Antonym is valid in

Options

A. Option1  Only in botanical nomenclature
B. Option2 Only in zoological nomenclature
C. Option3 Both in botanical & zoological nomenclature
D. Option4 Only in bacteriological nomenclature

Answer

**Step-by-step Solution:**

1. **Understanding the Term "Antonym":**
- An antonym is a word that has the opposite meaning of another word. In the context of biological terminology, it refers to terms that are used to denote different entities or classifications.

2. **Context of Antonyms in Biology:**
- In biology, particularly in the field of taxonomy, antonyms can be relevant when discussing the naming and classification of organisms.

3. **Botanical Nomenclature:**
- The term "antonym" is specifically valid in the context of botanical nomenclature. This is a system used to name and classify plants, algae, and fungi.

4. **International Code of Nomenclature:**
- The names in botanical nomenclature are regulated by the International Code of Nomenclature for algae, fungi, and plants (ICN). This ensures that the naming is standardized and universally accepted.

5. **Application to Genera and Species:**
- Antonyms in this context can refer to the naming of different genera and species within the botanical classification system. For example, the genus "Rosa" (roses) and "Rubus" (blackberries) can be considered antonyms in terms of their classification.

6. **Conclusion:**
- Therefore, the correct answer to the question "Antonym is valid in" is that it is valid in the context of botanical nomenclature, specifically in the binomial system of naming organisms.

**Final Answer:**
Antonym is valid in the context of botanical nomenclature.

---