Taxon is a unit of

Options

A. Species
B. Order
C. Genus
D. Taxonomy

Answer

To answer the question "Taxon is a unit of," we will analyze the options provided and understand the concept of a taxon in the context of biological classification.

### Step-by-Step Solution:

1. **Understanding the Term "Taxon":**
- The term "taxon" refers to any group or category in the biological classification system. It can represent various levels of organization in the taxonomic hierarchy.

2. **Taxonomic Hierarchy:**
- The taxonomic hierarchy includes several ranks such as:
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species
- Each of these ranks is considered a taxon.

3. **Categories of Taxa:**
- Taxa can be further divided into intermediate categories, such as:
- Subkingdom
- Subdivision
- Superclass
- Subgenus
- Subspecies
- This shows that a taxon can represent any level of grouping within the hierarchy.

4. **Analyzing the Options:**
- **Option 1: Species** - This is a specific taxon within the hierarchy.
- **Option 2: Order** - This is also a specific taxon within the hierarchy.
- **Option 3: Genus** - This is another specific taxon within the hierarchy.
- **Option 4: Taxonomy** - This refers to the science of classification itself, which encompasses all taxa.

5. **Conclusion:**
- Since a taxon is a unit of classification that can refer to any level within the taxonomic hierarchy, the correct answer is **Option 4: Taxonomy**.

### Final Answer:
Taxon is a unit of **Taxonomy**.