Ch 20 Flashcards
Which of the following best fits into the protist’s group?
Prokaryotes
Animals
Plants
Fungi
Any eukaryote that is not a plant, animal, or fungus
Any eukaryote that is not a plant, animal, or fungus
Some protists, such as amoebas, rely on finger-like projections called ________ for capturing prey and moving.
pseudopods
A protist that lives inside a host organism and absorbs nutrients from that living host is parasitic. predatory. symbiotic. a decomposer. photosynthetic.
parasitic
The protists include photosynthetic, parasitic, and pathogenic species. True or False?
True
Protists
form a single clade.
are prokaryotic.
obtain nutrition through a variety of different methods.
develop embryos during reproduction.
carry out photosynthesis without chloroplasts.
obtain nutrition through a variety of different methods.
Protists that absorb nutrients from dead organic matter are called predatory. parasitic. symbiotic. photosynthetic. decomposers.
decomposers.
The first protist chloroplast was likely to have been a(n) example of secondary endosymbiosis. chemosynthetic bacterium. symbiotic green alga. photosynthetic bacterium. virus.
photosynthetic bacterium.
The most complex group of unicellular protists is the ________.
ciliates
The ________ algae are an important source of carrageenan, which is used to thicken paints, cosmetics, and ice cream.
red
The foundation of a marine food chain is algae. Archaea. fungi. viruses. plants.
algae.
Protists that have two nuclei are classified as parabasalids. ciliates. amoebas. diplomonads. apicomplexans.
diplomonads.
Malaria is caused by a protist that is transmitted by the bite of ________.
mosquitoes
Which protist causes a sexually transmitted disease?
Trichomonas
Pfiesteria
Trypanosoma
Giardia
PlasmodiumTrichomonas
The group of protistan aquatic organisms known generally as ________ produces most of the world’s oxygen.
phytoplankton
A parasitic protist that presents a major health problem to backpackers and hikers if they drink unfiltered stream or lake water is
Trypanosoma.
Plasmodium.
Giardia.
Pfiesteria.
Didinium.Giardia.
Which group is commonly referred to as the "seaweeds"? Ciliates Water molds Cyanobacteria Brown algae Phytoplankton
Brown algae
When a red tide occurs, huge numbers of microscopic organisms are filtered out of coastal waters by oysters and clams. This sometimes causes the shellfish to become toxic to people who eat them. The organisms that create the red tide are classified as
dinoflagellates.
The short, hair-like structures that propel Paramecium through the water are called vacuoles. flagella. pseudoplasmodia. pseudopods. cilia.
cilia.
Which of the following is considered to be most closely related to plants? Euglenids Brown algae Diatoms Green algae Slime molds
Green algae
What are the main differences between prokaryotes and protists?
protists have organelles (contractile vacuoles)
Prokaryotes do not except for ribosomes ( granules)
What is secondary endomymbiosis?
where a non-photosynthetic protists “eats” or engulfs a photosynthetic protists that contains chloroplast
What is the importance of dinoflagelates in marine ecosystems? What can happen when they reproduce rapidly?
They produce most of the oxygen into the sea and are a food source. They produce red tide
What is the major ecological role played by single-celled algae?
Food, shelter, and oxygen
Which protists group consists entirely of parasitic forms?
Apicomplexans
Which protist groups include seaweeds?
Brown Algae
Which protist groups include species that use pseudopods?
The amoebozans, cellular slime molds, cercozans, foraminiferans, radiolarians,
The main groups of protista
alveolates, amoebozoans, cercozans, eugleozoans, excavates, stramenopies, red algae, green algae
Which ones can be photosynthetic
Euglenids, diatoms, dinoflagelles, brown algae, red algae, green algae
Which ones are slime molds
amoebozoans- acellular and cellular
protists in which there is blurred colony and individuals
Which ones have shells of silica and which one of calcium carbonate
Diatoms, Radiolarians
Foraminiferans, sometimes red algae
Which ones contribute to phytoplankton
Dinoflagellates, Diatoms, (microscopic single celled) Green Algae
Which ones have 2 perpendicularly arranged flagella?
Dinoflagellates
Which ones cause the red tides
Dinoflagellates
Which ones at times photosynthesize and at times can be heterotrophs?
Euglenids
Which ones are closer related to plants?
Green Algae
Which of the following is a producer in its ecosystem because of the photosynthesis it performs? prions viruses cyanobacteria zooflagellates sporozoans
cyanobacteria
Which of the following is associated with cyanobacteria? plasma membrane DNA and RNA surrounded by a protein coat chloroplast DNA inside a nucleus cell walls with cellulose
plasma membrane
Trypanosoma is a unicellular, eukaryotic blood parasite that causes African sleeping sickness. Into which of the following groups is it classified? archaea viruses bacteria plantae protista
protista
which protists are entirely parasitic and have no means of locomotion? cellular slime molds ciliates amoebas sporozoans zooflagellates
sporozoans
What phytoplankton group can reproduce so prodigiously that they can cause "red tides" killing large numbers of fish because the gills are clogged? red algae brown algae diatoms dinoflagellates
dinoflagellates
which protists use flagella for locomotion? cellular slime molds ciliates euglenoids zooflagellates both euglenoids and zooflagellates
both euglenoids and zooflagellates
which of these is a component of phytoplankton and supports aquatic food chains via its photosynthesis? sporozoans/apicomplexans diatoms brown algae amoebas slime molds
diatoms
Which of the following shares a common ancestor with plants and is the most like the earliest plants? cyanobacteria slime molds green algae amoebas viroids
green algae
Which of the following is an important recycler of nutrients (decomposer) in its ecosystem slime molds sporozoans/apicomplexans cyanobacteria viruses green algae
slime molds
