2.3 Protozoan Protista Flashcards
Topic - Protozoans
They are heterotrophs (predators or parasites) without a cell wall.
T/F
True
They are the primitive relatives of animals.
T/F
True
There are four major groups of protozoans:
I. Amoeboid Protozoans
II. Flagellated Protozoans
III. Ciliated Protozoans
IV. Sporozoans
Topic - Amoeboid Protozoans
They live in freshwater, seawater, or moist soil.
T/F
True
They move and capture prey by putting out pseudopodia (false feet).
Example.
Amoeba
______ engulfs prey by surrounding it.
Pseudopodia
Marine forms have silica shells on their surface.
T/F
True
Some of them are parasites.
Example.
Entamoeba histolytica (causes Amoebic dysentery)
Topic - Flagellated Protozoans
They are either free-living or parasitic.
T/F
True
They move by ______.
Flagella
The parasitic forms cause diseases such as sleeping sickness.
Example.
Trypanosoma (sleeping sickness)
(Vector - TseTse fly)
Topic - Ciliated Protozoans
They are aquatic, actively moving organisms using thousands of ______ and have ______ for Osmoregulation.
Cilia; Contractile Vacuole
They contain two types of nuclei:
A Micronucleus and a Macronucleus
They have a cavity called ______ that opens outside the cell surface.
Gullet
The coordinated movement of rows of cilia causes the water laden with food to be steered into the gullet.
Example.
Paramecium
Topic - Sporozoans
They have an infectious spore-like stage in their life cycle.
Plasmodium (malarial parasite)
Plasmodium has a vector named:
Female Anopheles Mosquito
