Which of the following is incorrect pairing of plant and the characteristic ?

Options

A. Variation in the length of filaments within a flower : Salvia
B. Polycarpellary syncarpous gynoecium : Tomato
C. Ovary is one - charmbered but it becomes two chambered due to formation of a false septum : Argemone
D. The gynoecium occupies the highest position while the other parts are situated below it : Guava

Answer

To solve the question regarding the incorrect pairing of a plant and its characteristic, we will analyze each option provided.

### Step-by-Step Solution:

1. **Identify the first option**:
- **Pair**: Variation in the length of filaments within a flower (Salvia).
- **Analysis**: In Salvia, there is indeed variation in filament length, which is a characteristic of the plant.
- **Conclusion**: This is a correct pairing.

2. **Identify the second option**:
- **Pair**: Polycarpillary syncarpus gynoecium (Tomato).
- **Analysis**: The tomato plant has a polycarpillary syncarpus gynoecium, meaning it has multiple carpels that are fused together.
- **Conclusion**: This is a correct pairing.

3. **Identify the third option**:
- **Pair**: Ovary is one chambered but becomes two chambered due to the formation of a false septum (Agrimonia or Mustard).
- **Analysis**: In plants like Agrimonia and Mustard, the ovary starts as one chambered and can develop a false septum (replum) that divides it into two chambers.
- **Conclusion**: This is a correct pairing.

4. **Identify the fourth option**:
- **Pair**: Gynoecium occupies the highest position while the other parts are situated below it (Guava).
- **Analysis**: This characteristic is actually seen in plants like China rose and brinjal, not in Guava. In Guava, the gynoecium does not occupy the highest position.
- **Conclusion**: This is an incorrect pairing.

### Final Conclusion:
The incorrect pairing of plant and characteristic is the last option regarding Guava. Therefore, the answer to the question is the last option.

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