Taxon is a unit of

Options

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

Answer

### Step-by-Step Solution:

1. **Understanding the Term "Taxon":**
- The term "taxon" is derived from the word "taxonomy," which is the science of classification of living organisms.

2. **Historical Context:**
- The term "taxon" was first used in 1926, indicating its established role in biological classification.

3. **Definition of Taxon:**
- A taxon is defined as a unit of classification. This means it represents a group of organisms that are classified together based on shared characteristics.

4. **Categories of Classification:**
- Living organisms are classified into seven hierarchical categories, which are:
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species

5. **Identifying Taxa:**
- Each of these categories (kingdom, phylum, class, order, family, genus, species) is considered a taxon. Therefore, taxon refers to any of these units of classification.

6. **Conclusion:**
- The correct answer to the question "Taxon is a unit of" is that it is a unit of classification.

### Final Answer:
Taxon is a unit of classification.