A staminode does not contain

Answer

### Step-by-Step Solution:

1. **Understanding Staminode**:
- A staminode is defined as a sterile stamen, which means it does not produce pollen grains. It is part of the flower's reproductive structure but does not contribute to reproduction in the same way that a functional stamen does.

2. **Identifying the Components of a Stamen**:
- A stamen typically consists of two main parts: the anther and the filament. The anther is where pollen grains are produced, and the filament supports the anther.

3. **Analyzing the Options**:
- **Option A: Anther Filament**: This is a part of the stamen. Although staminodes do not produce pollen, they may still have a filament structure. Therefore, this option is incorrect as staminodes can contain an anther filament.

- **Option B: Male Gametes**: Male gametes are found within pollen grains. Since staminodes do not produce pollen grains, they also do not contain male gametes. This option is correct in stating that staminodes do not contain male gametes.

- **Option C: Pollen Grains**: Pollen grains are the male gametophytes produced by the anther of a functional stamen. Since staminodes are sterile and do not produce pollen, they do not contain pollen grains. This option is also correct.

4. **Conclusion**:
- The question asks what a staminode does not contain. The correct answer is that a staminode does not contain **pollen grains** (Option C), as they are sterile and do not produce any male gametes.

### Final Answer:
A staminode does not contain **pollen grains**.

---