The Fascinating World of Algae: A Visual Journey Through Different Phyla
Kingdom Protista
The Catchall
Kingdom
Algae
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Autotrophic
Not plants – why?
Often contain pyrenoids
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Thallus or body
Unicellular or multicellular
Colonial: Volvoz
Filamentous: Spirogyra
Multicellular: Ulva
Asexual and sexual reproduction
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Phylum Chlorophyta
Phylum Phaeophyta
Phylum Rhodophyta
Phylum Bacillariophyta
Phylum Dinoflagellata
Phylum Chrysophyta
Phyla Euglenohyta
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Look
familiar?
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Green algae
Many different forms
Gave rise to land plants – why?
Choroplasts that contain a and b cholorphyll
Have carotenoids
Cell walls of cellulose
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Brown algae
Marine
Seaweed and kelps
Cooler areas of ocean
Fucoxanthin pigment
Store food as laminarin
ALL multicellular
Stemlike stipe
Leaflike region called blade
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Red algae but colors vary
Marine seaweeds
Smaller than brown algae and live in deeper
waters
Phycobilins – pigment for absorbing light
Some coated with polysaccharide
carageenan – cosmetics, gel capsules,
cheeses
Agar – extracted from cell walls of red algae
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Diatoms
Shells fit together like a box with a lid
Centric and pennate
Main component of phytoplankton
Diatomaceous earth
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Dinoflagellates
Small, unicellular
Most photosynthetic
Some bioluminescent
Red tide a problem
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Golden algae
Most fresh water
Form cysts
2 flagella
Carotenoids give color
Important for formation of petroleum deposits
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Euglenoids
Plant-like and animal-like characteristics
Many have cholorphyll and are
photosynthetic
No cell wall, motile
Most live in fresh water
See picture on page 533
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Slime molds:
Phylum acrasiomycota
Cellular slime molds
Amoeboid movement
Phylum Myxomycota
Plasmodial slime molds
Mass of plasmodium
Water molds
Phylum Oomycota
Blight
Phylum Chytridiomycota
Chytrids
Zoospores with one
flagellum
Maybe fungi?
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…
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Dive into the diverse and intriguing realm of algae with this visual guide. From the catchall kingdom Protista to the distinct phyla Chlorophyta, Phaeophyta, Rhodophyta, Bacillariophyta, Dinoflagellata, and more, learn about their characteristics, structures, and importance. Discover how green algae gave rise to land plants and explore the unique features of brown, red, and diatom algae. Uncover the beauty and significance of these often-overlooked organisms through stunning images and informative descriptions.
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Presentation Transcript
Kingdom Protista The Catchall Kingdom
Characteristics of Algae Autotrophic Not plants why? Often contain pyrenoids
Structure of Algae Thallus or body Unicellular or multicellular Colonial: Volvoz Filamentous: Spirogyra Multicellular: Ulva Asexual and sexual reproduction
Phylums Phylum Chlorophyta Phylum Phaeophyta Phylum Rhodophyta Phylum Bacillariophyta Phylum Dinoflagellata Phylum Chrysophyta Phyla Euglenohyta
Phylum Chlorophyta Look familiar?
Continued Green algae Many different forms Gave rise to land plants why? Choroplasts that contain a and b cholorphyll Have carotenoids Cell walls of cellulose
Phylum Phaeophyta Brown algae Marine Seaweed and kelps Cooler areas of ocean Fucoxanthin pigment Store food as laminarin ALL multicellular Stemlike stipe Leaflike region called blade
Phylum Rhodophyta Red algae but colors vary Marine seaweeds Smaller than brown algae and live in deeper waters Phycobilins pigment for absorbing light Some coated with polysaccharide carageenan cosmetics, gel capsules, cheeses Agar extracted from cell walls of red algae
Phylum Bacillariophyta Diatoms Shells fit together like a box with a lid Centric and pennate Main component of phytoplankton Diatomaceous earth
Phylum Dinoflagellata Dinoflagellates Small, unicellular Most photosynthetic Some bioluminescent Red tide a problem
Phylum Chrysophyta Golden algae Most fresh water Form cysts 2 flagella Carotenoids give color Important for formation of petroleum deposits
Phylum Euglenophyta Euglenoids Plant-like and animal-like characteristics Many have cholorphyll and are photosynthetic No cell wall, motile Most live in fresh water See picture on page 533
Fungus-like protists Slime molds: Phylum acrasiomycota Cellular slime molds Amoeboid movement Water molds Phylum Oomycota Blight Phylum Chytridiomycota Chytrids Zoospores with one flagellum Maybe fungi? Phylum Myxomycota Plasmodial slime molds Mass of plasmodium
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