which of the following plants bear flowers with variation in the length of filaments of stamens?

Options

A. Salvia
B. Mustard
C. Lily
D. both (1) & (2)

Answer

To solve the question regarding which plants bear flowers with variation in the length of filaments of stamens, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Flowers**:
- Flowers have male reproductive organs called androsium, which consists of stamens. Each stamen has two parts: the anther and the filament.

2. **Identify the Key Terms**:
- The question specifically asks about the variation in the length of the filaments of stamens. This means we are looking for plants where the stamens have different lengths.

3. **Examine the Options**:
- The options provided are Salvia and Mustard. We need to analyze these two plants to see if they exhibit the variation in filament length.

4. **Analyze Salvia**:
- Salvia exhibits a condition known as "di-dynamous," which means it has four stamens where two are of different lengths compared to the other two. This confirms that Salvia has variation in the length of its stamens.

5. **Analyze Mustard**:
- Mustard shows a "tetradynamous" condition, which consists of six stamens where two are shorter than the other four. This also indicates that Mustard has variation in the length of its stamens.

6. **Conclusion**:
- Since both Salvia and Mustard exhibit variation in the length of the filaments of their stamens, the correct answer to the question is that both plants bear flowers with this characteristic.

7. **Final Answer**:
- Therefore, the answer is option 4: Both 1 (Salvia) and 2 (Mustard).