The cells, those aggregate to form internal buds during asexual reproduction in sponges are :-

Options

A. Archaeocytes
B. Pinacocytes
C. Interstitial cells
D. Choanocytes

Answer

To solve the question about which cells aggregate to form internal buds during asexual reproduction in sponges, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks about the specific type of cells in sponges that aggregate to form internal buds during asexual reproduction.

2. **Identify the Types of Cells in Sponges**:
- **Archeocytes**: These are totipotent cells in sponges that can differentiate into various cell types.
- **Pinacocytes**: These are flat cells that cover the outer surface of the sponge.
- **Interstitial Cells**: These are found between other cells and can differentiate into various types.
- **Choanocytes**: These are collar cells that help in feeding and water circulation.

3. **Focus on Asexual Reproduction**: The question specifically mentions asexual reproduction. In sponges, asexual reproduction often involves the formation of internal buds, which are known as gemmules.

4. **Determine the Role of Each Cell Type**:
- **Archeocytes** are known for their ability to aggregate and differentiate into other cell types, including those needed to form internal buds.
- **Pinacocytes** and **Choanocytes** do not play a direct role in forming internal buds.
- **Interstitial Cells** can differentiate but are not primarily responsible for forming internal buds.

5. **Conclude with the Correct Answer**: Based on the understanding that archeocytes are totipotent and can aggregate to form internal buds, the correct answer is **Archeocytes**.

### Final Answer:
The cells that aggregate to form internal buds during asexual reproduction in sponges are **Archeocytes**.

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