Which one of the following organisms is correctly matched with its three characteristics

Options

A. Pea : `C_(3)` pathways, Non endosp, Endospermic seed, Vexillary aestivation
B. Tomato : Twisted aestivation , Axile placentation , Berry
C. Onion: Bulb, Imbricate aestivatioin, Axile placentation
D. Maize: `C_(3)` pathway, Closed vascular bundles , Scutellum

Answer

To determine which organism is correctly matched with its three characteristics, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Organisms and Their Characteristics**:
- We have four options to evaluate. Each option includes an organism and three characteristics associated with it.

2. **Analyze Option 1**:
- **Organism**: Tomato
- **Characteristics**: C3 pathways, non-endospermic seed, vexillary arrangement.
- **Evaluation**:
- Tomatoes are indeed C3 plants.
- They have endospermic seeds, so this characteristic is incorrect.
- Vexillary arrangement is correct for tomato flowers.
- **Conclusion**: Not correctly matched.

3. **Analyze Option 2**:
- **Organism**: Onion
- **Characteristics**: Bulb, imbricate estivation, exile placentation.
- **Evaluation**:
- Onion is a bulb, which is a modified stem.
- Imbricate estivation is correct as the margins of sepals and petals overlap.
- Exile placentation is also correct as the ovary is sectioned by radial spokes.
- **Conclusion**: Correctly matched.

4. **Analyze Option 3**:
- **Organism**: Mase (likely a typo for maize)
- **Characteristics**: C3 pathway, closed vascular bundles, scutellum.
- **Evaluation**:
- Maize is a C4 plant, not C3, so this characteristic is incorrect.
- Closed vascular bundles are correct.
- Scutellum is a part of the seed, but the first characteristic disqualifies this option.
- **Conclusion**: Not correctly matched.

5. **Analyze Option 4**:
- **Organism**: Berry
- **Characteristics**: Twisted estivation, exile placentation, berry.
- **Evaluation**:
- The term "berry" refers to a type of fruit, not an organism.
- Twisted estivation and exile placentation need to be evaluated in context, but since "berry" is not an organism, this option is not valid.
- **Conclusion**: Not correctly matched.

### Final Answer:
The correct answer is **Option 2: Onion**, as it is correctly matched with its three characteristics.