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The protists
General
26
Biology
Undergraduate 1
05/30/2012

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Term
algal bloom
Definition
Population explosion of tiny aquatic producers such as dinoflagellates.
Term
alternation of generations
Definition
Of land plants and some algae, a life cycle in which both haploid and diploid multicelled bodies form.
Term
alveolate
Definition
Member of a protist lineage having small sacs beneath the plasma membrane; dinoflagellate, ciliate, or apicomplexan.
Term
amoeba
Definition
Single–celled protist that extends pseudopods to move and to capture prey.
Term
amoebozoan
Definition
Shape–shifting heterotrophic protist with no pellicle or cell wall; an amoeba or slime mold.
Term
apicomplexan
Definition
Single–celled protist that lives as a parasite inside animal cells.
Term
brown alga
Definition
Multicelled marine protist with a brown accessory pigment in its chloroplasts.
Term
cellular slime mold
Definition
Amoeba–like protist that feeds as a single predatory cell; joins with others to form a multicellular spore–bearing structure when conditions are unfavorable.
Term
ciliate
Definition
Single–celled, heterotrophic protist with many cilia.
Term
contractile vacuole
Definition
in freshwater protists, an organelle that collects and expels excess water.
Term
diatom
Definition
Single–celled photosynthetic protist with brown accessory pigments in its choroplasts and a two–part silica shell.
Term
dinoflagellate
Definition
Single–celled, aquatic protist with cellulose plates and two flagella; may be heterotrophic or photosynthetic.
Term
euglenoid
Definition
Flagellated protozoan with multiple mitochondria; may be heterophic or have chloroplasts decended from algae.
Term
flagellated protozoan
Definition
Protist belonging to an entirely or mostly heterotrophic lineage with no cell wall and one or more flagella.
Term
foraminiferan
Definition
Heterotrophic single–celled protist with a porous calcium carbonate shell and long cytoplasmic extensions.
Term
gametophyte
Definition
A haploid, multicelled body that produces gametes in the life cycle of land plants and some protists.
Term
green alga
Definition
Photosynthetic protist that deposits cellulose in its cell wall, stores sugars as starch, and has chloroplasts containing chlorophylls a and b.
Term
pellicle
Definition
Layer of proteins that gives shape to many unwalled, singl–celled protists.
Term
plankton
Definition
Community of tiny drifting or swimming organisms.
Term
plasmodial slime mold
Definition
Protist that feeds as a multinucleated mass; forms a spore–bearing structure when enviromental conditions become unfavorable.
Term
protist
Definition
General term for a eukaryote that is not a fungus, animal, or plant.
Term
radiolarian
Definition
Heterotrophic single–celled protist with a porous silica shell and long cytoplasmic extensions.
Term
red alga
Definition
Photosynthetic protist that deposits cellulose in its cell wall, stores sugars as starch, and has chloroplasts containing chlorophyll a and red pigments (phycobilins).
Term
sporophyte
Definition
Diploid, spore–producing body in the life cycle of land plants and some algae.
Term
toxin
Definition
Chemical that is made by one organism and harms another.
Term
trypanosome
Definition
Parasitic flagellate with a single mitochondrion and a membrane–encased flagellum.
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