Mesogamy is

Options

A. Entry of the pollen tube in the ovule through micropyle
B. Entry of the pollen tube in the ovule through integuments
C. Entry of the pollen tube in the ovule through chalaza
D. Entry of the pollen tube in the stigma and style

Answer

**Step-by-Step Solution:**

1. **Understanding Mesogamy**: Mesogamy refers to a specific type of fertilization process in plants. It is characterized by the entry of the pollen tube into the ovule through the integument.

2. **Analyzing the Options**: The question provides four options regarding the entry of the pollen tube:
- Option 1: Entry of the pollen tube to the ovule to multiply.
- Option 2: Entry of the pollen tube in the ovule to integrate.
- Option 3: Entry of the pollen tube to the ovule to plot each element.
- Option 4: Entry of the pollen tube to the stigma and style.

3. **Identifying the Correct Option**:
- **Option 1** is incorrect because it does not accurately describe mesogamy.
- **Option 2** is correct as it describes the entry of the pollen tube into the ovule through the integument, which is the defining characteristic of mesogamy.
- **Option 3** is also incorrect as it does not pertain to the process of fertilization.
- **Option 4** is incorrect because it describes the entry of the pollen tube through the stigma and style, which is not related to mesogamy.

4. **Conclusion**: Based on the analysis, the correct answer is **Option 2**: Entry of the pollen tube in the ovule to integrate.