Question 1

The term &#34;plankton&#34; ____.&#10;A) &#8203;refers to a taxonomic division of algae&#10;B) &#8203;is a common term for microscopic organisms that drift or swim weakly in water&#10;C) &#8203;includes only multicellular forms&#10;D) &#8203;refers to small aquatic plants&#10;E) &#8203;would apply to large brown algae

Accepted Answer

Plankton refers to a diverse group of organisms that are typically small and weakly swimming or drifting in water. They can be both unicellular and multicellular, but the common characteristic is their inability to swim strongly against even weak currents. Plankton includes both plants (phytoplankton) and animals (zooplankton).

Question 2

Red tides and extensive fish kills are caused by population blooms of ____.&#10;A) &#8203;Euglena&#10;B) &#8203;specific dinoflagellates&#10;C) &#8203;diatoms&#10;D) &#8203;Plasmodium&#10;E) &#8203;fish

Accepted Answer

Red tides and extensive fish kills are commonly caused by population blooms of specific dinoflagellates, such as Karenia brevis.

Question 3

What occurs when a photosynthetic protist is taken up by a heterotrophic protist and evolves into a chloroplast?&#8203;&#10;A) &#8203;multicellularity&#10;B) &#8203;primary endosymbiosis&#10;C) &#8203;colonialism&#10;D) &#8203;chloroplasty&#10;E) &#8203;secondary endosymbiosis

Accepted Answer

Secondary endosymbiosis occurs when a photosynthetic protist is engulfed by a heterotrophic protist, leading to the evolution of a chloroplast.

Question 4

Which group is most closely related to fungi?&#8203;&#10;A) &#8203;radiolarians&#10;B) &#8203;stramenopiles&#10;C) &#8203;alveolates&#10;D) &#8203;choanoflagellates&#10;E) &#8203;oomycetes

Accepted Answer

Choanoflagellates are the closest living relatives to animals, and fungi are more closely related to animals than to any other group, making choanoflagellates the most closely related group to fungi among the options given.

Question 5

In ciliates, the ____ is used for ____.&#10;A) &#8203;gullet; digestion&#10;B) &#8203;cilia; flexible support&#10;C) &#8203;pellicle; digestion&#10;D) &#8203;contractile vacuole; food gathering&#10;E) &#8203;pellicle; water balance

Accepted Answer

In ciliates, the gullet is a specialized structure used for the digestion of food. Cilia are used for movement, the pellicle is a protein layer that provides shape and support to the cell, contractile vacuoles are responsible for water regulation, and none of the listed structures are directly involved in food gathering.

Question 6

Which group is most distantly related to green algae?&#8203;&#10;A) &#8203;ciliates&#10;B) &#8203;dinoflagellates&#10;C) &#8203;diplomonads&#10;D) &#8203;apicomplexans&#10;E) &#8203;diatoms

Accepted Answer

Diplomonads are a group of protists that are more distantly related to green algae compared to the other groups listed, which are more closely related to each other within the SAR (Stramenopiles, Alveolates, and Rhizaria) supergroup.

Question 7

The causative agents of Chagas disease and African sleeping sickness are ____.&#10;A) &#8203;trypanosomes&#10;B) &#8203;euglenoids&#10;C) &#8203;hydrogenosomes&#10;D) &#8203;diplomonads&#10;E) &#8203;parabasalids

Accepted Answer

The causative agents of Chagas disease and African sleeping sickness are trypanosomes.

Question 8

In a life cycle that exhibits ____, the only diploid cell is the zygote.&#10;A) &#8203;alternation of generations&#10;B) &#8203;haploid-dominance&#10;C) &#8203;heterotrophism&#10;D) &#8203;endosymbiosis&#10;E) &#8203;diploid-dominance

Accepted Answer

In haploid-dominance, the organism spends most of its life cycle in the haploid state, and the only diploid cell is the zygote, which undergoes meiosis to return to the haploid state.

Question 9

Figure 21.11&#10;&#8203;&#10;  &#10;The organism in the accompanying figure belongs to which group?&#8203;&#10;A) &#8203;excavates&#10;B) &#8203;alveolates&#10;C) &#8203;stramenopiles&#10;D) &#8203;green algae&#10;E) &#8203;rhizarians

Accepted Answer

The answer of Figure 21.11&#10;&#8203;&#10;  &#10;The organism in the...

Question 10

Figure 21.9&#10;  &#10;What is NOT a characteristic of radiolarians?&#10;A) &#8203;They have perforated shells of calcium carbonate.&#10;B) &#8203;They form part of the plankton.&#10;C) &#8203;They use pseudopods for feeding.&#10;D) &#8203;They have vacuoles that impart buoyancy.&#10;E) &#8203;They are heterotrophic protists.

Accepted Answer

Radiolarians have shells made of silica, not calcium carbonate.

Question 11

Protists cause four of the following diseases. Which one is the exception??&#8203;&#10;A) &#8203;dysentery&#10;B) &#8203;neurotoxic shellfish poisoning&#10;C) &#8203;malaria&#10;D) &#8203;AIDS&#10;E) &#8203;trichomonas infections of the reproductive tract

Accepted Answer

The answer of Protists cause four of the following diseases....

Question 12

Figure 21.5&#10;  &#10;Four of the following are true of euglenoids. Which statement is false?&#10;A) &#8203;Many move by pseudopods.&#10;B) &#8203;Many contain chloroplasts.&#10;C) &#8203;Many absorb nutrients from their environment in a heterotrophic manner.&#10;D) &#8203;Their cell body is surrounded by a pellicle.&#10;E) &#8203;They use a contractile vacuole to maintain water balance.

Accepted Answer

The answer of Figure 21.5&#10;  &#10;Four of the following...

Question 13

What type of cells do the apicomplexan parasite Plasmodium infect?&#8203;&#10;A) &#8203;blood only&#10;B) &#8203;liver only&#10;C) &#8203;brain only&#10;D) &#8203;both blood and liver&#10;E) &#8203;blood, liver, and brain

Accepted Answer

The answer of What type of cells do the apicomplexan...

Question 14

Which feature is shared by euglenoids and kinetoplastids?&#8203;&#10;A) &#8203;an eyespot&#10;B) flagellated&#10;C) &#8203;photoautotrophy&#10;D) &#8203;parasitic existence&#10;E) &#8203;marine and freshwater habitats

Accepted Answer

The answer of Which feature is shared by euglenoids and...

Question 15

Figure 21.11&#10;&#8203;&#10;  &#10;What feature is common to all the alveolates?&#8203;&#10;A) &#8203;autotrophy&#10;B) &#8203;lung-like sacs used for respiration&#10;C) &#8203;bioluminescence&#10;D) &#8203;complex life cycle with two hosts&#10;E) &#8203;membrane-bound sacs beneath the plasma membrane

Accepted Answer

The answer of Figure 21.11&#10;&#8203;&#10;  &#10;What feature is common...

Question 16

Four of the statements about malaria are true. Which one is FALSE?&#8203;&#10;A) &#8203;It is caused by an evolving organism.&#10;B) &#8203;It is transmitted from person to person by the bite of a mosquito.&#10;C) &#8203;Its mortality rate is linked to the allele for sickle cell anemia.&#10;D) &#8203;Its greatest mortality rate is in Africa.&#10;E) Its occurrencein the United States can be traced to ineffective mosquito spraying in the southern states.

Accepted Answer

The answer of Four of the statements about malaria are...

Question 17

Figure 21.9&#10;  &#10;The organism in the accompanying figure belongs to which group?&#8203;&#10;A) &#8203;excavates&#10;B) &#8203;alveolates&#10;C) &#8203;stramenopiles&#10;D) &#8203;green algae&#10;E) rhizarians

Accepted Answer

The answer of Figure 21.9&#10;  &#10;The organism in the...

Question 18

Figure 21.5&#10;  &#10;The organism in the accompanying figure belongs to which group?&#10;A) &#8203;excavates&#10;B) &#8203;alveolates&#10;C) &#8203;stramenopiles&#10;D) &#8203;green algae&#10;E) &#8203;amoebozoans

Accepted Answer

The answer of Figure 21.5&#10;  &#10;The organism in the...

Question 19

Four of the following are shared characteristics of parabasalids and diplomonads. Which is the exception?&#10;A) &#8203;heterotrophy&#10;B) &#8203;flagella&#10;C) &#8203;oxygen-poor or anaerobic habitats&#10;D) &#8203;abundant mitochondria&#10;E) &#8203;presence of a pellicle

Accepted Answer

The answer of Four of the following are shared characteristics...

Question 20

The ____ gives structure to many unwalled, single-celled protists.&#10;A) &#8203;contractile vacuole&#10;B) &#8203;pellicle&#10;C) &#8203;Golgi body&#10;D) &#8203;endoplasmic reticulum&#10;E) &#8203;nucleus

Accepted Answer

The answer of The ____ gives structure to many unwalled,...

Question 21

Figure 21.21&#10;  &#10;Which pigment(s) is/are characteristic of chlorophytes?&#10;A) &#8203;chlorophyll a&#10;B) &#8203;phycobilins&#10;C) &#8203;chlorophyll b&#10;D) fucoxanthin&#10;E) &#8203;chlorophylls a and b

Accepted Answer

The answer of Figure 21.21&#10;  &#10;Which pigment(s) is/are characteristic...

Question 22

The red algae are classified as ____.&#10;A) &#8203;rhodophytes&#10;B) &#8203;chlorophytes&#10;C) &#8203;phaeophytes&#10;D) &#8203;bryophytes&#10;E) &#8203;pterophytes

Accepted Answer

The answer of The red algae are classified as ____.&#10;A)...

Question 23

Land plants are thought to be most closely related to the ____.&#10;A) &#8203;chlorophyte algae&#10;B) &#8203;red algae&#10;C) &#8203;charophyte algae&#10;D) &#8203;brown algae&#10;E) &#8203;euglenoids

Accepted Answer

The answer of Land plants are thought to be most...

Question 24

Figure 21.15&#10;&#8203;&#10;   &#10;Refer to the accompanying figure for questions .&#10;At which stage does the Plasmodium (malaria) parasite reproduce asexually and mature into merozoites?&#8203;&#10;A) &#8203;A&#10;B) &#8203;B&#10;C) &#8203;C&#10;D) &#8203;D&#10;E) &#8203;E

Accepted Answer

The answer of Figure 21.15&#10;&#8203;&#10;   &#10;Refer to the...

Question 25

Figure 21.15&#10;&#8203;&#10;   &#10;Refer to the accompanying figure for questions .&#10;Within one or two weeks after infection with Plasmodium, ruptured liver cells release _____ and cellular debris into the host's bloodstream, causing fever and weakness characteristic of malaria.&#10;A) &#8203;sporozoites&#10;B) &#8203;merozoites&#10;C) &#8203;Anopheles mosquitoes&#10;D) &#8203;gametocytes&#10;E) zygotes

Accepted Answer

The answer of Figure 21.15&#10;&#8203;&#10;   &#10;Refer to the...

Question 26

Most freshwater algae belong to which group?&#8203;&#10;A) &#8203;red algae&#10;B) &#8203;green algae&#10;C) &#8203;brown algae&#10;D) &#8203;golden algae&#10;E) &#8203;blue-green algae

Accepted Answer

The answer of Most freshwater algae belong to which group?&#8203;&#10;A)...

Question 27

Portion of Figure 21.17&#10;&#8203;&#10;   &#10;Refer to the accompanying figure for questions&#10;The organism shown in the accompanying figure belongs to the ____ group.&#10;A) &#8203;kinetoplastids&#10;B) &#8203;diplomonads&#10;C) &#8203;green algae&#10;D) &#8203;red algae&#10;E) &#8203;brown algae

Accepted Answer

The answer of Portion of Figure 21.17&#10;&#8203;&#10;   &#10;Refer...

Question 28

Figure 21.17A&#10;  &#10;The kelp shown in the accompanying figure represents the ____ stage in its life cycle.&#10;A) &#8203;spore-bearing&#10;B) &#8203;gamete-forming&#10;C) &#8203;haploid&#10;D) &#8203;motile&#10;E) &#8203;feeding

Accepted Answer

The answer of Figure 21.17A&#10;  &#10;The kelp shown in...

Question 29

Figure 21.21&#10;  &#10;Gametes are formed at stage ____.&#10;A) &#8203;A&#10;B) &#8203;B&#10;C) &#8203;C&#10;D) &#8203;D&#10;E) &#8203;E

Accepted Answer

The answer of Figure 21.21&#10;  &#10;Gametes are formed at...

Question 30

Portion of Figure 21.17&#10;&#8203;&#10;   &#10;Refer to the accompanying figure for questions&#10;Which letter points to the counterpart of a stem in a flowering plant?&#10;A) &#8203;A&#10;B) &#8203;B&#10;C) &#8203;C&#10;D) &#8203;D&#10;E) &#8203;E

Accepted Answer

The answer of Portion of Figure 21.17&#10;&#8203;&#10;   &#10;Refer...

Question 31

Choanoflagellates are most closely related to the ____.&#10;A) &#8203;land plants&#10;B) &#8203;animals&#10;C) &#8203;mold&#10;D) &#8203;bacteria&#10;E) &#8203;slime molds

Accepted Answer

The answer of Choanoflagellates are most closely related to the...

Question 32

Four of the following are true about the amoebozoans. Which one is the exception?&#8203;&#10;A) &#8203;They are shape shifters.&#10;B) &#8203;They include the amoebas.&#10;C) &#8203;They are the closest known relatives of animals.&#10;D) &#8203;They include species that are able to form pseudopods.&#10;E) &#8203;They include the slime molds.

Accepted Answer

The answer of Four of the following are true about...

Question 33

Figure 21.17A&#10;  &#10;Four of the following are true about water molds. Which one is the exception?&#8203;&#10;A) &#8203;Water mold is responsible for the Irish potato famine.&#10;B) &#8203;Some species are aquatic parasites.&#10;C) &#8203;Most act as decomposers.&#10;D) &#8203;Their filaments are composed of haploid cells.&#10;E) &#8203;They are heterotrophs.

Accepted Answer

The answer of Figure 21.17A&#10;  &#10;Four of the following...

Question 34

Choanoflagellates are ____.&#10;A) &#8203;heterotrophs&#10;B) &#8203;chemoautotrophs&#10;C) &#8203;autotrophs&#10;D) &#8203;phototrophs&#10;E) &#8203;halotrophs

Accepted Answer

The answer of Choanoflagellates are ____.&#10;A) &#8203;heterotrophs&#10;B) &#8203;chemoautotrophs&#10;C) &#8203;autotrophs&#10;D) &#8203;phototrophs&#10;E)...

Question 35

Diatoms are used for four of the following. Which one is the exception?&#8203;&#10;A) &#8203;biofuels&#10;B) &#8203;ink&#10;C) &#8203;filters&#10;D) &#8203;cleaners&#10;E) &#8203;insecticides

Accepted Answer

The answer of Diatoms are used for four of the...

Question 36

Chloroplasts of red algae may have evolved from ancient endosymbiotic ____.&#10;A) &#8203;cyanobacteria&#10;B) &#8203;dinoflagellates&#10;C) &#8203;apicomplexans&#10;D) &#8203;archaeans&#10;E) &#8203;nitrifying bacteria

Accepted Answer

The answer of Chloroplasts of red algae may have evolved...

Question 37

Red algae ____.&#10;A) &#8203;are primarily marine organisms&#10;B) &#8203;are thought to have developed from green algae&#10;C) &#8203;contain xanthophylls as their main accessory pigments&#10;D) &#8203;are mostly unicellular&#10;E) &#8203;survive only in shallow water

Accepted Answer

The answer of Red algae ____.&#10;A) &#8203;are primarily marine organisms&#10;B)...

Question 38

Cellular slime molds can be distinguished from plasmodial slime molds on the basis of ____.&#10;A) &#8203;reproductive structures&#10;B) &#8203;spore formation&#10;C) &#8203;number of nuclei per cell&#10;D) &#8203;slime trails&#10;E) &#8203;food requirements

Accepted Answer

The answer of Cellular slime molds can be distinguished from...

Question 39

Four of the following statements are true about stramenopiles. Which statement is FALSE?&#8203;&#10;A) &#8203;They are filamentous heterotrophs.&#10;B) &#8203;Some species are unicellular.&#10;C) &#8203;They include diatoms and red algae.&#10;D) &#8203;Most are photosynthetic.&#10;E) &#8203;Their chloroplast structure suggests evolution by secondary endosymbiosis.

Accepted Answer

The answer of Four of the following statements are true...

Question 40

The production of light by an organism is called ____.&#10;A) &#8203;autophotoproduction&#10;B) &#8203;bioluminescence&#10;C) &#8203;luminarianism&#10;D) &#8203;autoillumination&#10;E) &#8203;bioillumination

Accepted Answer

The answer of The production of light by an organism...

Question 41

Are humans responsible for neurotoxic shellfish poisoning? Why or why not?&#8203;

Accepted Answer

The answer of Are humans responsible for neurotoxic shellfish poisoning?...

Question 42

&#8203;Select the best choice for the following statements using the five groups listed below.&#10;a.&#8203;apicomplexans&#10;b.&#8203;amoebozoans&#10;c.&#8203;euglenoids&#10;d.&#8203;dinoflagellates&#10;e.&#8203;trypanosomes&#10;The malarial parasite Plasmodium is a member of this group.

Accepted Answer

The answer of &#8203;Select the best choice for the following...

Question 43

&#8203;Select the best choice for the following statements using the five groups listed below.&#10;a.&#8203;apicomplexans&#10;b.&#8203;amoebozoans&#10;c.&#8203;euglenoids&#10;d.&#8203;dinoflagellates&#10;e.&#8203;trypanosomes&#10;All members of this group are parasitic alveolates.

Accepted Answer

The answer of &#8203;Select the best choice for the following...

Question 44

__________ are heterotrophs that grow as a mesh of absorptive filaments. Some are plant pathogens.

Accepted Answer

The answer of __________ are heterotrophs that grow as a...

Question 45

__________ and __________ are single-celled heterotrophs with a secreted shell.

Accepted Answer

The answer of __________ and __________ are single-celled heterotrophs with...

Question 46

Euglenoids live in freshwater; a(n) __________ rids them of excess water.

Accepted Answer

The answer of Euglenoids live in freshwater; a(n) __________ rids...

Question 47

__________ are aquatic heterotrophs and autotrophs with a cellulose covering.

Accepted Answer

The answer of __________ are aquatic heterotrophs and autotrophs with...

Question 48

&#8203;Select the best choice for the following statements using the five groups listed below.&#10;a.&#8203;apicomplexans&#10;b.&#8203;amoebozoans&#10;c.&#8203;euglenoids&#10;d.&#8203;dinoflagellates&#10;e.&#8203;trypanosomes&#10;These move by means of pseudopods.

Accepted Answer

The answer of &#8203;Select the best choice for the following...

Question 49

Some protists have complex life cycles and change between the haploid and diploid state. This process is called __________ of _________.

Accepted Answer

The answer of Some protists have complex life cycles and...

Question 50

&#8203;Select the best choice for the following statements using the five groups listed below.&#10;a.&#8203;apicomplexans&#10;b.&#8203;amoebozoans&#10;c.&#8203;euglenoids&#10;d.&#8203;dinoflagellates&#10;e.&#8203;trypanosomes&#10;Neurotoxin from some members of this group can kill humans.

Accepted Answer

The answer of &#8203;Select the best choice for the following...

Question 51

In nutrient-rich water, photosynthetic protists may undergo population explosions known as __________.

Accepted Answer

The answer of In nutrient-rich water, photosynthetic protists may undergo...

Question 52

&#8203;Select the best choice for the following statements using the five groups listed below.&#10;a.&#8203;apicomplexans&#10;b.&#8203;amoebozoans&#10;c.&#8203;euglenoids&#10;d.&#8203;dinoflagellates&#10;e.&#8203;trypanosomes&#10;This group includes the diatoms.

Accepted Answer

The answer of &#8203;Select the best choice for the following...

Question 53

Describe the relationship of protists to the major groups of eukaryotes.

Accepted Answer

The answer of Describe the relationship of protists to the...

Question 54

&#8203;Select the best choice for the following statements using the five groups listed below.&#10;a.&#8203;apicomplexans&#10;b.&#8203;amoebozoans&#10;c.&#8203;euglenoids&#10;d.&#8203;dinoflagellates&#10;e.&#8203;trypanosomes&#10;The slime molds are members of this group.

Accepted Answer

The answer of &#8203;Select the best choice for the following...

Question 55

Why is malaria such an effective disease?

Accepted Answer

The answer of Why is malaria such an effective disease?...

Question 56

&#8203;Select the best choice for the following statements using the five groups listed below.&#10;a.&#8203;apicomplexans&#10;b.&#8203;amoebozoans&#10;c.&#8203;euglenoids&#10;d.&#8203;dinoflagellates&#10;e.&#8203;trypanosomes&#10;Paramecium belongs to this group.

Accepted Answer

The answer of &#8203;Select the best choice for the following...

Question 57

__________ are single-celled and mostly or entirely heterotrophic.

Accepted Answer

The answer of __________ are single-celled and mostly or entirely...

Question 58

&#8203;Select the best choice for the following statements using the five groups listed below.&#10;a.&#8203;apicomplexans&#10;b.&#8203;amoebozoans&#10;c.&#8203;euglenoids&#10;d.&#8203;dinoflagellates&#10;e.&#8203;trypanosomes&#10;Chagas disease and African sleeping sickness are caused by members of this group.

Accepted Answer

The answer of &#8203;Select the best choice for the following...

Question 59

&#8203;Select the best choice for the following statements using the five groups listed below.&#10;a.&#8203;apicomplexans&#10;b.&#8203;amoebozoans&#10;c.&#8203;euglenoids&#10;d.&#8203;dinoflagellates&#10;e.&#8203;trypanosomes&#10;These possess an eyespot for detecting light needed for photosynthesis.

Accepted Answer

The answer of &#8203;Select the best choice for the following...

Question 60

&#8203;Select the best choice for the following statements using the five groups listed below.&#10;a.&#8203;apicomplexans&#10;b.&#8203;amoebozoans&#10;c.&#8203;euglenoids&#10;d.&#8203;dinoflagellates&#10;e.&#8203;trypanosomes&#10;The common amoeba, Amoeba proteus, is a member of this group.

Accepted Answer

The answer of &#8203;Select the best choice for the following...

Question 61

Why can red algae grow at deeper depths of water than green algae?

Accepted Answer

The answer of Why can red algae grow at deeper...

Deck 21: Protists - the Simplest Eukaryotes