Mustard contains

Options

A. Alternate phyllotaxy and actinomorphic flower
B. Opposite phyllotaxy and zygomorphic flower
C. Whorled phyllotaxy and actinomorphic flower
D. Opposite phyllotaxy and actinomorphic flower

Answer

To determine what mustard contains in terms of phyllotaxy and flower symmetry, we can analyze the characteristics of mustard plants step by step.

### Step-by-Step Solution:

1. **Understanding Phyllotaxy**:
- Phyllotaxy refers to the arrangement of leaves on a stem. There are three main types of phyllotaxy:
- **Alternate**: Leaves are arranged at different heights on the stem, with one leaf per node.
- **Opposite**: Two leaves arise at the same level from opposite sides of the stem at each node.
- **Whorled**: More than two leaves grow from a single node, encircling the stem.

2. **Identifying Mustard's Phyllotaxy**:
- Mustard plants exhibit **alternate phyllotaxy**, meaning that the leaves are arranged alternately along the stem, with one leaf emerging from each node.

3. **Understanding Flower Symmetry**:
- Flower symmetry can be categorized into three types:
- **Actinomorphic**: Flowers that can be divided into two equal halves in multiple planes (radial symmetry).
- **Zygomorphic**: Flowers that can only be divided into two equal halves by one vertical plane (bilateral symmetry).
- **Asymmetric**: Flowers that cannot be divided into equal halves at all.

4. **Identifying Mustard's Flower Symmetry**:
- Mustard flowers are classified as **actinomorphic**, meaning they can be divided into two equal halves through multiple planes.

5. **Conclusion**:
- Based on the analysis, mustard contains **alternate phyllotaxy** and **actinomorphic flowers**. Therefore, the correct answer is:
- **Option 1: Alternate phyllotaxy and actinomorphic flower**.