The structures which guide the pollen tube into synergid is

Options

A. antipodals
B. germ pore
C. aril
D. filiform apparatus

Answer

To answer the question about the structures that guide the pollen tube into the synergid, we can break down the information as follows:

### Step-by-Step Solution:

1. **Understanding the Context**: The question asks about the structures involved in guiding the pollen tube into the synergid. The synergids are specialized cells located near the egg cell within the ovule of a flowering plant.

2. **Identifying Key Structures**: The pollen tube is formed from the pollen grain, which is produced in the anther (the male part of the flower). The pollen tube needs to navigate through the ovule to reach the egg cell for fertilization.

3. **Role of Synergids**: The synergids serve as guides for the pollen tube. They are positioned adjacent to the egg cell and play a crucial role in the fertilization process.

4. **Filiform Apparatus**: The specific structure that guides the pollen tube into the synergid is known as the **filiform apparatus**. This structure is formed by the synergid cells, which thicken and create a unique structure that helps in directing the pollen tube.

5. **Conclusion**: Therefore, the correct answer to the question is that the **filiform apparatus** is the structure that guides the pollen tube into the synergid.

### Final Answer:
The structures which guide the pollen tube into the synergid are the **filiform apparatus**.

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