Ch 20

Question 1

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

Answer 1

Any eukaryote that is not a plant, animal, or fungus

Question 2

Some protists, such as amoebas, rely on finger-like projections called ________ for capturing prey and moving.

Answer 2

pseudopods

Question 3

A protist that lives inside a host organism and absorbs nutrients from that living host is 
	parasitic.
	predatory.
	symbiotic.
	a decomposer.
	photosynthetic.

Answer 3

parasitic

Question 4

The protists include photosynthetic, parasitic, and pathogenic species. True or False?

Answer 4

True

Question 5

Protists
form a single clade.
are prokaryotic.
obtain nutrition through a variety of different methods.
develop embryos during reproduction.
carry out photosynthesis without chloroplasts.

Answer 5

obtain nutrition through a variety of different methods.

Question 6

Protists that absorb nutrients from dead organic matter are called
	predatory.
	parasitic.
	symbiotic.
	photosynthetic.
	decomposers.

Answer 6

decomposers.

Question 7

The first protist chloroplast was likely to have been a(n) 
	example of secondary endosymbiosis.
	chemosynthetic bacterium.
	symbiotic green alga.
	photosynthetic bacterium.
	virus.

Answer 7

photosynthetic bacterium.

Question 8

The most complex group of unicellular protists is the ________.

Answer 8

ciliates

Question 9

The ________ algae are an important source of carrageenan, which is used to thicken paints, cosmetics, and ice cream.

Answer 9

red

Question 10

The foundation of a marine food chain is 
	algae.
	Archaea.
	fungi.
	viruses.
	plants.

Answer 10

algae.

Question 11

Protists that have two nuclei are classified as 
	parabasalids.
	ciliates.
	amoebas.
	diplomonads.
	apicomplexans.

Answer 11

diplomonads.

Question 12

Malaria is caused by a protist that is transmitted by the bite of ________.

Answer 12

mosquitoes

Question 13

Which protist causes a sexually transmitted disease? 
        Trichomonas
	Pfiesteria
	Trypanosoma
	Giardia
	Plasmodium

Answer 13

Trichomonas

Question 14

The group of protistan aquatic organisms known generally as ________ produces most of the world’s oxygen.

Answer 14

phytoplankton

Question 15

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.

Answer 15

Giardia.

Question 16

Which group is commonly referred to as the "seaweeds"? 
Ciliates
	Water molds
	Cyanobacteria
	Brown algae
	Phytoplankton

Answer 16

Brown algae

Question 17

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

Answer 17

dinoflagellates.

Question 18

The short, hair-like structures that propel Paramecium through the water are called 
vacuoles.
	flagella.
	pseudoplasmodia.
	pseudopods.
	cilia.

Answer 18

cilia.

Question 19

Which of the following is considered to be most closely related to plants?
Euglenids
	Brown algae
	Diatoms
	Green algae
	Slime molds

Answer 19

Green algae

Question 20

What are the main differences between prokaryotes and protists?

Answer 20

protists have organelles (contractile vacuoles)

Prokaryotes do not except for ribosomes ( granules)

Question 21

What is secondary endomymbiosis?

Answer 21

where a non-photosynthetic protists “eats” or engulfs a photosynthetic protists that contains chloroplast

Question 22

What is the importance of dinoflagelates in marine ecosystems? What can happen when they reproduce rapidly?

Answer 22

They produce most of the oxygen into the sea and are a food source. They produce red tide

Question 23

What is the major ecological role played by single-celled algae?

Answer 23

Food, shelter, and oxygen

Question 24

Which protists group consists entirely of parasitic forms?

Answer 24

Apicomplexans

Question 25

Which protist groups include seaweeds?

Answer 25

Brown Algae

Question 26

Which protist groups include species that use pseudopods?

Answer 26

The amoebozans, cellular slime molds, cercozans, foraminiferans, radiolarians,

Question 27

The main groups of protista

Answer 27

alveolates, amoebozoans, cercozans, eugleozoans, excavates, stramenopies, red algae, green algae

Question 28

Which ones can be photosynthetic

Answer 28

Euglenids, diatoms, dinoflagelles, brown algae, red algae, green algae

Question 29

Which ones are slime molds

Answer 29

amoebozoans- acellular and cellular | protists in which there is blurred colony and individuals

Question 30

Which ones have shells of silica and which one of calcium carbonate

Answer 30

Diatoms, Radiolarians | Foraminiferans, sometimes red algae

Question 31

Which ones contribute to phytoplankton

Answer 31

Dinoflagellates, Diatoms, (microscopic single celled) Green Algae

Question 32

Which ones have 2 perpendicularly arranged flagella?

Answer 32

Dinoflagellates

Question 33

Which ones cause the red tides

Answer 33

Dinoflagellates

Question 34

Which ones at times photosynthesize and at times can be heterotrophs?

Answer 34

Euglenids

Question 35

Which ones are closer related to plants?

Answer 35

Green Algae

Question 36

``` Which of the following is a producer in its ecosystem because of the photosynthesis it performs? prions viruses cyanobacteria zooflagellates sporozoans ```

Answer 36

cyanobacteria

Question 37

``` 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 ```

Answer 37

plasma membrane

Question 38

``` 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 ```

Answer 38

protista

Question 39

``` which protists are entirely parasitic and have no means of locomotion? cellular slime molds ciliates amoebas sporozoans zooflagellates ```

Answer 39

sporozoans

Question 40

``` 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 ```

Answer 40

dinoflagellates

Question 41

``` which protists use flagella for locomotion? cellular slime molds ciliates euglenoids zooflagellates both euglenoids and zooflagellates ```

Answer 41

both euglenoids and zooflagellates

Question 42

``` which of these is a component of phytoplankton and supports aquatic food chains via its photosynthesis? sporozoans/apicomplexans diatoms brown algae amoebas slime molds ```

Answer 42

diatoms

Question 43

``` 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 ```

Answer 43

green algae

Question 44

``` Which of the following is an important recycler of nutrients (decomposer) in its ecosystem slime molds sporozoans/apicomplexans cyanobacteria viruses green algae ```

Answer 44

slime molds