Algae

14 cards   |   Total Attempts: 184
  

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Cards In This Set

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Question 1
Cyanobacteria
Prokaryoyotes
Pigments: Chlorophyll a, Phycobilins (red and Blue)
Photosynthesize, produce O2
May fix N2 in heterocysts
Recombination but no mitosis, Meiosis
No flagellae but some move
Ecology
Ponds, oceans, hotwater
Question 2
Prochlorophytes
Prokaryotes
Pigments: chlorophyll a,b, No phycobilins(red and blue)
Question 3
Chlorophyta (green Algae)
Unicells, fillament, sheets, colonies, sphere, stars
Freshwater, marine, wet films, symbionts
Pigments: Chl a,b, carotenoids
Store food as starch
Cell walls: cellulose
Sexual and asexual reproduction
Variations
a. Unicellular
Motile:chlamydomonas, chlorella
Desmids: star shaped or crescent shape
Acetabularia
b. Filamentous
Spirogyra
Oedogonium
hydrodietyon
c. Colonial (multicelluar)
Ulva
Volvox
d. Coenocytic
Codium





Phylum Chromophyta (Kingdom chromista)
Features in Common
a.Chlorophll a, Carentoids, xanthophylls
b. Store food as oils or carbohydrates laminarin
c. Hiarlike projections on flagellum
Phylum Chromophyta
Xanthophyceae: yellow-green algae
A. Freshwater unicells
b. flagellae point opposite directions
Phylum Chromophyta
Chrysophyceae: Golden-brown algae
A. Freshwater planktonic unicells
b. flagellae at right angles
c. eyespot on a flagellum
Phylum Chromophyta
Bacillariophyceae: Diatoms
Unicelled, diploid
Centric (circular), pennate (elongated)
frustule of perctins with silica
Cell division
Chlorophylls a, c, fucoxanthin
Asexual reproduction
Ecology:
Primary producer
Oil stores
Diatomaccous earth
Phylum Chromophyta
Phacophyceae Brown Algae
Multicellular, diploid
Holdfast, stipe blade
fucoxanthin
Examples:
Laminaria
Nereocystic (bullwhip kelp)
Fucus (rock weed)
Sargassum
Products:
Algin
Phodophyta: Red algae
Multicellular
Filaments or packed into thalh (?)
Complex life cycles -3 generations
Chlorophylls a, d, phycobilins
Storage products + floridean starch
Agar, Caragheenan
Rhodophyta: Red algae
Multicellular
Filaments or packed into thalh (?)
Complex life cycles -3 generations
Chlorophylls a, d, phycobilins
Storage products + floridean starch
Agar, Caragheenan
Question 11
Euglenophyta: Euglenas
Elongated unicell with felxivle pellicle
Food groove
Chloroplasts or not
One flagellem has hair fringe, other has eyespot
Question 12
Dinophyta: Dinoflagellates
Covered with cellulose plates
Two flagellae
Many have chlorophylls a,c, xanthophylls
lots of condensed DNA
Bioluminescent
Ecology:
Warm marine
Red tides
Pryhmnesiophyta: Haptophytes
Small unicells with 3 flagellae
3rd flagellum +for food capture
Chromophyte pigments: Chlorophyll a, carotenoids, xanthophylls
most covered with calcified plates
Ecology:
Plantonic marine
Question 14
Charophyta: Stoneworts
Slender stalk with whorls of branches
Green algal pigments: Chlorophylls a,b
Often calcified surfaces carotenoids