Kingdom Protista
 May be unicellular or multicellular
 May be autotrophic or heterotrophic
 May reproduce sexually or asexually.
 Protists are very varied
 Can be further divided
 Usually found around liquid water
 eukaryotic
Protozoa – Animal-like Protists
 Mostly single-celled, motile organisms that
feed by phagocytosis.
 Usually too small to be seen without a
microscope.
 Classified based on locomotion.
 1. Phylum Zoomastigina – animal-like protists
that move by means of flagella.
 2. Phylum Ciliophora – animal-like protists such
as Paramecium, which move using cilia.
 3. Phylum Sarcodina – move by means of
cytoplasmic streaming.
 4. Phylum Sporozoa – Parasites that form
spores at some point in their life cycle.
http://www.youtube.com/watch?v=fmwN_mD7TvY&saf
ety_mode=true&persist_safety_mode=1&safe=active
http://www.youtube.com/watch?v=7pR7T
NzJ_pA&safety_mode=true&persist_saf
ety_mode=1&safe=active
Algae – Plant-like Protists
 Photosynthetic
 Range from unicellular to multicellular
seaweed 60m in length.
 Have been on Earth for 2 billion years
 Classified based on colour.
 1. Phylum Chlorophyta – Green
algae, the most plant-like of all algae.
 2. Phylum Phaeophyta – Brown
algae. Seaweeds such as kelp
(Laminaria). Found in colder waters.
 3. Phylum Rhodophyta – Red algae.
Found mostly in warmer waters.
 4. Phylum Chrysophyta – unicellular and
photosynthetic. Make up most plankton.
 5. Phylum Pyrrophyta – Dinoflagellates,
which are extremely numerous. Each one
contains 2 flagella and a protective coat of
cellulose.
 6. Phylum Euglenophyta – unicellular
freshwater organisms with 2 flagella –
usually heterotrophic.
Fungus-like Protists – Slime
Moulds and Water Moulds
 Reproduce by spores.
 Have cellulose cell walls
 Very difficult to classify
 1. Phylum Oomycota – water moulds,
similar to fungi. Are saprophytes, meaning
they feed on dead organic matter. Caused
the Irish Potato Famine.
 2. Phylum Myxomycota – Plasmodial
Slime Moulds. Engulf small particles of
food.
 3. Phylum Acrasiomycota – Cellular slime
moulds. Usually exist as single cells, but
can group together if necessary.
http://www.youtube.c
om/watch?v=gsOA5H_L2g