The suffix – inae signifies the rank :–

Options

A. Tribe
B. Subtribe
C. Suborder
D. Sub family

Answer

### Step-by-Step Solution:

1. **Understanding Taxonomy**: Taxonomy is the science of classification of living organisms. It involves organizing species into hierarchical categories based on shared characteristics.

2. **Identifying Taxonomic Ranks**: There are several taxonomic ranks in descending order: Kingdom, Division (or Phylum), Class, Order, Family, Genus, and Species.

3. **Recognizing the Suffixes**: Each taxonomic rank has a specific suffix that indicates its position in the hierarchy:
- Family: -aceae
- Tribe: -eae
- Sub-family: -inae
- Sub-order: -ineae
- Sub-tribe: -inae

4. **Focusing on the Suffix -inae**: The question specifically asks about the suffix "-inae". According to the taxonomic hierarchy, the suffix "-inae" is used for sub-families.

5. **Conclusion**: Therefore, the suffix "-inae" signifies the rank of sub-family.

### Final Answer:
The suffix –inae signifies the rank of sub-family.

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