Protists

=** Protists **=



Basic:
Protists are e ukaryotic microorganisms that are either unicellular or multicellular. What makes them different from other organisms is that they have no specialized tissue. They live in watery environments and are mainly photosynthetic. They are also responsible for human disease like malaria and sleeping disease .

Reproduction:
Protozoa: Mostly single-celled and mobile. Eat by phagocytosis. .01-.5mm in size Flagellates- move by flagella Amoeboids- pseudopodia Ciliates- cilia Sporozoa- non-mobile parasites; spores Algae: Many are single-celled that are also protozoa, which have gotten chloroplasts through enosymbiosis. Many are non-mobile multi-cellular Chlorophytes- green algae, related to higher plants Rhodophytes- red algae Heterokontophytes- brown algae, diatoms Metabolism: Many feed on bacteria. Extend cell walls and cell membrane to envelope food into a food vacuole. Phototrophs: sunlight Organotrophs: organic compoundsReproduction: both sexual and asexually.