Select incorrect statement regarding prokaryotes :

Options

A. Prokaryotes exhibit a wide variety of shapes and functions
B. All prokaryotes have a cell membrane surrounding the cell wall
C. The genetic material is basically naked not enveloped by a nuclear membrane
D. The fluid matrix filling the cell is the cytoplasm

Answer

**Step-by-Step Solution:**

1. **Understanding Prokaryotes**: Prokaryotes are unicellular organisms that lack a nucleus and membrane-bound organelles. They are characterized by their simple cell structure.

2. **Analyzing the Statements**:
- **Option 1**: "Prokaryotes exhibit a wide variety of shapes and functions."
- This statement is correct. Prokaryotes can be found in various shapes such as cocci (spherical), bacilli (rod-shaped), and spirilla (spiral-shaped), and they perform diverse functions.

- **Option 2**: "All Prokaryotes have a cell membrane that surrounds the cell wall."
- This statement is incorrect. In prokaryotic cells, the cell wall is located outside the cell membrane, not the other way around. Thus, the correct structure is that the cell wall surrounds the cell membrane.

- **Option 3**: "The genetic material is basically naked, not enveloped by the nuclear membrane."
- This statement is correct. Prokaryotes do not have a true nucleus; their genetic material is not enclosed by a nuclear membrane, making it "naked."

- **Option 4**: "The fluid matrix filling the cell is the cytoplasm."
- This statement is also correct. The cytoplasm is the gel-like substance within the cell membrane where cellular components are suspended.

3. **Identifying the Incorrect Statement**: After analyzing all the options, the incorrect statement regarding prokaryotes is **Option 2**.

**Final Answer**: The incorrect statement regarding prokaryotes is: "All Prokaryotes have a cell membrane that surrounds the cell wall."

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