ICZN/ICBN does not apply to

Options

A. viruses
B. plants
C. animals
D. bacteria

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which group of organisms is not governed by the International Code of Zoological Nomenclature (ICZN) or the International Code of Botanical Nomenclature (ICBN).

2. **Defining ICZN**: The ICZN stands for the International Code of Zoological Nomenclature. It is a set of rules and recommendations for naming animals scientifically. This code is specifically designed for the classification and naming of animal species.

3. **Defining ICBN**: The ICBN stands for the International Code of Botanical Nomenclature. It provides guidelines for naming plants, fungi, and some other organisms. This code is focused on the classification and naming of botanical species.

4. **Identifying the Scope of ICZN and ICBN**: Both ICZN and ICBN cover a wide range of organisms. ICZN applies to animals, while ICBN applies to plants and fungi. Importantly, both codes also apply to bacteria.

5. **Determining the Exclusion**: The key point from the definitions and scopes of ICZN and ICBN is that neither of these codes applies to viruses. Viruses are not classified as animals or plants and do not fall under the jurisdiction of either nomenclature code.

6. **Conclusion**: Therefore, the correct answer to the question is that ICZN and ICBN do not apply to **viruses**.

**Final Answer**: Viruses (Option A)

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