Lecture 15 Flashcards
which algae have freshwater food chains
chrysophytes, diatoms, green algae, dinoflagellates
which algae have marine food chains
haptophytes, dinoflagellates, diatoms
which two algae are considered plankton
phytoplankton and zooplankton
what are phytoplankton
photosynthetic protists and bacteria
what are zooplankton
heterotrophic tiny animals, protists and bacteria
what causes algal blooms
ecological disruption
what is in the algae carbon cycle
sugars; calcium carbonate; calcification causes CO2 from air to replace that in the ocean creating a CO2 “drawdown”
how do algae get their food
many are photosynthetic; some also take up dissolved organic compounds
what two kinds of algae take up dissolved organic compounds
phagocytosis and mixotrophs
what phyla do Plasmodial Slime Molds belong to
Phylum Myxomycota
what are some characteristics of Phylum Myxomycota
heterotrophic; terrestrial; move in an amoeboid fashion; not clearly related to any group
what phyla do Cellular Slime Molds belong to
Phylum Dictyosteliomycota
what are some characteristics of Phylum Dictyosteliomycota
heterotrophic; terrestrial; most likely related to amoeba; commonly occur in litter-rich soils; individual cells that gather in times of low nutrients to form a motile “slug”
what phyla do Dinoflagellates belong to
Phylum Dinophyta
what are some characteristics of Phylum Dinophyta
unicellular; about half photosynthetic; biflagellate; may have cellulose plates (“armor”)
