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50 Cards in this Set
- Front
- Back
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Protist reproduction
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May be sexual
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Both Trichomonas and Giardia are parasitic protists in the group called
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Excavates
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Phytoplankton are very important to the aquatic ecosystems because they
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Absorb CO2
Produce glucose and water |
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Which of the following characteristics distinguishes red algae from diatoms and dinoflagellates?
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Multicellular
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Which protozoan group consists of entirely parasitic forms
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Apicomplexans
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Which group is characterized by gritty, glassy, protective shells
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Diatoms
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A parasitic protist that presents a major health problem to backpackers and hikers if they drink unfiltered stream or lake water is
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Giardia
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Which of the following may be parasitic in humans
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Amoeba or apicomplexans
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Which group has silica shells similar to those of diatoms
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Radiolarians
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The eyespot of a Euglena cell allows it to
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orient toward light
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Which group is the critical foundation of marine food webs?
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Diatoms
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Which protist causes African sleeping sickness?
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Trypanosoma
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A symbiotic protist lives within the guts of termites and allows the host to digest cellulose. This organism belongs to which group?
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Parabasalids
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Beavers are major carriers of Giardia, a ________ that can cause severe diarrhea to people who drink water that contains the organism's cysts
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diplomonad
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The giant kelp found along the Pacific coast is an example of
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brown algae
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Which of the following is a parasitic protist that is spread by Anopheles mosquitoes?
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Plasmodium
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The most complex group of unicellular protists is the ________.
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Ciliates
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Dysentery can be caused by parasitic, lobose ________ that occur in freshwater in warm climates
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amoebas
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Which group is commonly referred to as the "seaweeds"?
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brown algae
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Which protist is an invasive seaweed that has severely impacted the Mediterranean Sea, and threatens many other marine environments?
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Caulerpa
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Which of the following evolved from protists
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fungi
plants animals |
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The finger-like projections that some protists use for capturing prey are called
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pseudopods
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The white cliffs of Dover, England were formed over millions of years by the accumulation of calcium carbonate shells from ________.
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foraminiferans
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Plasmodial slime molds are described as acellular because they
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have no membranes surrounding their nuclei.
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Which group is responsible for 70% of the photosynthesis on Earth?
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phytoplankton
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Which group has caused such agricultural problems as downy mildew, potato blight, and an avocado disease?
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oomycetes
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Free-floating, photosynthetic, unicellular members of Protista include
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phytoplankton
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Which group of photosynthetic, mostly marine protists were named for the presence of two flagella that create a "whirlpool-like" motion?
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dinoflagellates
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Which of the following is considered to be most closely related to the plants?
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green algae
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Which of the following is NOT a characteristic of the organism that causes malaria?
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prokaryotic
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Which unicellular protists have silica shells consisting of top and bottom halves that fit together like pill boxes?
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diatoms
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Which of the following is eukaryotic, usually acts as a producer in its ecosystem, and spins with its flagella?
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dinoflagellates
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Which of the following groups is eukaryotic?
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protists
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Which of the following can be photosynthetic?
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Diatoms
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When a red tide occurs, huge numbers of these microscopic organisms are filtered out of coastal waters by oysters and clams. This sometimes causes the shellfish to become toxic to people that eat them. The organisms that create the red tide are classified as
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Dinoflagellates
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The ________ algae represent an important source of carrageenan, which is used to thicken paints, cosmetics and ice cream
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Red
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When you eat sushi rolls wrapped in nori (a type of seaweed), you are eating a
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photosynthetic protists
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Protists may be
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Photosynthetic
Predatory Symbiotic Parasitic |
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The short, hairlike structures that propel Paramecium through the water are called
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cilia
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When dry conditions or starvation stimulate an acellular slime mold to change form, it becomes
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fruiting body
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Which group of protists includes photosynthetic, unicellular, freshwater organisms that possess eyespots?
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euglenids
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Which of the following makes pseudopods?
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an amoeba
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Protist photosynthesis relies upon
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chloroplasts
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Cyanobacteria and phytoplankton are both
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photosynthetic
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Which group of protists includes photosynthetic, individual cells that lack a rigid cell wall and move via a flagellum
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Euglenids
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Which of the following best describes the protists, as a group?
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Eukaryote that is not a fungi, animal or plant
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Phytoplankton are
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photosynthetic
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Individuals of which protist group can grow hundreds of feet long, and almost half a foot per day?
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brown algae
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The active, feeding form of a/an ________ is a thin, multinucleate plasmodium.
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acellular slime mold
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Which protist causes a sexually transmitted disease
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trichomonas
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