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Biology: Concepts and Applications

Cecie Starr, Christine A. Evers, Lisa Starr

Chapter 20

The Protists - all with Video Answers

Educators

Chapter Questions

01:20

Problem 1

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

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:22

Problem 2

Deposits of shells from ancient________are mined as chalk and limestone.
a. dinoflagellates
b. diatoms
c. radiolarians
d. foraminiferans

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:29

Problem 3

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

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:06

Problem 4

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

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:15

Problem 5

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

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:06

Problem 6

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

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:03

Problem 7

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

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:01

Problem 8

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

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:01

Problem 9

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

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:16

Problem 10

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

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:09

Problem 11

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

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:28

Problem 12

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

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:09

Problem 13

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

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:10

Problem 14

All green algae ________.
a. have a cell wall
b. are marine
c. are multicellular
d. all of the above

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:31

Problem 15

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

Patina Herring
Patina Herring
Numerade Educator