System of classification proposed by two botanists and claimed to be natural system is by

Options

A. Bentham and Hooker
B. Aristotle and Theophrastus
C. Darwin and Wallace
D. Engler and Prantl.

Answer

To solve the question regarding the system of classification proposed by two botanists that is claimed to be a natural system, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the names of two botanists who proposed a natural system of classification for plants.

2. **Identify the Options**: The options provided are:
- A. Bentham and Hooker
- B. Aristotle and Theoprast
- C. Darwin and Wallace
- D. Engler and Pratt

3. **Evaluate Each Option**:
- **Option A: Bentham and Hooker**: They are known for their work in plant classification and proposed a natural system of classification known as "Genera Plantarum". This system is based on the natural relationships among plants.
- **Option B: Aristotle and Theoprast**: While they made significant contributions to biology, their work was not specifically a natural system of classification as understood in modern botany.
- **Option C: Darwin and Wallace**: They are primarily known for their contributions to the theory of evolution and natural selection, not plant classification.
- **Option D: Engler and Pratt**: They contributed to plant classification but did not propose a natural system as defined by Bentham and Hooker.

4. **Conclusion**: Based on the evaluation, the correct answer is **Option A: Bentham and Hooker**, as they proposed the natural system of classification.

### Final Answer:
The system of classification proposed by two botanists and claimed to be a natural system is by **Bentham and Hooker**.

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