Pollen tube content is discharged in

Options

A. Central cell
B. Egg cell
C. Persistent synergid
D. Degenerated synergid

Answer

To answer the question "Pollen tube content is discharged in," we need to understand the process of fertilization in flowering plants. Here’s a step-by-step solution:

### Step-by-Step Solution:

1. **Understanding Pollen Tube Function**: The pollen tube is a structure that forms after a pollen grain lands on the stigma of a flower. It grows down the style towards the ovule, carrying male gametes (sperm cells).

2. **Content of the Pollen Tube**: The pollen tube contains two male gametes. These gametes are crucial for the fertilization process.

3. **Discharge of Pollen Tube Content**: When the pollen tube reaches the ovule, it penetrates the micropyle (an opening in the ovule) and discharges its contents.

4. **Target of Discharge**: The contents of the pollen tube, which include the two male gametes, are discharged into the synergids, which are specialized cells located near the egg cell within the ovule.

5. **Fate of the Male Gametes**:
- One of the male gametes fuses with the egg cell to form the zygote, a process known as syngamy.
- The second male gamete fuses with the central cell (which contains two polar nuclei) to form the triploid endosperm, a process known as triple fusion.

6. **Identifying the Correct Answer**: The question asks where the pollen tube content is discharged. Since the two male gametes are discharged into the synergids, and specifically into the degenerated synergids after they have served their purpose, the correct answer is **degenerated synergids**.

### Final Answer:
The pollen tube content is discharged in **degenerated synergids**.

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