There may be variation in the length of filaments within a flower as in

Options

A. Mustard and pea
B. Salvia and mustard
C. Pea and lily
D. Brinjal and Salvia

Answer

To answer the question regarding the variation in the length of filaments within a flower, we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of a Flower**:
- A flower consists of various parts, and one of the key components is the stamen, which is responsible for producing pollen. The stamen is made up of two parts: the filament and the anther.

2. **Define the Filament**:
- The filament is the slender stalk that supports the anther. Its length can vary significantly among different species of plants.

3. **Recognize Variation in Filament Length**:
- It is important to note that the length of filaments is not uniform across all plants. Different species exhibit different filament lengths, and even within a single species, there can be variations.

4. **Identify Examples of Plants with Filament Variation**:
- The question specifically asks for examples where filament length varies. Two notable examples are:
- **Salvia**: This plant has four stamens that are disposed in pairs of unequal lengths.
- **Mustard**: In mustard plants, there are six stamens, with two of them being shorter than the others.

5. **Conclusion**:
- Based on the examples discussed, the correct answer to the question is that there may be variation in the length of filaments within flowers such as in **Salvia and Mustard**.

### Final Answer:
The variation in the length of filaments within a flower can be observed in **Salvia and Mustard**.

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