What are obligate categories? How these difer from intermediate categories. Name some intermediate categories,

Explanation

### Step-by-Step Solution:

1. **Definition of Obligate Categories**:
- Obligate categories are classifications in biological taxonomy that follow a strict hierarchical structure. This means they are based on a defined taxonomical hierarchy which includes levels such as kingdom, phylum, class, order, family, genus, and species.

2. **Characteristics of Obligate Categories**:
- These categories are essential for organizing living organisms into a systematic framework. They provide a clear and standardized method for classifying and identifying species based on shared characteristics.

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