Entry of pollen tube throuh the end opposite to micropyle is

Options

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

Answer

To solve the question regarding the entry of the pollen tube through the end opposite to the micropyle, we need to analyze the different terms related to pollen tube entry. Here’s a step-by-step breakdown:

### Step 1: Understand the Terms
- **Porogamy**: This is when the pollen tube enters the ovule through the micropyle, which is the opening of the ovule.
- **Chalazogamy**: This refers to the entry of the pollen tube through the chalazal end of the ovule, which is the end opposite to the micropyle.
- **Mesogamy**: In this case, the pollen tube enters through the integuments or the funiculus, which are parts of the ovule.
- **Syngamy**: This term refers to the fusion of gametes and is not directly related to the entry of the pollen tube.

### Step 2: Identify the Correct Option
Since the question specifically asks for the entry of the pollen tube through the end opposite to the micropyle, we need to identify which term corresponds to this description.

- The end opposite to the micropyle is the chalaza. Therefore, the correct term for the entry of the pollen tube through this end is **Chalazogamy**.

### Step 3: Conclusion
The correct answer to the question is **Chalazogamy** (Option B).

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