Amongst all the kingdoms, the only taxon that exists in nature as a biologically units is the

Options

A. species
B. genus
C. phylum or division
D. kingdom.

Answer

**Step-by-Step Solution:**

1. **Understanding Taxonomic Hierarchy**: The question refers to the taxonomic hierarchy, which is a system used to classify living organisms into categories based on shared characteristics. The main ranks in this hierarchy include kingdom, phylum, class, order, family, genus, and species.

2. **Identifying the Taxon**: The question asks which taxon exists in nature as a biological unit. A taxon is a group of one or more populations of an organism or organisms that form a unit in the classification system.

3. **Evaluating the Options**:
- **Species**: This is the most specific level of classification and refers to a group of organisms that can interbreed and produce fertile offspring. It is often considered the basic unit of biological classification.
- **Genus**: This is a higher taxonomic rank that includes one or more species that are closely related.
- **Phylum**: This is a higher rank that groups together organisms that share a significant number of characteristics but is broader than species.
- **Division**: This term is often used interchangeably with phylum in the context of plant taxonomy.
- **Kingdom**: This is one of the highest taxonomic ranks and includes a large variety of organisms.

4. **Conclusion**: Among all the options, the species is the only taxon that exists in nature as a biological unit. It represents a group of organisms that share similar characteristics and can reproduce with one another, making it the most basic unit of classification.

5. **Final Answer**: Therefore, the correct answer is **species**.

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