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protozoan

an animal-like protist (p81)

pseudopod

a "false foot" or temporary bulge of the cell membrane used for feeding and movement in some protozoans (p81)

contractile vacuole

the cell structure that collects extra water from the cytoplasm and then expels it from the cell (p82)

cilia

the hairlike projections on the outside of cells that move in a wavelike manner (p83)

symbiosis

a close relationship between two organisms in which at least one of the organisms benefits (p84)

mutualism

a type of symbiosis in which both partners benefit from living together (p84)

spore

a tiny cell that is able to grow into a new organism (p85)

algae

a plantlike protist (p86)

pigment

a chemical that produces color (p87)

algal bloom

the rapid growth of a population of algae (p90)

red tide

an algal bloom that occurs in salt water (p91)

eutrophication

the buildup over time of nutrients in freshwater lakes and ponds that leads to an increase in the growth of algae (p92)

hypha

one of many branching, threadlike tubes that make up the body of a fungus (p96)

fruiting body

the reproductive hypha of a fungus (p98)

budding

a form of asexual reproduction of yeast in which a new yeast cell grows out of the body of a parent (p98)

lichen

the combination of a fungus and either algae or an autotrophic bacterium that live together in a mutualistic relationship (p104)

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