The scientific name of black mustard is

Options

A. Brassica campestris
B. B. rapa
C. B. Juncea
D. B. nigra

Answer

To find the scientific name of black mustard, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Plant**: We need to determine the scientific name of black mustard. Black mustard is a common plant known for its seeds which are used as a spice and in oil production.

2. **Understand Plant Taxonomy**: Scientific names are typically composed of two parts: the genus name and the species name. The genus name is always capitalized, while the species name is in lowercase.

3. **Review the Options**:
- **Option A**: Brassica Campestris - This is known as field mustard, not black mustard.
- **Option B**: Brassica Rapa - This is commonly known as turnip, not black mustard.
- **Option C**: Brassica Juncea - This is the scientific name for brown mustard, not black mustard.
- **Option D**: Brassica Nigra - This is the correct scientific name for black mustard.

4. **Select the Correct Answer**: After reviewing all the options, we find that the scientific name for black mustard is **Brassica Nigra**.

### Final Answer:
The scientific name of black mustard is **Brassica Nigra**.

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