In the case of animals related classes are included in

Options

A. Order
B. Division
C. Phylum
D. Sub-division

Answer

To answer the question "In the case of animals, related classes are included in...", we can follow these steps:

### Step-by-Step Solution:

1. **Understand Taxonomic Hierarchy**:
- Taxonomy is the science of classification of living organisms. It follows a hierarchical structure.

2. **Identify the Levels of Classification**:
- The main levels of classification in the hierarchy are:
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species

3. **Focus on Classes**:
- The question specifically asks about "related classes." In taxonomy, classes are grouped under a higher category.

4. **Determine the Higher Taxonomic Level**:
- Classes are included within a phylum. Therefore, if we have multiple classes that are related (for example, Mammalia and Aves), they would belong to the same phylum.

5. **Conclusion**:
- Based on the taxonomic hierarchy, the answer to the question is that related classes in animals are included in the **phylum**.

### Final Answer:
In the case of animals, related classes are included in the **phylum**.

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