Micro Lecture 10 - The Protozoa Flashcards
Protozoans belong to Kingdom _______ and Domain ________.
Kingdom Protista and Domain Eukarya
The word “protozoa” came from the [Greek, Latin] word “Protozoon”.
Greek
“Protozoon” means __________.
“First animal”
Protozoans are [unicellular, multicellular].
Unicellular
Protozoans are [prokaryotic, eukaryotic].
Eukaryotic
Protozoans are eukaryotes that lack cell wall.
True or False
True
Protozoans are mostly heterotrophic and mostly free-living.
True or False
True
All protozoans are heterotrophic.
True or False?
False. A few are parasitic / pathogenic protozoans that feed directly on host fluids or actively feed on tissues.
The size range of protozoans.
3 - 300 micrometers
It is the main limiting factor for survival of protozoans.
Water
Example of a protozoan (and stage) that has a motile feeding stage.
Giardia - Trophozoite
A large number of species of protozoans can form cyst.
True or False
True
The _______ is the resting or dormant stage for protozoans where they have a protective membrane or a thickened cell wall.
Cyst
_______ can survive adverse environmental conditions. They can also play a role in dispersal of the organism.
Cyst
Methods of asexual reproduction of protozoans.
Mitotic cell division and Binary fission
Asexual reproduction of parasitic protozoans.
Multiple fission
Where does multiple fission occur?
Inside a host cell
The sexual reproduction of protozoans.
Conjugation
Protozoans are classified based on their __________.
Motility
4 classification of protozoans based on motility
- Flagellates
- Sarcodina
- Ciliates
- Sporozoates
____________ are protozoans that are non-motile.
Sporozoates
__________ are protozoans that move through fine hair-like structure called cilia.
Ciliates.
These are protozoans that move using the flagella or a tail-like structure.
Flagellates
These are protozoans that move using pseudopodia or false feet.
Sarcodina
