Prokaryotic Cells

Options

A. Have double envelope system
B. Show complex structure
C. Possess cellulosic cell wall
D. Are morphologically simple

Answer

### Step-by-Step Solution:

1. **Understanding Prokaryotic Cells**:
- Prokaryotic cells are defined as cells that lack a true nucleus and membrane-bound organelles. They are simpler in structure compared to eukaryotic cells.

2. **Analyzing the Options**:
- **Option A: Have double envelope system**:
- This statement is incorrect. Prokaryotic cells have a single envelope system, which consists of a plasma membrane and a cell wall. They do not have membrane-bound organelles that would create a double envelope system.

- **Option B: Show complex structure**:
- This statement is also incorrect. Prokaryotic cells are structurally simple. They do not contain organelles like mitochondria or chloroplasts, and their genetic material is not enclosed in a nucleus.

- **Option C: Possess cellulosic cell wall**:
- This statement is incorrect as well. The cell wall of prokaryotic cells is primarily composed of peptidoglycan, not cellulose. Cellulose is found in the cell walls of plants.

- **Option D: Are morphologically simple**:
- This statement is correct. Prokaryotic cells exhibit simple morphology, such as rod-shaped (bacilli), spherical (cocci), or spiral (spirilla) forms. They lack complex structures and organelles.

3. **Conclusion**:
- The correct answer is **Option D: Are morphologically simple**. Prokaryotic cells are characterized by their simplicity in structure and lack of membrane-bound organelles.