Number of obligatory categories in taxonomy are :–

Options

A. 7
B. 8
C. 9
D. 5

Answer

To determine the number of obligatory categories in taxonomy, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Taxonomy**: Taxonomy is the science of classifying living organisms into groups based on shared characteristics. Each group is called a taxon.

2. **Taxonomic Ranks**: Taxonomic ranks are the levels in the hierarchy of classification. Each rank represents a category in which organisms are grouped.

3. **Identifying the Categories**: The essential or obligatory taxonomic categories (ranks) are:
- Kingdom
- Division (or Phylum in animals)
- Class
- Order
- Family
- Genus
- Species

4. **Counting the Categories**: By listing the categories mentioned above, we find that there are a total of 7 obligatory categories in taxonomy.

5. **Conclusion**: Therefore, the answer to the question is that there are 7 obligatory categories in taxonomy.

### Final Answer:
The number of obligatory categories in taxonomy is 7.

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