different from most other bacteria, which do have cell walls.
- **Conclusion:** This statement is **true**.

### Step 2: Analyze Statement B
**Statement B:** Viruses can multiply only when they are present inside the living cell.
- **Explanation:** Viruses are considered non-living entities when outside a host. They require a living cell to replicate and multiply. Once they enter a host cell, they hijack the cellular machinery to reproduce.
- **Conclusion:** This statement is **true**.

### Step 3: Analyze Statement C
**Statement C:** True sexuality is not found in bacteria.
- **Explanation:** Bacteria reproduce asexually through binary fission. While they can exchange genetic material through processes like conjugation, they do not exhibit true sexual reproduction as seen in higher organisms.
- **Conclusion:** This statement is **true**.

### Step 4: Analyze Statement D
**Statement D:** Mycoplasma cannot survive without O₂.
- **Explanation:** Mycoplasma species are known to be capable of surviving in anaerobic conditions (without oxygen). They are not strictly aerobic and can adapt to various environments.
- **Conclusion:** This statement is **false**.

### Final Conclusion
After analyzing all the statements:
- Statement A: True
- Statement B: True
- Statement C: True
- Statement D: False

The correct option that includes all true statements is **A, B, C**. Therefore, the correct answer is **Option C**.

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