Protists

1
Protists

• Sorting Protists
• Basal Groups
• Aveolates
• Stramenopiles
• Closest Relatives of land plants
• Distant relatives of Fungi Animals

2
Protists

• Simple eukaryotes
• Single celled
• Can live in colonies

3
Parabasalids Diplomonads

• Parabasalids
• Flagellated heterotroph with bundled microtubules
  as long as the cell
• Diplomonads
• Flagellated heterotroph with no mitochondria 3
  flagella at its anterior end and 1 at its
  trailing end

4
Euglenoids

• Free-living cells of freshwater marine habitats
• Long flagella
• Contractile vacuole
• Counter waters tendency to diffuse in
• Reproduction
• Binary fission

5
Forams Radiolarians

• Found in marine environments as part of plankton
• Foraminiferans
• Shell of calcium carbonate
• Radiolarian
• Glasslike shells (silica)

6
Ciliated Alveolates

• Ciliates
• Live in seas fresh water
• Numerous cilia
• Cell mouth for food intake getting rid of
  excess waste

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Ciliates

• Paramecium
• Typical of the group
• Cilia
• Reproduction
• Asexually
• Sexually
• Conjugation

8
Protozoan Conjugation
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Flagellated Alveolates

• Dinoflagellates
• Parasitic photoautotrophs
• Plankton
• Primary producers
• Algal blooms
• Rapid, huge increase in algal population sizes
  after nutrient enrichment of an aquatic habitat

10
Flagellated Alveolates

• Apicomplexans
• Parasitic alveolate with unique microtubule for
  attachment and penetration of host cell
• Plasmodium
• Malaria

11
Chrysophytes

• Single celled photoautotrophs
• Golden algae
• Silica scales
• Yellow-green algae
• Chlorophyll c

12
Chrysophytes

• Diatoms
• Single-celled photoautotroph with perforated
  silica shell
• Two overlapping parts

13
Chrysophytes

• Brown algae
• Multicelled marine photoautotroph
• Kelp

14
Stramenopiles

• Oomycotes
• egg fungus
• Heterotrophic
• Absorb nutrients from host tissues or decaying
  organic matter
• Water molds
• Decomposers of aquatic habitats

15
Red Algae

• Aquadic, multicelled photoautotroph
• Contains chlorophyll a

16
Green Algae

• Chlorophytes
• Single-celled, multicelled, colonial
  photoautotroph
• Closely related to land plants
• Chlorella

17
Green Algae

• Charophytes
• Photoautotroph
• Once grouped with green algae
• Stoneworts

18
Green algae

• Volvox
• 500 to 60,000 flagellated cells
• Freshwater ponds