Ch 2.1 : Protozoa Animal Like Presented by Mr.Mulligan, 7w Science

Protists Wide variety of organisms One celled or multi-celled. Can be plant like, animal like, fungus like. May or may not contain chlorophyll Eukaryotes (have a nucleus)

Protozoa 1 cell and contains organelles No chlorophyll 200-300 times bigger than bacteria but still microscopic If Bacteria was the size of your shoe, Protozoa would be the size of a football field!

Protozoa

Where do they live? Oceans, fresh water and damp soil In other organisms (parasites) They will feed on dead organisms, monerans or other protists.

What do they eat? Protozoa will feed on dead organisms, monerans or other protists.

4 Main Groups: Sarcodines Ciliates Flagellates Sporozoans How do you think they were classified into these 4 groups?

Sarcodines Pseudopods = “false foot” Moves by changing shape Traps food by making a vacuole around it For example: Amoeba

Ciliates Cilia = short, hairlike extensions Fastest moving protozoa Like bumper cars: speed, bump into something, reverse direction Cilia help sweep food into ‘oral groove’ For example: Paramecium

Flagellates Long, whiplike flagella (pl.), flagellum (sing.) Tend to be parasites in blood Some are good: help termite digest wood Some are bad: cause African sleeping disease For example: Euglena

Sporozoa Cannot move on their own Are all parasites Malaria attacks red blood cells, reproduce and burst out of cells to infect another For example: Malaria