To determine which of the given options represents zygomorphic symmetry, we need to understand what zygomorphic symmetry is and identify the plants that exhibit this type of symmetry.
### Step-by-Step Solution:
1. **Understanding Zygomorphic Symmetry**:
- Zygomorphic symmetry, also known as bilateral symmetry, means that the flower can be divided into two identical halves by only one plane. This is different from actinomorphic symmetry, where the flower can be divided into two identical halves by multiple planes.
2. **Analyzing the Options**:
- **Option A**: Kana, Mustard, Chilli, Dathura
- **Option B**: Mustard, Kana
- **Option C**: Pea, Bean, Cassia, Gulmohar
- **Option D**: Pea, Bean, Kana
3. **Identifying Plants with Zygomorphic Symmetry**:
- The family Fabaceae (Leguminosae), which includes plants like Pea (Pisum sativum), Bean (Phaseolus), and Cassia, is known for having zygomorphic flowers.
- Gulmohar (Delonix regia) also exhibits zygomorphic symmetry.
- Mustard (Brassica) and Chilli (Capsicum) typically have actinomorphic symmetry.
- Kana (Canna) does not belong to the Fabaceae family and has actinomorphic symmetry.
4. **Evaluating Each Option**:
- **Option A**: Contains Mustard and Chilli, which do not have zygomorphic symmetry.
- **Option B**: Contains Mustard and Kana, which also do not have zygomorphic symmetry.
- **Option C**: Contains Pea, Bean, Cassia, and Gulmohar, all of which exhibit zygomorphic symmetry.
- **Option D**: Contains Pea and Bean, which are zygomorphic, but also includes Kana, which is not.
5. **Conclusion**:
- The option that contains only plants with zygomorphic symmetry is **Option C**: Pea, Bean, Cassia, and Gulmohar.
### Final Answer:
**Option C: Pea, Bean, Cassia, Gulmohar**
