In majority of the flowering plants, entry of pollen tube in ovule is

Options

A. Porogamy
B. Chalazogamy
C. Mesogamy
D. Basogamy

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the method of entry of the pollen tube into the ovule in the majority of flowering plants. We need to identify the correct term from the options provided: Porogamy, Chalazogamy, Mesogamy, or Basogamy.

2. **Defining the Terms**:
- **Porogamy**: This is when the pollen tube enters the ovule through the micropyle. It is the most common method in angiosperms (flowering plants).
- **Chalazogamy**: In this method, the pollen tube enters through the chalazal end of the ovule.
- **Mesogamy**: Here, the pollen tube can enter through the integument or the funiculus.
- **Basogamy**: This term is less commonly used and does not typically apply to the entry of pollen tubes in flowering plants.

3. **Analyzing the Options**:
- **Porogamy** is the most prevalent method in angiosperms, where the pollen tube penetrates through the micropyle.
- **Chalazogamy** is not common in angiosperms as it involves entry through the chalazal end.
- **Mesogamy** is also less common and involves entry through other parts of the ovule.
- **Basogamy** is not a standard term used in this context.

4. **Conclusion**: Based on the definitions and prevalence of these methods, the correct answer is **Porogamy**.

### Final Answer:
**Porogamy**

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