Regarding prokaryotic cells
(I) Absence of nuclear membrane
(II) Absence of membrane - bound protoplasm.
(III) Compartmentalized nuclear material and cytoplasm
(IV) Absence of nucleolus

Options

A. I incorrect
B. I and II correct
C. II and III only incorrect
D. IV only correct

Answer

To analyze the statements regarding prokaryotic cells, we will evaluate each statement one by one.

### Step-by-Step Solution:

1. **Statement I: Absence of nuclear membrane**
- Prokaryotic cells do not have a defined nucleus; instead, their genetic material is located in a region called the nucleoid. Since there is no nucleus, there is also no nuclear membrane.
- **Conclusion**: This statement is **correct**.

2. **Statement II: Absence of membrane-bound protoplasm**
- Prokaryotic cells do have protoplasm, which is the living content of the cell. However, they lack membrane-bound organelles. The term "membrane-bound protoplasm" can be misleading. It is more accurate to say that prokaryotic cells do not have membrane-bound organelles, but they do have protoplasm.
- **Conclusion**: This statement is **incorrect**.

3. **Statement III: Compartmentalized nuclear material and cytoplasm**
- Prokaryotic cells do not have compartmentalized structures like eukaryotic cells. The genetic material is not enclosed in a membrane-bound nucleus, and the cytoplasm is not divided into compartments. Therefore, this statement is incorrect.
- **Conclusion**: This statement is **incorrect**.

4. **Statement IV: Absence of nucleolus**
- The nucleolus is a structure found within the nucleus of eukaryotic cells, where ribosomal RNA is produced. Since prokaryotic cells lack a nucleus, they also lack a nucleolus.
- **Conclusion**: This statement is **correct**.

### Summary of Statements:
- Statement I: Correct
- Statement II: Incorrect
- Statement III: Incorrect
- Statement IV: Correct

### Final Answer:
The correct statements regarding prokaryotic cells are I and IV.