During pollen pistil interaction chemical components are released from 

Options

A. Only pollen
B. only pistil
C. Both pollen and pistil
D. The ovary

Answer

### Step-by-Step Solution:

1. **Understanding Pollen-Pistil Interaction**:
- Pollen-pistil interaction is a crucial process in the fertilization of flowering plants. It occurs when pollen grains land on the stigma of a pistil, which is the female reproductive part of the flower.

2. **Role of Stigma**:
- The stigma is the top part of the pistil that receives pollen grains. It plays a vital role in recognizing compatible pollen for successful fertilization.

3. **Chemical Components Released**:
- During this interaction, both the pollen grains and the stigma release specific chemical components. These chemicals facilitate communication between the two, allowing the stigma to determine if the pollen is from the same species.

4. **Recognition of Compatible Pollen**:
- If the pollen is from the same species as the stigma, the chemical signals promote pollen germination and the growth of the pollen tube. Conversely, if the pollen is from a different species, the stigma recognizes this and prevents the pollen tube from growing.

5. **Conclusion**:
- Therefore, during pollen-pistil interaction, chemical components are released from both the pollen grains and the pistil.

### Final Answer:
Chemical components are released from **both pollen and pistil** during pollen-pistil interaction.

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