Describe the nutrition in amoeba and paramoecium

Amoeba can constantly change its shape. It forms finger-like projections called pseudopodia (meaning false feet). around its prey and engulfs it. The food thus eaten gets trapped in the food vacuole. An Amoeba feeds on algae, rotifiers, protozoans, and even other small Amoeba. Digestive juices are secreted inside the food vacuole in an Amoeba. Theses juices act on the food and break it down into smaller components. The digested food is later absorbed by the Amoeba for growth, maintenance, and multiplication. The waste material or undigested food is then expelled out of the body.

Paramecia uses its cilia to sweep its food along with some water into the cell mouth. The food then enters into the gullet, which is like the stomach. Then, the food invaginates to form a food vacuole in the cytoplasm, and travels through the cell, through the back end first. As it moves along, enzymes from the cytoplasm enter the vacuole to digest the contents, digested nutrients then going into the cytoplasm, and the vacuole shrinks. When the vacuole reaches the anal pore, it ruptures, expelling its waste contents to the exterior.

So, both Amoeba and Paramoecium have holozoic type of nutrition i.e. food is engulfed and then digested in the cell.