KINGDOM PROTISTA Supplementary Material Flashcards
are extremely diverse in terms of their biological and
ecological characteristics
Protists
they are an artificial
assemblage of phylogenetically unrelated groups.
Protists
display highly varied cell structures, several types of reproductive strategies virtually every possible type of nutrition, and varied habitats
Protists
are asymmetrical,
single-celled organisms with a
feeding groove “excavated” from
one side.
Excavata
This supergroup includes
heterotrophic predators,
photosynthetic species, and
parasites.
Excavata
Its subgroups are the
diplomonads, parabasalids, and
euglenozoans.
Excavata
3 subgroups of excavata
diplomonads, parabasalids, and
euglenozoans.
example of protists in the subgroup diplomanads
Giardia lamblia
a very common digestive tract parasite,
Giardia lamblia
It lives in the intestinal tracts of
canines and felines, and can actually impact humans
too and trigger gastrointestinal upset, vomiting and
diarrhea and affect growth in canines.
Giardia lamblia
The infection the
parasite Giardia lamblia triggers is called
Giardiasis.
also exhibits semi-functional mitochondria.
parabasalids
these structures function anaerobically and are called hydrogenosomes because they produce hydrogen gas
as a byproduct.
parabasalids
they move with flagella and membrane rippling.
Parabasalids
a parabasalid that causes a sexually transmitted disease in humans, employs these mechanisms to
transit through the male and female urogenital tracts.
Trichomonas vaginalis
includes parasites, heterotrophs,
autotrophs, and mixotrophs, ranging in size from 10
to 500 μm.
Euglenozoans
they move through their aquatic habitats using two long flagella that guide them toward light
sources sensed by a primitive ocular organ called an
eyespot.
Euglenoids
a primitive ocular organ called an
eyespot
familar genus of euglenozoans
Euglena
encompasses some
mixotrophic species that display a photosynthetic
capability only when light is present.
Euglena
what happens to euglena chroloroplast in teh dark
shrink up and temporarily cease functioning
the human parasite ————- belongs
to a different subgroup of Euglenozoa, the
kinetoplastids.
Trypanosoma brucei
common in central Africa and is the
causative agent of African sleeping sickness,
Trypanosoma brucei
a disease associated with severe chronic fatigue,
coma, and can be fatal if left untreated.
African sleeping sickness