Which of the following is a category ?

Options

A. Order
B. Class
C. Genus
D. All of these

Answer

To solve the question "Which of the following is a category?", we can follow these steps:

### Step 1: Understand the Concept of Categorization
- Categorization in biology refers to the process of grouping organisms based on shared characteristics. This is essential for studying biological species.

### Step 2: Identify the Hierarchical Structure
- Biological classification is organized in a hierarchical structure. The main levels include:
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species

### Step 3: Analyze the Options
- The question provides options that include "order," "class," and "genus." We need to determine if these are categories within the biological classification system.

### Step 4: Confirm Each Option as a Category
- **Order**: This is a rank in the biological classification system, grouping together families that share certain characteristics.
- **Class**: This is a higher rank that groups together related orders.
- **Genus**: This is a rank that groups together species that are closely related.

### Step 5: Conclusion
- Since all three options (order, class, and genus) are indeed categories within the biological classification hierarchy, the correct answer is "All of these."

### Final Answer
- The correct option is **D. All of these**.

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