Which one of the following is not a category ?

Options

A. Phylum
B. Species
C. Class
D. Glumaceae

Explanation

To solve the question "Which one of the following is not a category?" we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify which of the given options is not a recognized taxonomic category.

2. **Review the Options**: The options provided are:
- Phylum
- Species
- Class
- Glimpsy

3. **Recall Taxonomic Hierarchy**: Taxonomic hierarchy is a system used to classify living organisms. The main categories in this hierarchy include:
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species

4. **Identify the Categories**:
- **Phylum**: This is a valid taxonomic category.
- **Species**: This is also a valid taxonomic category.
- **Class**: This is another valid taxonomic category.
- **Glimpsy**: This term does not correspond to any recognized taxonomic category.

5. **Conclusion**: Since "Glimpsy" is not a recognized category in the taxonomic hierarchy, it is the correct answer to the question.

### Final Answer:
The option that is not a category is **Glimpsy**.

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