5. PROTOZOA
What’s a Protozoa?
-Protozoa are a diverse group
of unicellular eukaryotic organisms.
What’s the terminology of Protozoa?
- The word "protozoa" (singular protozoon,
or protozoan) was coined in 1818.
6. He coined the word
Protozoa as the
Greek equivalent
of the German
"Urthiere," meaning
"primitive, or
original animals".
Goldfuss erected
Protozoa as
a class containing
what he believed
to be the simplest
animals. He was
a German palaeon-
tologist, zoologist
and botanist.
7. PROTOZOA
They are eukaryotic organisms which means that they
have a membrane-bound nucleus and organelles.
They are also heterotrophic meaning they rely on the
environment for their nutrition. They DO NOT HAVE
Chlorophyll.
8. Organisms traditionally classified as
protozoa are abundant
in aqueous environments and soil, occupying
a range of trophic levels. The group
includes flagellates (which move with the
help of whip-like structures
called flagella), ciliates (which move by using
hair-like structures called cilia)
and amoebae (which move by the use of
foot-like structures called pseudopodia).
Some protozoa are sessile, and do not move
at all.
9. IMPORTANCE
As components of the micro- and meiofauna, protozoa
are an important food source for microinvertebrates.
Thus, the ecological role of protozoa in the transfer of
bacterial and algal production to successive trophic
levels is important. As predators, they prey
upon unicellular or filamentous algae, bacteria,
and microfungi. Protozoan species include both
herbivores and consumers in the decomposer link of
the food chain.
14. AMOEBA
- A type of cell that can alter it’s
shape.
- Amoeba cells occur not only
among protozoa, but also in
animals, algae, and Fungi.
- They have psuedopods.
- Mostly Unicellular and
heterotrophic.
15.
16. TRYPANOSOMA
- Unicellular parasite.
- Flagellate protozoa
- In invertebrate host they are
found in the intestine, But in
mammals they are commonly found
in the bloodstream.
- Causes Sleeping sickness.
17.
18. PLASMODIUM
- Commonly known as malaria parasite
- a large genus of parasitic protozoa
- It is heterothopic.
- it causes Malaria : a lethal diseases usually found in
tropical regions.
- It has 2 host in this life cycle: a human or a mosquito
vector.
19.
20. PARAMECIUM
- A genus of unicellular ciliated Protozoa.
- commonly found freshwater, brackish and marine
environments.
- used in labs as test subject
- also called as white rat.
21.
22. LEISHMANIA
- A genus of parasitic protozoa.
- responsible for the disease Leishmaniasis.
- commonly infects rodents, humans and canids
- Leishmaniasis is commonly carried by sandflies.
- Leishmaniasis is a disease that causes skin ulser.
Editor's Notes
Pseudopod is the temporary extension of the cytoplasm.
