Who concluded from his studies that the presence of a cell wall is a unique feature of plant cells?

Options

A. M. Schleiden
B. T. Swhwann
C. A. V. Leeuwenhoek
D. Robert Hook

Answer

To solve the question, "Who concluded from his studies that the presence of a cell wall is a unique feature of plant cells?" we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Question**: The question asks for the scientist who determined that the cell wall is a unique feature of plant cells.

2. **Review the Options**: The options provided are:
- A) M. Schleiden
- B) T. Swan
- C) Anton van Leeuwenhoek
- D) Robert Hooke

3. **Evaluate Each Option**:
- **Option A: M. Schleiden**: He was a German botanist and co-founder of the cell theory, but he did not specifically conclude that the cell wall is a unique feature of plant cells. Therefore, this option is incorrect.
- **Option B: T. Swan**: His full name is Theodore Swan. He is known for concluding that the cell wall is a unique feature of plant cells. Thus, this option is likely correct.
- **Option C: Anton van Leeuwenhoek**: He is known as the father of microbiology and did not specifically focus on plant cells or cell walls. Hence, this option is incorrect.
- **Option D: Robert Hooke**: He discovered cells but did not specifically conclude that the cell wall is a unique feature of plant cells. Thus, this option is also incorrect.

4. **Select the Correct Answer**: Based on the evaluations, the correct answer is **Option B: T. Swan**.

### Final Answer:
The scientist who concluded that the presence of a cell wall is a unique feature of plant cells is **T. Swan**.

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