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Phaeophytes (Brown Algae) Lecture
terms and concepts and taxonomic branches
17
Plant Sciences
Undergraduate 2
07/08/2009

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Cards

Term
what is the life cycle of a phaeophyte?
Definition
sporic meiosis
Term
what is sporic meiosis?
Definition
multicellular in both haploid and diploid, aka alternation of generations; the organism changes phases through repeated rounds of meiosis and fertilization
Term
draw the life-cycle (-line ;)) of sporic meiosis
Definition
sporophyte->spore->gametophyte->gamete
Term
what is the diploid individual called?
Definition
sporophyte
Term
what is the haploid individual called?
Definition
gametophyte
Term
Phaeophytes are part of which phylum, also called?
Definition
Heterkontophyta, Stramenopiles
Term
what pigment do Phaeophytes (and most Heterokonts) have?
Definition
fucoxanthin
Term
what chlorophyll do Phaeophytes have?
Definition
a+c
Term
how would you describe the structural similarity between seaweed and plants?
Definition
analogous
Term
how do Phaeophytes store their carbohydrate?
Definition
As laminarin
Term
what is the body of a seaweed called?
Definition
a thallus, pl. thalli
Term
name the food species of Phaeophytes (three)
Definition
Laminaria (kombu), Porphyra (nori), Undaria pinnatifida (wakame)
Term
what food additive do Phaeophytes make?
Definition
algin
Term
what food additives do red algae make?
Definition
agar and carrageenan
Term
what are kelps, in general, and what order are they in?
Definition
offshore seaweeds, Laminales
Term
what are rockweeds, and their order?
Definition
intertidal seaweed, Fucales
Term
of what order is Sargassum, where does it float, and what is its ecological significance?
Definition
Fucales, in the Sargasso Sea of the Atlantic Ocean, and it provides the right environment for unique marine life-forms
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