slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Origins of Eukaryotic Diversity – Protists Diversity PowerPoint Presentation
Download Presentation
Origins of Eukaryotic Diversity – Protists Diversity

Loading in 2 Seconds...

play fullscreen
1 / 37

Origins of Eukaryotic Diversity – Protists Diversity - PowerPoint PPT Presentation


  • 252 Views
  • Uploaded on

Origins of Eukaryotic Diversity – Protists Diversity. For Lecture, Make sure you know the names and characteristics of the taxa at the levels indicated by the red arrows. Water Molds ( Oomycota ). Nucleus (Eukaryotic) Membrane-bound organelles Ribosomes (80s)

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Origins of Eukaryotic Diversity – Protists Diversity' - benito


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide3

For Lecture, Make sure you know the names and characteristics of the taxa at the levels indicated by the red arrows.

Water Molds (Oomycota)

characteristics
Nucleus (Eukaryotic) Membrane-bound organelles

Ribosomes (80s)

Unicellular, Colonial, and Multicellular types

Four Supergroups:

Excavata

SAR (Stramenopiles, Alveolata, Rhizaria)

Archaeplastida(includes land plants)

Unikonta(includes animals and fungi)

Characteristics
supergroup excavata clade diplomonads
Supergroup: Excavata Clade: Diplomonads

ex. Giardia

“excavated” groove on one side of the body

(lack plastids, lack DNA in mitochondria,

two _______ nuclei, flagella, simple cytoskeleton)

haploid

supergroup excavata clade parabaslids
Supergroup: ExcavataClade: Parabaslids
  • ex. Trichimonas
  • (Causes Trichomoniasis)
  • “excavated” groove on one side of the body
    • (lack plastids, lack DNA in mitochondria, _____________________)

Undulating Membrane

supergroup excavata clade euglenozoa
Supergroup: Excavata Clade: Euglenozoa

“excavated” groove on one side of the body

  • Move by flagella with spiral or crystalline rod
  • 2 Groups:
    • Euglenids
    • Kinetoplastids
supergroup excavata clade euglenozoa group euglenids
Supergroup: Excavata Clade: EuglenozoaGroup: Euglenids

ex. Euglena

(anterior pocket with flagella)

supergroup excavata clade euglenozoa group kinetoplastids
Supergroup: Excavata Clade: EuglenozoaGroup: Kinetoplastids

ex. ___________

(single large mitochondria with kinetoplast - organized mass of DNA)

Trypanosoma

supergroup sar clade alveolata
Supergroup: SARClade: Alveolata
  • Supergroup Char: DNA
  • Clade characteristics: Contain Alveoli (membrane-bounded sacs) beneath their cell surface
  • 3 Groups:
    • Dinoflagellates
    • Apicomplexans
    • Ciliates
supergroup sar clade alveolata1
Supergroup: SARClade: Alveolata

Group: _____________

(2 flagella located within a groove, xanthophyll)

Dinoflagellates

supergroup sar clade alveolata2
Supergroup: SARClade: Alveolata

group: Apicomplexans

ex. __________

(parasitic, apical structure)

Plasmodium

supergroup sar clade
Supergroup: SARClade: _____________

Stramenopiles

  • Supergroup Char: DNA
  • Clade characteristics: Have hair-like projections on flagella
  • Four Groups:
    • Diatoms (Bacillariophyta)
    • Golden Algae (Chrysophyta)
    • Brown Algae (Phaeophyta)
    • Water Mold (Oomycetes)
supergroup sar clade stramenopiles groups diatoms
Supergroup: SARClade: StramenopilesGroups: Diatoms

Overlapping silica test

pigments: carotene, xanthophyll,

-Diatomaceous earth,

-Filters

-Fertilizing the oceans

supergroup sar clade stramenopiles groups golden algae chrysophyta
Supergroup: SARClade: StramenopilesGroups: Golden Algae (Chrysophyta)

cell wall: ________

pigments: carotene,

xanthophyll

Silica

supergroup sar clade stramenopiles groups brown algae
Supergroup: SARClade: StramenopilesGroups: Brown Algae

cell wall: cellulose, algin

Alternation of generations

supergroup sar clade stramenopiles groups water molds oomycota
Supergroup: SARClade: StramenopilesGroups: Water Molds (Oomycota)

pigments:none

cell wall: cellulose, coenocytic (aseptate) hyphae

Irish Potato Famine, French Wine Crisis (1800’s)

sar rhizaria
SAR (Rhizaria)
  • Thin pseudopodia Used for movement and feeding
  • Groups:
    • Cercozoans
    • Foraminiferans
    • Radiolarians
supergroup sar group cercozoans
Supergroup: SARGroup: Cercozoans

Plastids surrounded by four membranes (secondary endosymbiosis).

2 from cyanobacterium

3rd from alga’s plasma membrane

4th from heterotrophic food vacuole.

supergroup rhizaria group foraminiferans forams
Supergroup: RhizariaGroup: Foraminiferans (Forams)
  • porous shells – made of ____________

Calcium Carbonate

supergroup rhizaria group radiolarians
Supergroup: RhizariaGroup: Radiolarians

Actinopods (fused plates – silica with

axopodia)

supergroup archaeplastida
Ancient protists that engulfed a cyanobacterium

Three Groups:

Red Algae (Rodophyta)

Green Algae (Chlorophyta)

Land Plants

Supergroup: Archaeplastida
supergroup archaeplastida group chlorophyta charophytes
Supergroup: ArchaeplastidaGroup: Chlorophyta(& Charophytes)

Green Algae

Have Chloroplasts similar to plants

supergroup unikonta
Supergroup: Unikonta
  • Very Diverse Group
  • Molecular Systematics links groups (but highly debatable)
    • Two Clades:
      • Amoebozoans
      • Opisthokonts
supergroup unikonta clade amoebozoans group slime molds group gymnamoebas group entamoebas
Supergroup: UnikontaClade: Amoebozoans Group:Slime Molds Group:Gymnamoebas Group:Entamoebas
  • Many With Lobe or tube shaped _____________

Pseudopodia

supergroup unikonta clade amoebozoans group slime molds group gymnamoebas group entamoebas1
Supergroup: Unikonta Clade: AmoebozoansGroup:Slime Molds Group:Gymnamoebas Group:Entamoebas
  • Produce fruiting body that aids in spore dispersal
  • Plasmoidial – NOT ________________
  • From a plasmodium (feeding stage) single mass of cytoplasm with many nuclei
    • diploid

Multicellular

supergroup unikonta clade amoebozoans group slime molds group gymnamoebas group entamoebas2
Supergroup: Unikonta Clade: AmoebozoansGroup:Slime Molds Group:Gymnamoebas Group:Entamoebas
  • Produce fruiting body that aids in spore dispersal
  • ___________
  • (feed like individual amoebas)
    • aggregate to breed or during stress

Haploid Organisms

Cellular

supergroup unikonta clade amoebozoans group slime molds group gymnamoebas group entamoebas3
Supergroup: Unikonta Clade: Amoebozoans Group:Slime MoldsGroup:Gymnamoebas Group:Entamoebas

Most are Free-living Amoebas

supergroup unikonta clade amoebozoans group slime molds group gymnamoebas group entamoebas4
Supergroup: Unikonta Clade: Amoebozoans Group:Slime Molds Group:GymnamoebasGroup:Entamoebas

Most are parastic amoebas

Entamoeba histolytica 3rd eukaryotic after Malaria and Schistosomiasis

supergroup unikonta clade opisthokonts group nucleariids group choanoflagellates
Supergroup: Unikonta Clade: Opisthokonts Group:Nucleariids Group:Choanoflagellates

Very Diverse Group:

Nuceariids = most closely related to Fungi

Choanoflagellates = most closely related to animals

supergroup unikonta clade opisthokonts group nucleariids
Supergroup: Unikonta Clade: OpisthokontsGroup:Nucleariids
  • Amoebas that feed on algae and bacteria
supergroup unikonta clade opisthokonts group choanoflagellates
Supergroup: Unikonta Clade: OpisthokontsGroup:Choanoflagellates
  • Similar in morphology and DNA to animals