Chapter 20

All flagellated protozoans ________. a. lack mitochondria b. are photosynthetic c. live as single cells d. cause disease

The presence of a contractile vacuole indicates that a single-celled protist ________. a. is marine b. lives in fresh water c. is photosynthetic d. secretes a toxin

Cattle benefit when________ in their gut help them digest plant material. a. trypanosomes b. diatoms c. ciliates d. foraminiferans

An insect bite can transmit a disease-causing ________ to a human host. a. trypanosome b. apicomplexan c. ciliate d. both a and b

________ are the closest protistan relatives of the fungi and animals. a. Stramenopiles b. Radiolarians c. Apicomplexans d. Amoebozoans

Accessory pigments of________ allow them to carry a. euglenoids b. green algae c. brown algae d. red algae

The protist that causes malaria is ________. a. multicellular b.a single cell c. colonial

The ________are important plant pathogens. a. dinoflagellates b. ciliates c. water molds d. slime molds

Silica-rich shells of ancient diatoms are the source of diatomaceous earth that can be used ________. a. to thicken foods b. as a gelatin substitute c. as a fertilizer d. as an insecticide

The sporophyte of a multicellular alga ________. a. is haploid b. is a single cell c. produces spores d. produces gametes

Where would you find a cellular slime mold? a. on the forest floor b. in a tropical sea c. in an animal gut d. in a mountain lake

The organism that causes the sexually transmitted disease trichomoniasis is a________. a. flagellated protozoan b. radiolarian c. ciliate d. apicomplexan

Match each item with its description. ________diplomonad ________apicomplexan ________trypanosome ________diatom ________brown alga ________red alga ________green alga ________amoeba a. cause of leishmaniasis b. silica-shelled producer c. unwalled cell with pseudopods d. anaerobic, no mitochondria e. closest relative of land plants f. multicelled, with fucoxanthin g. cause of malaria h. deep dweller with phycobilins