Question

Which one of the following guides the entry of the pollen tube into the embryo sac?

• A. Antipodal Cells
• B. Filiform apparatus
• C. Micropyle
• D. Synergids

Hint:

The micropyle is essential for fertilization, as it serves as the entry point for the pollen tube.

Answer 1

The Correct Option is C

Step 1: Understand the role of the micropyle.
The micropyle is the small opening in the ovule where the pollen tube enters. It is the site through which the sperm cells travel to fertilize the egg cell in the embryo sac.
Step 2: Role of other components.
- Antipodal Cells: These are the cells located at the opposite end of the embryo sac and do not guide the pollen tube entry.
- Filiform apparatus: Found in synergid cells, it helps in guiding the pollen tube into the ovule but not directly related to the entry.
- Synergids: These cells help attract the pollen tube but don’t guide the entry. They play a significant role in fertilization once the pollen tube enters.
Step 3: Conclusion.
The micropyle directly guides the entry of the pollen tube into the embryo sac.
Final Answer: \[ \boxed{\text{The correct answer is Micropyle.}} \]