Given that the cell is described as "round" and "incapable of producing its own food," we can deduce that it is likely not a plant cell, as plant cells typically contain chloroplasts for photosynthesis. Therefore, the presence of chloroplasts can be ruled out.
The other organelles listed are:
- Cell wall: Typically found in plant cells and some prokaryotes.
- Plasma membrane: Found in all cells, including animal and plant cells.
- Central vacuole: Common in plant cells for storage and maintaining turgor pressure.
Since the cell is round and unable to produce its own food (indicating it could be an animal cell), the most reasonable choice is the plasma membrane, as it is essential for all cells and allows for the regulation of materials entering and leaving the cell.
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