Kingdom: Protists

Each amoeba has a minimal amount of cytoplasm that is divided into a thin outer plasma membrane, a layer of stiff, translucent ectoplasm just within the plasma membrane, and a centre granular endoplasm. Amoeba are eukaryotic organisms that are discovered in stagnant water.

Euglena is a single-nucleated, unicellular organism, The elongated cell of Euglena is 15–500 micrometres long. Because chlorophyll pigment is present, the colour is green. There are freshwater and saltwater Euglena species.

Eyes, hearts, brains, and hearing are absent in paramecia. Paramecia can reproduce and digest even without the systems of many other creatures. They are single-celled protists that live in aquatic environments. They have cilia, which are little hairy structures, covering them.

The alga Spirogyra, which is found in saline water settings and is a member of the Plantae kingdom, has a sophisticated cellular structure. The filamentous algae known as spirogyras are composed of long, slender chains of cylindrical cells.