Protozoa Flashcards
characteristics of protozoa
unicellular
eukaryotic organisms
microscopic in size
a single cell may contain more than one nucleus
how are protozoa classified?
mode of locomotion
what are the locomotion organelles
flagella
cilia
pseudopodia= “false feet”fun
or none
what is the functional unit of protozoanontogeny (development) for protozoa
zoite
sporozoite
infective form
trophozoites
form which feeds and grows
merizoites
result of mergony that results within a host cell
tachyzoites
form which divides rapidly
bradyzoites
form which divides slowly
what kind of reproduction do protozoa have?
sexual and asexual (fission)
what are the two kinds of asexual reproduction
binary fission
multiple fission
what is binary fission?
one individual parent divides into two daughter cells
what is multiple fission
the nucleus and other organelles divide repeated leading to a large number of daughter cells
what is sexual reproduction
haploidy cells resulting from meiosis. followed by union of two cells
oocysts go through a process called ____ to become _____
sporulation, sporulated oocyst
what is the resting stage of the protozoa?
cyst
why does an oocyst become a cyst?
adverse environmental conditions- ex. food deficiency, dessication
excystation
a return of favorable conditions and release of cyst
how do the parasites of phylum Sarcomastigophora move?
pseudopodia and/ or flagella
how do the parasites of phylum ciliophora move?
cilia
how do the parasites of phylum Apicomplexa move
gliding- no locomotion agent
how many cells are in each oocyst?
one
