Select out the incorrect pair

Options

A. Brassica, Datura - Radial symmet
B. Cassia, Dolichos - Zygomorphic
C. Pea, gulmohur - Bilateral symmetry
D. Chilli, Cassia - Actinomorphic

Answer

To solve the question of selecting the incorrect pair related to the morphology of flowering plants, we will follow these steps:

### Step-by-Step Solution:

1. **Understand Flower Symmetry Types**:
- There are three main types of flower symmetry:
- **Actinomorphic (Radial Symmetry)**: Flowers can be divided into equal halves in multiple planes.
- **Zygomorphic (Bilateral Symmetry)**: Flowers can be divided into equal halves in only one plane.
- **Asymmetric**: Flowers cannot be divided into equal halves at all.

2. **Identify Examples of Each Symmetry**:
- **Actinomorphic Examples**: Mustard (Brassica) and Potato (Solanaceae).
- **Zygomorphic Examples**: Peas, Gulmohar, Bean, and Cassia.

3. **Match the Given Options**:
- Check each option against the known examples of flower symmetry.
- For example:
- Option A: Brassica (Actinomorphic) - Correct
- Option B: Datura (Actinomorphic) - Correct
- Option C: Cassia (Zygomorphic) - Correct
- Option D: Chili (Actinomorphic) and Cassia (Zygomorphic) - Incorrect pairing since Cassia is incorrectly labeled as Actinomorphic.

4. **Identify the Incorrect Pair**:
- From the analysis, Option D is incorrect because it misclassifies Cassia as an Actinomorphic flower when it is actually Zygomorphic.

5. **Conclusion**:
- The incorrect pair is Option D, where Cassia is wrongly classified.

### Final Answer:
The incorrect pair is Option D.