Transcript chrysophytes - Bio Resource Site

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“chrysophytes”
chryso meaning or indicating
the color ‘gold’
phyta meaning plants
“Plant-like protists”
◦ Eukaryotes
◦ photosynthetic
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Other characteristics
◦ Can be unicellular
◦ Can be filamentous
◦ Can be colonial
Chrysochrumulina sp.
phylum
Chrysophyta
class
Bacillariophyta
(diatoms)
class
Chrysophyceae
(golden, or
golden brown
algae)
class
Xanthophyceae
(Yellow-green
algae)
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Chloroplast
◦ An organelle containing chlorophyll
◦ The chlorophyll gives the bright yellow pigment
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Cell wall
◦ Is composed of
 Pectin
 Pectin + Cellulose
 Sometimes with silicon
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Freshwater that is low in calcium
Sometimes found in marine and estuarine
environments as well
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Chrysophytes are phototrophic.
 can become heterotrophic if unable to produce food
 can eat diatoms
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Different way of food storage
◦ Instead of storing it as a starch, chrysophytes store
the food as OIL. (polysaccharide laminarin)
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Anthophysa vegetans
- a freshwater species of golden-brown algae
- the first chrysophyte ever described
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Vaucheria litorea
- an estuarine species of yellow-green algae
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Cyclotella ocellata
-a cylindrical diatom
- diameter: 6-30 micrometers
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Capable of both
◦ Sexual reproduction
 and
◦ Asexual reproduction
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Solitary
◦ May form thread-like colonies
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Usually are producers