The term parthenogenesis was introduced by

Options

A. Charles Bonnet
B. Karl von Baer
C. Spallanzani
D. None of the above.

Answer

**Step-by-Step Solution:**

1. **Understanding the Term**: The term "parthenogenesis" refers to a form of asexual reproduction where an embryo develops from an unfertilized egg. This means that there is no fertilization involving male and female gametes.

2. **Identifying the Scientist**: The question asks about the introduction of the term "parthenogenesis." To answer this, we need to identify which scientist was responsible for coining this term.

3. **Reviewing the Options**: The options provided are:
- A. Charles Bonnet
- B. Carl von Beer
- C. Spallanzani
- D. None of the above

4. **Researching Historical Context**: Charles Bonnet, a Swiss naturalist, is known for his studies on reproduction in certain organisms, particularly aphids. He conducted experiments where he kept female aphids unfertilized and observed the development of embryos from these unfertilized eggs.

5. **Conclusion**: Based on the historical context and the studies conducted by Charles Bonnet, it is clear that he was the first to introduce the term "parthenogenesis."

6. **Final Answer**: Therefore, the correct answer to the question is option A, Charles Bonnet.

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