All the taxonomic categories used in classification of organism constitute

Options

A. Taxonomy
B. Systematics
C. Taxonomic hierarchy
D. Taxonomic affinity

Answer

**Step-by-Step Solution:**

1. **Understanding Taxonomic Categories**: Taxonomic categories are the different levels or ranks used in the classification of organisms. These categories help in organizing and categorizing the vast diversity of life forms based on shared characteristics.

2. **Identifying Major Taxonomic Ranks**: The major taxonomic ranks in the hierarchy include:
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species

3. **Defining Taxonomic Hierarchy**: The arrangement of these categories from the broadest (kingdom) to the most specific (species) is known as the taxonomic hierarchy. This hierarchy reflects the evolutionary relationships among organisms.

4. **Understanding Taxa**: Each category or rank in the taxonomic hierarchy is referred to as a 'taxon' (plural: taxa). For example, 'Phylum' is a taxon that groups organisms based on certain shared characteristics.

5. **Role of Systematics**: Systematics is the scientific study of the diversity of organisms and their relationships. It involves the classification of organisms and the determination of their evolutionary relationships.

6. **Conclusion**: All the taxonomic categories used in the classification of organisms constitute a taxonomic hierarchy, which organizes living organisms into various ranks based on their similarities and differences.

**Final Answer**: All the taxonomic categories used in the classification of organisms constitute a taxonomic hierarchy.

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