green algae phylum ____________ habitat: widespread in marine and ______ water notes: –very...
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![Page 1: Green Algae Phylum ____________ Habitat: widespread in marine and ______ water Notes: –Very diverse group, hard to generalize about their ecology –May](https://reader030.vdocuments.site/reader030/viewer/2022032703/56649d085503460f949d9572/html5/thumbnails/1.jpg)
Green Algae
• Phylum ____________• Habitat: widespread in
marine and ______ water
• Notes:– Very diverse group, hard
to generalize about their ecology
– May be _________, filamentous or colonial, or multicellular
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Filamentous Green Algae_________
has spiral-shaped __________
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• Filamentous with spiral chloroplast in each cell
• Forms green “____” in ponds• Pyrenoids (sites of starch
storage) occur in the chloroplast• Asexual reproduction is by
__________ of the filament.
CHLOROPHYTA--SPIROGYRA
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Spirogyra _________, a form of sexual reproduction
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another filamentous Green Algae __________
__ Star-shaped chloroplasts per cells
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a colonial Green Algae … _______________ colony with Daughter
colonies
Mother Colony
Daughter Colony
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• SPHERICAL COLONY OF ____________ CELLS (colony is motile)
• Flagella on one side, ___ ___ ____ on other
• ASEXUAL REPRODUCTION:– A SURFACE CELL DROPS INSIDE
BALL AND BY _______ PRODUCES DAUGHTER COLONY.
– PARENT COLONY EVENTUALLY ______ TO RELEASE DAUGHTER COLONIES.
CHLOROPHYTA--Volvox
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Colonial Green Algae, Volvox
Daughter cells remain attached to the parent cells COLONY
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Male and female colonies form different germ cells. ______ cells are formed by division. The female germ cells do not divide. They enlarge to form an ova.
In some species the colonies are ____________.
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http://www.plingfactory.de/Science/GruKlaOeko/Teichleben/Algen/Oedogonium%20sp..jpg
Oedogonium thallus
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http://www.botit.botany.wisc.edu/images/130/Chlorophyta/Oedogonium_Images/Zoospore_MC.low.jpg
Oedogonium
Here the filaments are out of focus.The asexual __________ is in focus.
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http://www.csupomona.edu/~jcclark/classes/bot125/resource/graphics/g/chl_oedogonium.jpg
http://www.biologie.uni-hamburg.de/b-online/fo44/18.jpg
Oedogonium
This is the zoospore, or maybe it is the sperm. Both have the same look!
When both oogonium and
__________ appear on the same filament the alga is
___________.
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• ________ fresh-water algae
• some cells of the filament become oogonia (egg-producing structures)
• some cells become antheridia (____-producing structures)
• sexual and _____ reproduction
CHLOROPHYTA – Oedogonium
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• Filamentous fresh-water alga
• ______ reproduction is by zoospore production
CHLOROPHYTA--Ulothrix
• Sexual reproduction involves flagellated ___________
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