Standardisation of scientific name for plants is done by

Options

A. ICBN
B. ICNB
C. ICNCP
D. Both (1) & (3)

Answer

To answer the question regarding the standardization of scientific names for plants, we need to analyze the options provided and understand the relevant codes.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the standardization of scientific names for plants, which is a fundamental aspect of botanical nomenclature.

2. **Identifying the Options**:
- Option 1: ICBN (International Code of Botanical Nomenclature)
- Option 2: ICNB (International Code of Nomenclature for Botanical)
- Option 3: ICNCP (International Code of Nomenclature for Cultivated Plants)
- Option 4: Both 1st and 3rd

3. **Evaluating Option 1 (ICBN)**:
- ICBN stands for the International Code of Botanical Nomenclature, which is indeed the correct code for the naming of plants. Thus, this option is valid.

4. **Evaluating Option 2 (ICNB)**:
- ICNB is not a recognized code in botanical nomenclature. Therefore, this option is incorrect.

5. **Evaluating Option 3 (ICNCP)**:
- ICNCP stands for the International Code of Nomenclature for Cultivated Plants. This code is also relevant for the standardization of names, particularly for cultivated species. Hence, this option is valid as well.

6. **Evaluating Option 4 (Both 1st and 3rd)**:
- Since both ICBN and ICNCP are valid codes for standardizing scientific names for plants, option 4, which states both 1st and 3rd, is the correct answer.

### Final Answer:
The standardization of scientific names for plants is done by both ICBN (International Code of Botanical Nomenclature) and ICNCP (International Code of Nomenclature for Cultivated Plants). Therefore, the correct answer is option 4: Both 1st and 3rd.

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