Pollen compatability is recognized by

Options

A. Ovary
B. style
C. stigma
D. Ovule

Answer

**Step-by-Step Solution:**

1. **Understanding Pollen Compatibility**: Pollen compatibility refers to the ability of pollen grains to successfully germinate and fertilize the ovule. This process involves specific interactions between the pollen (male gametophyte) and the pistil (female reproductive organ).

2. **Identifying the Parts of the Flower**: The main parts of the flower involved in recognizing pollen compatibility are the stigma, style, and ovary. The stigma is the part of the pistil where pollen grains land.

3. **Role of the Stigma**: The stigma plays a crucial role in recognizing whether the pollen is compatible or incompatible. When compatible pollen lands on the stigma, it promotes germination and subsequent fertilization. In contrast, if incompatible pollen lands on the stigma, the pistil will reject it, preventing pollen germination.

4. **Conclusion**: Based on the functions of the flower parts, the stigma is the part that recognizes pollen compatibility. Therefore, the correct answer to the question is that pollen compatibility is recognized by the stigma.

**Final Answer**: Pollen compatibility is recognized by the stigma.

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