Which book is the starting point for phylogenetic system :-

Options

A. Origin of species
B. Die Naturlichen Pflanzen familien
C. The phylogenetic taxonomy of flowering plants
D. Historia plantarum

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the book that serves as the starting point for the phylogenetic system of classification.

2. **Identifying the Options**: The options provided are:
- The Origin of Species
- Die Naturlichen
- Lens of Amylin
- The Phylogenetic Taxonomy of Flowering Plants
- Historia Plantarum

3. **Analyzing the Options**:
- **The Origin of Species**: Written by Charles Darwin, it discusses natural selection and evolutionary theory.
- **Die Naturlichen**: This title does not directly relate to phylogenetic classification.
- **Lens of Amylin**: This is not a recognized work related to phylogenetics.
- **The Phylogenetic Taxonomy of Flowering Plants**: This is a more modern work and not the starting point.
- **Historia Plantarum**: While significant in botany, it does not focus on phylogenetic classification.

4. **Connecting to Phylogenetic System**: Charles Darwin's "The Origin of Species," published in 1842, laid the groundwork for understanding evolution and natural selection, which are fundamental to the phylogenetic system.

5. **Conclusion**: Based on the analysis, the book that is the starting point for the phylogenetic system is **The Origin of Species**.

**Final Answer**: The Origin of Species

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