Select the options in which the genus is correctly matched with all the characters found in it

Options

A. Cassia - zygomorphic flowers, imbricate aestivation, cyınose inflorescence
B. Pea- Nodular roots, zygomorphic flower, legume fruit
C. Sunflower - Head, basal placentation, caryopsis fruit
D. Cucumber - Pome, parietal placentation, Epigynous flower

Answer

To solve the question of selecting the option in which the genus is correctly matched with all the characters found in it, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Examine the First Option: Acacia**
- **Family**: Fabaceae
- **Characters**:
- Zygomorphic flowers: Correct (flowers are bilaterally symmetrical).
- Imbricate Estivation: Correct (petals/sepals arranged in an overlapping manner).
- Cymose inflorescence: Incorrect (Acacia has Racemose inflorescence, not Cymose).
- **Conclusion**: Acacia does not match all characters correctly.

2. **Examine the Second Option: Pea (Pisum)**
- **Family**: Fabaceae
- **Characters**:
- Zygomorphic flowers: Correct.
- Nodular roots: Correct (nodules for nitrogen fixation).
- Legume fruit: Correct (typical of leguminous plants).
- **Conclusion**: All characters match correctly for Pea.

3. **Examine the Third Option: Sunflower**
- **Family**: Asteraceae
- **Characters**:
- Head inflorescence: Correct.
- Basal placentation: Correct (ovary located at the base).
- Caryopsis fruit: Incorrect (Sunflower produces achenes, not caryopsis).
- **Conclusion**: Sunflower does not match all characters correctly.

4. **Examine the Fourth Option: Cucumber**
- **Family**: Cucurbitaceae
- **Characters**:
- Pom fruit: Incorrect (Cucumber is a berry, not a pom).
- Parietal placentation: Correct.
- Epigynous flower: Correct (ovary is situated below the petals).
- **Conclusion**: Cucumber does not match all characters correctly.

### Final Answer:
The correct option in which the genus is matched with all the characters found in it is **Pea (Pisum)**.

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