The term protoplasm was coined by

Options

A. Robert Hooke
B. Dujardin
C. Robert Brown
D. Purkinje

Answer

To determine who coined the term "protoplasm," we can follow these steps:

1. **Identify the Scientists Mentioned**: The question provides four options: A. Robert Hooke, B. Dujardin, C. Robert Brown, and D. Purkinje. We need to analyze the contributions of each scientist.

2. **Review Contributions**:
- **Robert Hooke**: Known for discovering cells and coining the term "cell" after observing cork under a microscope.
- **Dujardin**: He studied living cells and is known for his work on protoplasm but did not coin the term.
- **Robert Brown**: He is recognized for discovering the nucleus in plant cells.
- **Purkinje**: He is credited with coining the term "protoplasm," which refers to the living substance within a cell.

3. **Conclusion**: Based on the contributions of these scientists, we can conclude that the term "protoplasm" was coined by Purkinje.

4. **Final Answer**: The correct answer is D. Purkinje.