Microorganisms & Protozoa

Bacteria and archaea are single cell prokaryote. They are similar in sizes, shapes, reproduction, and habitats. They differs in cell wall and membrane compositions.

Tardigrades, also known as water bears, look like chubby, microscopic bears walking slowly with eight short legs. The tardigrade is a famous extremophile that can survive in hot springs, deep ocean, under solid layers of ice, and even after exposure to deadly irradiation.

Synura is a small group of golden-brown algae found mostly in freshwater. They are covered in silicate scales and tends to aggregate and assemble into a cluster.

Daphnias, also called water fleas, are small planktonic crustaceans. Its body is usually 0.2–6.0 mm long and enclosed in a transparent shell.

Archaea are single cell organisms without a nucleus and other membrane-bounded organelles. Archaea are not closely related to the bacteria but are more closely related to the eukaryotes.

Bacteria are single-celled microorganisms. Because they don’t have nuclei or membrane-bound organelles, they are classified as “prokaryotic cells”.

A fragment of planarian can regrow into a new animal in two weeks. Genes such as notum and wnt1, instruct the planarian where to grow a head and a tail.

Planarians are a group of free-living flatworms. They have a remarkable ability to regenerate an entire worm from just a tiny fragment of the original.

Hydras are classified under the phylum Cnidaria; some of its relatives are jellyfish and sea anemones. A hydra has many tentacles around the mouth opening.