kingdom protista. protist characteristics 200,000 species come in different shapes, sizes, and...
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Protist CharacteristicsProtist Characteristics200,000 species come in different shapes, sizes, and colors
All are eukaryoteseukaryotes – have a nucleus and membrane-bound organelles
Most are aerobic and single celled
All live in a moist environment
Kingdom Kingdom ProtistaProtistaProtists are grouped into three major phyla based on their nutritional needs.1.Animal-like, the protozoa2.Plant-like, the algae3.Fungus-like, the moulds
11. Animal-Like: The . Animal-Like: The ProtozoansProtozoans
HeterotrophsHeterotrophs – they ingest or absorb other organisms or dead organic matter
UnicellularUnicellularCClassified based on how they move and where they live:
A) FlagellatesB) PseudopodsC) Cilates D) Sporozoans, primarily parasites
1A) Flagellates: the 1A) Flagellates: the motorboatsmotorboats
Also called zooflagellatesFree-living in fresh water or marine habitatsHave a whip-like extension called a flagellaflagella
to move
Some cause diseases, including:
Giardia lamblia, which causes upset stomachs and diarrhea.
1B) Pseudopods: the blobs1B) Pseudopods: the blobsMost are free living, also called
sarcodinesNo cell wallMove using pseudopodspseudopods – plasma
extensionsEngulf bits of food by phagocytosis which
involves flowing around and over food particles
Reproduce by binary fission
View http://www.youtube.com/watch?v=PsYpngBG394Phagocytosis http://www.youtube.com/watch?v=UeuL3HPfeQw&feature=related
1C) Ciliates: the hairy ones1C) Ciliates: the hairy ones
Live in both fresh water and marine habitats.
Move by beating tiny hairs called cilia.cilia.
Typically reproduce via binary Typically reproduce via binary fission, but can also reproduce fission, but can also reproduce sexually by conjugationsexually by conjugation
1D) S1D) Sporozoans: the parasitesporozoans: the parasites Non-motileNon-motile - Do not move on their own.Must live inside a hosthostOne type causes malariamalariahttp://highered.mcgraw-hill.com/olc/dl/120090/bio44.swfhttp://highered.mcgraw-hill.com/olc/dl/120090/bio44.swf
2. Plant-Like: The Algae2. Plant-Like: The Algae• Autotrophic - photosynthetic• Can be unicellular, multicellular or live in colonies• There are four main groups:
A)AlgaeB)EuglenaC) DiatomsD) Dinoflagellates
2A)Algae2A)AlgaeAre either unicellular or Are either unicellular or multicellularmulticellular
Are photosyntheticAre photosyntheticEach has chlorophyllchlorophyllCan be red, green or Can be red, green or brownbrown
No roots, stems, or leaves
2B) Euglena2B) EuglenaAquaticMove around like animals
Photosynthetic in lightHeterotrophic in darkReproduce asexually by binary fission
2C) Diatoms2C) DiatomsHave shells made of silica, so are glass-like
Photosynthetic pigment called carotenoidscarotenoids – give them a golden color
2D) Dinoflagellates2D) Dinoflagellates
Spin around using two flagella
Responsible for Red TidesCreate toxins that can kill animals and sometimes people
3. Fungus-Like: The Moulds3. Fungus-Like: The Moulds• Heterotrophic - feed on dead plants and animals• Live in cool, damp habitats• Have cell walls• Reproduce with spores•There are two main groupsa)Slime Mouldsb)Water Moulds