Based on entry of pollen tube into ovule, which one is mesogamy

Options

A. Through micropyle
B. Through placenta and funiculus
C. Through integument
D. Entry through chalaza

Answer

To determine which option represents mesogamy based on the entry of the pollen tube into the ovule, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definitions**:
- **Mesogamy**: This refers to the entry of the pollen tube into the ovule through the integuments.
- **Orogamy**: Entry through the micropyle.
- **Chalazogamy**: Entry through the chalaza.
- **Other Options**: Entry through placenta and funiculus.

2. **Analyze the Options**:
- **Option 1: Through micropyle**: This corresponds to orogamy, not mesogamy.
- **Option 2: Through placenta and funiculus**: This does not correspond to mesogamy.
- **Option 3: Through integuments**: This is the definition of mesogamy.
- **Option 4: Through chalaza**: This corresponds to chalazogamy, not mesogamy.

3. **Identify the Correct Answer**:
- Based on the definitions and analysis, the correct answer is **through integuments**.

### Final Answer:
The correct option that represents mesogamy is **through integuments**.

---