The first person who used structural likeness as basis of classification and made systematics as a scientific discipline was

Options

A. John Ray
B. Lamarck
C. Carl von Linnaeus
D. Theophrastus

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the first person who used structural likeness as a basis for classification and established systematics as a scientific discipline.

2. **Identifying the Options**: The options provided are:
- Option 1: John Ray
- Option 2: Lamarck
- Option 3: Carl von Linnaeus
- Option 4: Theophilus

3. **Analyzing Each Option**:
- **John Ray**: He is known for using structural similarities in organisms as a basis for classification and is credited with making systematics a scientific discipline.
- **Lamarck**: Although he contributed to evolutionary biology, he is not primarily known for establishing systematics.
- **Carl von Linnaeus**: He is famous for developing a system of naming organisms (binomial nomenclature) but did not establish systematics as a scientific discipline.
- **Theophilus**: There is no significant contribution to classification or systematics attributed to him.

4. **Conclusion**: Based on the analysis, John Ray is the correct answer. He was the first to use structural likeness in classification and established systematics as a scientific discipline.

5. **Final Answer**: The first person who used structural likeness as a basis of classification and made systematics a scientific discipline was **John Ray** (Option 1).

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