Internationaly code of 'Biological Nomenclature' is applicable to

Options

A. Viruses
B. Plants
C. Animals
D. Both B and C

Answer

### Step-by-Step Solution:

1. **Understanding Biological Nomenclature**: Biological nomenclature is the system of naming living organisms. It ensures that each organism has a unique name that is recognized globally.

2. **Scope of Biological Nomenclature**: The code of biological nomenclature applies specifically to living organisms, which include both plants and animals.

3. **Binomial Nomenclature**: This system was developed by the scientist Carolus Linnaeus, who introduced the idea of giving each species a two-part name (genus and species). This is known as binomial nomenclature.

4. **Evaluating the Options**: The question provides several options for what the international code of biological nomenclature applies to:
- A. Viruses
- B. Plants
- C. Animals
- D. Both B and C

5. **Analyzing Each Option**:
- **Option A (Viruses)**: Viruses are considered non-living entities when outside a host. Therefore, they do not fall under the biological nomenclature.
- **Option B (Plants)**: Plants are living organisms and are included in biological nomenclature.
- **Option C (Animals)**: Animals are also living organisms and are included in biological nomenclature.
- **Option D (Both B and C)**: Since both plants and animals are living organisms, this option is correct.

6. **Conclusion**: The international code of biological nomenclature is applicable to both plants and animals, making the correct answer option D (Both B and C).

### Final Answer:
The internationally code of biological nomenclature is applicable to **both plants and animals** (Option D).

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