Protists The most diverse kingdom

Basic Characteristics all live in moist environments. are unicellular or multi-cellular

Why are Protists important? They: provide food and energy for pond food chains support the fish and animal life in and around the pond.

3 types of Protists 1) Animal-like 2) Plant- like 3) Fungus-like

1)Protozoa {animal-like Protists} (means first animal) All protozoa digest their food in stomach-like compartments called vacuoles. they make and give off nitrogen Life in a drop of pond water

4 types of Protozoans a)Move by cilia b)Move by “false-feet” (psuedopod) c)Move by Flagella d)Don’t move (parasites)

a) Ciliates have hair-like projections called cilia They use the hairs to help food particles get sucked in to them beat their cilia in a rhythmic pattern to move along paramaceium

b) Amoeba (Sarcodines) they ooze about by extending parts of their cell as pseudopods or "false feet." they have fluid cell membranes or coverings that they can stretch out, bend and curve.

c) Flagellates have one or several long, whip-like projections called flagella poking out of their cells. they swim by waving their flagella, using them much like a fish uses its tail to push itself through water. Chilomonas Euglena

d) Protists that don’t move Parasitic protozoans Malaria –Anopholes mosquito '''Toxoplasma gondii'''

Some Protozoans we expect to find: Spirostomum Euplotes Chilomonas Euglena Dileptus

How are protists harmful? Malaria is caused by a sporozoan (a parasitic protist) enters through the Anopheles mosquito African Sleeping sickness *Flagellates called trypanosomes Cause fever and sleepiness