The scientific name of black mustard is

Options

A. Brassica nigra
B. Brassica juncea
C. Brassica napus
D. Brassica campastris

Answer

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

### Step-by-Step Solution:

1. **Identify the Plant**: The question asks for the scientific name of black mustard. Black mustard is a type of mustard plant known for its seeds and is commonly used in cooking and oil production.

2. **Understand the Options**: The options provided are:
- a) Brassica nigra
- b) Brassica juncea
- c) Brassica napus
- d) Brassica campestris

3. **Recall the Scientific Classification**: The genus for mustard plants is "Brassica." Different species within this genus have distinct scientific names.

4. **Match the Correct Species**:
- Brassica nigra is known as black mustard.
- Brassica juncea is known as brown mustard.
- Brassica napus is known as rapeseed or canola.
- Brassica campestris is known as field mustard.

5. **Select the Correct Answer**: Based on the information, the scientific name of black mustard is **Brassica nigra**.

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

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