Multiple Choice
In lab class, a plasmodial slime mold is used as a demonstration organism. One of the students does not understand why this organism is not considered multicellular. How would you explain it to her?
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27. Protists
Eukaryotic Supergroups: Exploring Protist Diversity
Back27. Protists
Eukaryotic Supergroups: Exploring Protist Diversity
- Multiple ChoiceWhich of the following organisms is commercially harvested to extract algin from their cell walls?716views
- Multiple ChoiceWhich of these groups includes unicellular organisms that, due to the structure of their cell walls, can withstand pressures equal to the pressure under each leg of a table supporting an elephant?748views
- Multiple ChoiceWhat role do diatoms play in the global carbon balance affecting global warming?1892views1rank
- Multiple ChoiceWhich of the following groups of algae is/are most closely related to land plants?1206views
- Multiple ChoiceOn some areas of the seafloor, one could observe an "ooze" that is hundreds of meters thick. What creates this ooze?766views
- Multiple ChoiceMany species of red algae are adapted to deeper water due to the fact that __________.849views
- Textbook Question
The most important primary producers in marine ecosystems are ___________.
1026views - Textbook Question
Which group is incorrectly paired with its description?
a. Diatoms—important producers in aquatic communities
b. Red algae—eukaryotes that acquired plastids by secondary endosymbiosis
c. Apicomplexans—unicellular parasites with intricate life cycles
d. Diplomonads—unicellular eukaryotes with modified mitochondria
1179views - Textbook Question
What is the role of PEP carboxylase in C4 and CAM plants?
a. It fixes CO2 into an organic acid.
b. It produces ATP for the Calvin cycle.
c. It replaces rubicso in the Calvin cycle.
d. It releases CO2 from organic acids.
1048views - Textbook Question
According to the phylogeny, which protists are in the same eukaryotic supergroup as plants?
a. Green algae
b. Dinoflagellates
c. Red algae
d. Both A and C
712views - Textbook QuestionHow can dinoflagellates be harmful to humans?a. They are transmitted by mosquitoes and cause malaria.b. They produce toxins that can be absorbed by clams and other shellfish which, when eaten by people, can lead to paralytic shellfish poisoning.c. They cause amoebic dysentery which leads to severe diarrhea and dehydration.d. They are transmitted by tsetse flies and cause 'sleeping sickness.'1983views
- Textbook Question
How can dinoflagellates be harmful to humans? a. They are transmitted by mosquitoes and cause malaria. b. They produce toxins that can be absorbed by clams and other shellfish which, when eaten by people, can lead to paralytic shellfish poisoning. c. They cause amoebic dysentery which leads to severe diarrhea and dehydration. d. They are transmitted by tsetse flies and cause 'sleeping sickness.'
445views - Textbook Question
Which of the following members of the SAR supergroup is incorrectly paired with its clade?
a. Stramenopiles—brown algae
b. Alveolates—parasites such as Plasmodium
c. Alveolates—dinoflagellates
d. Rhizaria—diatoms
1301views - Textbook Question
Based on the phylogenetic tree in Figure 28.2, which of the following statements is correct?
a. The most recent common ancestor of Excavata is older than that of SAR.
b. The most recent common ancestor of SAR is older than that of Unikonta.
c. The most basal (first to diverge) eukaryotic supergroup cannot be determined.
d. Excavata is the most basal eukaryotic supergroup.
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