Protoplasm was first observed by

Options

A. Dujardin
B. Purkinje
C. Von Mohl
D. Corti

Answer

**Step-by-Step Solution:**

1. **Identify the Question:** The question asks who first observed protoplasm.

2. **Review Historical Context:** Protoplasm was first observed in the context of biological studies. Understanding the contributions of various scientists in this area is crucial.

3. **Consider the Options:**
- A. Dujardin
- B. Purkinje
- C. Von Maul
- D. Cote

4. **Research Dujardin's Contribution:** Research indicates that A. Dujardin, a biologist and psychologist, is credited with the first observation of protoplasm in 1835. He referred to it as "Sarkhod."

5. **Research Purkinje's Contribution:** In 1839, B. Purkinje later coined the term "protoplasm" to describe the substance observed by Dujardin.

6. **Conclusion:** Based on the historical contributions, the correct answer to the question is A. Dujardin, as he was the first to observe protoplasm.

**Final Answer:** The first observation of protoplasm was made by A. Dujardin.

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