Eukaryotes possess

Options

A. One envelope system
B. Double envelope system
C. Triple envelope system
D. No envelope system

Answer

To answer the question "Eukaryotes possess," we need to analyze the options provided and understand the concept of the cell envelope in relation to eukaryotic and prokaryotic organisms.

### Step-by-Step Solution:

1. **Understanding the Term "Envelope System":**
- The term "envelope system" refers to the outer structure of a cell, which can include membranes and walls. In biological terms, this usually involves the cell membrane and, in some cases, a cell wall.

2. **Identifying the Characteristics of Prokaryotes:**
- Prokaryotes, which include bacteria and archaea, typically have a cell envelope that consists of a cell membrane and a cell wall. This structure is essential for their survival and function.

3. **Analyzing Eukaryotic Cells:**
- Eukaryotic cells, which include plants, animals, fungi, and protists, do not have a cell envelope in the same sense as prokaryotes. Instead, they possess a cell membrane, and in some cases, a cell wall (like in plants and fungi), but they do not have an envelope system as defined for prokaryotes.

4. **Evaluating the Options:**
- Option A: "One envelope system" - Incorrect, as eukaryotes do not have this.
- Option B: "Double envelope system" - Incorrect, as eukaryotes do not have this.
- Option C: "Triple envelope system" - Incorrect, as eukaryotes do not have this.
- Option D: "No envelope system" - Correct, as eukaryotes do not possess an envelope system like prokaryotes.

5. **Conclusion:**
- The correct answer is Option D: "No envelope system."

### Final Answer:
Eukaryotes possess no envelope system.