The term protoplast was coined by

Options

A. Strasburger
B. Hanstein
C. Butschili
D. Fischer

Answer

### Step-by-Step Solution:

1. **Identify the term "protoplast":** The term "protoplast" refers to the living part of a cell, which includes the cell membrane and the cytoplasm, excluding the cell wall.

2. **Determine who coined the term:** The term "protoplast" was coined by Hans Deen.

3. **Understand the components of a protoplast:** A protoplast consists of the cell membrane and the cytoplasm, which contains various organelles such as the nucleus, mitochondria, ribosomes, and vacuoles (in plant cells).

4. **Differentiate between plant and animal cells:** While both plant and animal cells have a protoplast, plant cells also have a cell wall, which is not included in the definition of protoplast.

5. **Summarize the definition:** Therefore, the protoplast is defined as the entirety of the cell's contents (excluding the cell wall), which includes the cell membrane and all organelles within the cytoplasm.

### Final Answer:
The term "protoplast" was coined by Hans Deen.

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