Which is absent in prokaryotes ?

Options

A. Nuclear envelope
B. Golgi apparatus
C. Mitochondria
D. All the above.

Answer

**Step-by-Step Solution:**

1. **Understanding Prokaryotes**:
- Prokaryotes are primitive organisms that lack a true nucleus and membrane-bound organelles.

2. **Identifying Key Features**:
- A true nucleus is characterized by being surrounded by a nuclear envelope (nuclear membrane). In prokaryotes, the genetic material is present in a region called the nucleoid, which is not enclosed by a membrane.

3. **Listing Absent Organelles**:
- Prokaryotes do not have the following membrane-bound organelles:
- Nuclear envelope
- Golgi apparatus
- Mitochondria
- Endoplasmic reticulum
- Chloroplasts
- Lysosomes

4. **Analyzing the Options**:
- The question provides the following options:
- A) Nuclear envelope
- B) Golgi apparatus
- C) Mitochondria
- D) All of the above
- Since all the listed organelles are absent in prokaryotes, we can conclude that the correct answer is option D.

5. **Final Conclusion**:
- Therefore, the answer to the question "Which is absent in prokaryotes?" is **D) All of the above**.

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