The Fertilization involving the carrying of male gametes by the pollen tube is called

Options

A. Porogamy
B. Siphonogamy
C. Chalazogamy
D. Syngonogamy

Answer

To solve the question regarding the type of fertilization that involves the carrying of male gametes by the pollen tube, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the specific term used to describe the fertilization process where male gametes are transported by the pollen tube.

2. **Identify Key Terms**: The key terms in the question are "fertilization," "male gametes," and "pollen tube."

3. **Recall Definitions**:
- **Porogamy**: This is when the pollen tube enters the ovule through the micropyle.
- **Siphonogamy**: This refers to the process where the pollen tube carries male gametes to the egg cell.
- **Chalazogamy**: This is when the pollen tube enters through the chalaza.
- **Cynogamy**: This term is not commonly used in the context of plant fertilization.

4. **Analyze Each Option**:
- **Porogamy**: Incorrect, as it describes the entry point of the pollen tube.
- **Siphonogamy**: Correct, as it describes the process where the pollen tube carries male gametes to the egg.
- **Chalazogamy**: Incorrect, as it describes a different entry point.
- **Cynogamy**: Not applicable in this context.

5. **Conclusion**: The correct answer is **Siphonogamy**, as it specifically involves the transportation of male gametes by the pollen tube to the egg.

### Final Answer:
The fertilization involving the carrying of male gametes by the pollen tube is called **Siphonogamy**.

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