What animals form food in a pouch called vacuole?

The term "vacuole" refers to a membrane-bound organelle found in all eukaryotic cells, not just animals. It's a storage compartment for water, nutrients, and waste products.

However, the process of forming food within a pouch is more commonly associated with single-celled organisms, specifically protists like amoebas, which use a process called phagocytosis.

Here's how it works:

1. Engulfing: The amoeba surrounds a food particle with its cell membrane.

2. Pouch Formation: The membrane pinches off, creating a pouch called a food vacuole.

3. Digestion: Enzymes break down the food within the food vacuole.

4. Absorption: Nutrients are absorbed into the amoeba's cytoplasm.

5. Waste Removal: Undigested waste is expelled from the cell.

So, while animals have vacuoles, they don't use them to form food in the same way as protists do.