Kingdom ProtistaKingdom Protista

Chapter 20“Diversity is the Key”

What is a protist?What is a protist?

UnicellularEukaryoticClassified into 3 general categories

Animal likePlant likeFungus like*Based on mode of metabolism

Animal Like ProtistsAnimal Like Protists

Classified by movement1. Zooflagellates2. Sarcodines3. Ciliates4. Sporozoans

ZoomastiginaZoomastigina

Euglena, Trypanasoma“Flagellates” move by using a whip like tailHave red pigmented eyespot for detecting light

SarcodinaSarcodina

Amoeba proteus

Move and eat using psuedopodsFlexible and activeFresh and Salt Water

CiliophoraCiliophora

Paramecium/Vorticella Move by using ciliaMacronucleus-day to dayMicronucleus-chromosomes and DNAStentor to the rightFresh and Salt WaterContractile Vacuoles to remove water

SporozoaSporozoa

PlasmodiumReproduce using sporesParasites, carried by insectsPlasmodium causes malaria

Plant Like ProtistsPlant Like Protists

Classified by color1. Diatoms2. Dinoflagellates3. Red Algea4. Brown Algea5. Green Algea

BacillariophytaBacillariophyta

DiatomsContain carotenoids for their gold pigmentsHave geometric shells that are cell walls made of silica Marine and FreshwaterMany Uses (glass,toothpaste, soil component)

PyrrophytaPyrrophytaDinoflagellatesDouble flagellaCan secrete toxins in Red Tide (found in shellfish)Not all toxic, give off light

RhodophytaRhodophyta

Red AlgaeAbsorbs blue wavelengths of light allowing them to live deeper in the water columnHelps build coral reefs

PhaeophytaPhaeophyta

Brown algae/KelpLargest of the algaeCan grow up to 60 mClosely related to land plants in structureMostly marine

Giant KelpGiant Kelp

ChlorophytaChlorophyta

Volvox, UlvaMost numerous of all plantlike protistsFresh and marine water, green algaeMost attach to rocks Ulva shown to the right

Fungus Like ProtistsFungus Like Protists

Classified by reproduction1. Cellular Slime Molds2. Acellular Slime Molds3. Water Molds

AcrasiomycotaAcrasiomycota

Cellular Slime MoldsMove like amoebaReproduce with spores from “fruiting body” and undergo cell division?When food runs out, spores are released

MyxomycotaMyxomycota

Plasmodial Slime MoldsConsidered a giant bag of cytoplasm with many nucleiReproduce by spores from “sporangia”Extend vein like structures to absorb decaying foodCan grow several meters

OomycotaOomycota

Water molds and downy mildewsSaprophytic or ParasiticThrive on detritus in the waterMake “hyphae” or thin filaments Alternate b/t sexual and asexual reproduction