Biology Lab 3

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Paramecium Caudatum

Alveolata

• Micronucleus
  
• Cilia
  
• Vacuole
  

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Volvox

Green Algae ; Chlorophyta

• Colonial
  
• Oogamy
  
• Identify: daughter colony
  

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Fucus

Stramenopiles ; Phaeophyta

• Brown Algae
  
• Rockweed
  
• Blade, Stipe, Holdfast, Gas Bladder
  

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Physarum (Slime mold)

Amoebozoa

• Plasmodium- large visible mass
  
• Cytoplasmic streaming- cytoplasmic movement, movement of

nutrients, locomotion

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Euglena

Euglenozoa

• Mixotrophic- can use a mix of different food sources
  
• Photoautotrophic and heterotrophic
  
• One Flagellum- locomotion
  

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Plasmodium Falciparum

Alveolata ; Apicomplexa

• Causes malaria transmitted by mosquitoes
  
• Apical Complex- structure used for penetrating a host cell
• All are parasitic protists

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Chlamydmonas

Green Algae ; Chorophyta

• Unicellular
  
• 2 flagella
  

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Spirogyra

Green Algae ; Charophyta

• Filamentous
  
• Isogamy
  
• Identify - Chloroplast, conjugation tube, zygospore
  
• Conjugation- physical process of sexual reproduction
  

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Diatoms

Stramenopiles

• Diatoms is a common name, not Genus!
  
• Cell walls made of Silica

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Ceratium

Alveolata ; Dinoflagellates

• Two flagella for locomotion
  
• "Red Tide" response to nutrient influx, population bloom
  

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Trypanosoma

Euglenozoa

• Parasitic
  
• African sleeping sickness ( Vector: Tsetse fly)
  
• Chaga's disease ( Vector: Assassin Bug)
  

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CLADES

•Amoebozoa

•Alveolates

•Euglenozoa

•Stramenopiles*- Golden algae, Yellow-green Algae, Diatoms

- Phaeophytes*– Brown algae; Fucus

•Green Algae-Phylum: Chlorophyta/Charophyta

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Amoeba

Amoebozoa

Pseudopodia- "False feet"

Locomotion

Phagocytosis - capture of prey

Nucleus

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Green Algae

Possible structural arrangements:

• Unicellular - One cell
  
• Colonial - Cells attached but all metabolically independent
  
• Filamentous- Chains of cells
  

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Green Algae

Characteristics:

• Primarily Aquatic
  
• Photosynthetic (chlorophyll a and b)
  
• Store starch in plastoids
  
• Cell walls similar to those of traditional land plants

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Sexual reproduction in Green Algae

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Gamete - Sex cell

Isogamy- indistinguishable difference between male and female, motile gametes

Heterogamy- Both gametes motile, but differ in apperence; females possess larger hametes (eggs)

Oogamy- Large non-motile egg, smaller motile sperm

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Protists

A diverse paraphyletic grouping or organisms classified by nutritional mode

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Algae: Plant-like autotrophs

Protozoa: Animal like heterotrophs

Slime Molds: Fungus-like, absorptive, heterotrophs