Biology 1202 Exam 3 Questions and
Answers A+ Graded (2025)
Supergroups .of .Kingdom .Protista .- .CORRECT .ANSWER--Excavates .
-Chromalveolates .
-Rhizarians .
-Archaeplastids .
-Unikontes
Two .major .clades .of .the .excavate .supergroup .- .CORRECT .ANSWER--
diplomonads .
-parabasalids
Characteristics .of .excavates .- .CORRECT .ANSWER--move .via .flagella .
-feeding .grove .
-heterotrophic .and .have .modified .mitochondria
clades .of .the .excavates .- .CORRECT .ANSWER--diplomonads .and .parabasalids
.(largest)
-euglenozoans
Characteristics .of .diplomonads .- .CORRECT .ANSWER--free .living .and .symbiotic
.
-two .nuclei .
-multiple .flagella
Pathogenic .member .of .the .diplomonads .- .CORRECT .ANSWER-Giardia- .causes
.diarrhea .and .is .contracted .by .drinking .untreated .water.
Characteristics .of .parabasalids .- .CORRECT .ANSWER--anaerobic .
-all .known .species .are .symbiotic, .some .are .parasitic
Pathogenic .member .of .the .parabasalids .- .CORRECT .ANSWER-Trichomanas
.vaginalis- .STD, .males .are .often .asymptomatic
Characteristics .of .euglenozoans .- .CORRECT .ANSWER--distinct .mitochondria .
-move .via .flagella .
-mixed .nutritional .methods(mixotrophic)
Major .groups .of .euglenozoans .- .CORRECT .ANSWER-euglenids .and
.kinetoplastids
, Characteristics .of .euglenids .- .CORRECT .ANSWER--most .are .freshwater
.dwelling .
-have .1-3 .flagella .
-primarily .photosynthetic, .but .can .switch .to .heterotrophic .in .the .dark .
-many .lack .a .rigid .cell .wall .
-have .a .photoreceptor .called .an ."eyespot"
Characteristics .of .kinetoplastids .- .CORRECT .ANSWER--single .flagellum .
-one .large .mitochondrion .
-both .free .living .and .symbiotic
Parasitic .member .of .the .kinetoplastids .- .CORRECT .ANSWER-trypanosoma
.which .causes .sleeping .sickness
How .are .the .chromalveolates .thought .to .have .arisen? .- .CORRECT .ANSWER-
through .the .secondary .endosymbiosis .of .red .algae
Two .major .clades .in .the .chromalveolate .supergroup .- .CORRECT .ANSWER-
stramenopiles .and .alveolates
Four .major .groups .of .stramenopiles .- .CORRECT .ANSWER--oomycetes(water
.molds)
-diatoms .
-brown .algae .
-golden .algae
Characteristics .of .oomycetes .- .CORRECT .ANSWER--cell .walls .are .made .of
.cellulose .
-cells .can .form .aggregated .colonies .
-filamentous .bodies .
-heterotrophic .decomposers
Member .of .the .oomycetes .that .carries .economical .importance .- .CORRECT
.ANSWER-downy .mildew
Characteristics .of .diatoms .- .CORRECT .ANSWER--freshwater .or .marine .dwelling
.
-photosynthetic .
-have .glass-like .shells .called ."tests" .which .are .perforated .to .allow .for .the
.exchange .of .substances
Characteristics .of .brown .algae .- .CORRECT .ANSWER--photosynthetic .
-marine .dwelling .
-deep .water .tidal .dwelling
-color .caused .by .accessory .pigments .
-cell .wall .has .added .polysaccharides .
-cells .can .form .aggregated .multicellular .colonies .
-giant .kelp .forest .
-most .have .gas .bladders .to .keep .them .extended .toward .the .surface
Answers A+ Graded (2025)
Supergroups .of .Kingdom .Protista .- .CORRECT .ANSWER--Excavates .
-Chromalveolates .
-Rhizarians .
-Archaeplastids .
-Unikontes
Two .major .clades .of .the .excavate .supergroup .- .CORRECT .ANSWER--
diplomonads .
-parabasalids
Characteristics .of .excavates .- .CORRECT .ANSWER--move .via .flagella .
-feeding .grove .
-heterotrophic .and .have .modified .mitochondria
clades .of .the .excavates .- .CORRECT .ANSWER--diplomonads .and .parabasalids
.(largest)
-euglenozoans
Characteristics .of .diplomonads .- .CORRECT .ANSWER--free .living .and .symbiotic
.
-two .nuclei .
-multiple .flagella
Pathogenic .member .of .the .diplomonads .- .CORRECT .ANSWER-Giardia- .causes
.diarrhea .and .is .contracted .by .drinking .untreated .water.
Characteristics .of .parabasalids .- .CORRECT .ANSWER--anaerobic .
-all .known .species .are .symbiotic, .some .are .parasitic
Pathogenic .member .of .the .parabasalids .- .CORRECT .ANSWER-Trichomanas
.vaginalis- .STD, .males .are .often .asymptomatic
Characteristics .of .euglenozoans .- .CORRECT .ANSWER--distinct .mitochondria .
-move .via .flagella .
-mixed .nutritional .methods(mixotrophic)
Major .groups .of .euglenozoans .- .CORRECT .ANSWER-euglenids .and
.kinetoplastids
, Characteristics .of .euglenids .- .CORRECT .ANSWER--most .are .freshwater
.dwelling .
-have .1-3 .flagella .
-primarily .photosynthetic, .but .can .switch .to .heterotrophic .in .the .dark .
-many .lack .a .rigid .cell .wall .
-have .a .photoreceptor .called .an ."eyespot"
Characteristics .of .kinetoplastids .- .CORRECT .ANSWER--single .flagellum .
-one .large .mitochondrion .
-both .free .living .and .symbiotic
Parasitic .member .of .the .kinetoplastids .- .CORRECT .ANSWER-trypanosoma
.which .causes .sleeping .sickness
How .are .the .chromalveolates .thought .to .have .arisen? .- .CORRECT .ANSWER-
through .the .secondary .endosymbiosis .of .red .algae
Two .major .clades .in .the .chromalveolate .supergroup .- .CORRECT .ANSWER-
stramenopiles .and .alveolates
Four .major .groups .of .stramenopiles .- .CORRECT .ANSWER--oomycetes(water
.molds)
-diatoms .
-brown .algae .
-golden .algae
Characteristics .of .oomycetes .- .CORRECT .ANSWER--cell .walls .are .made .of
.cellulose .
-cells .can .form .aggregated .colonies .
-filamentous .bodies .
-heterotrophic .decomposers
Member .of .the .oomycetes .that .carries .economical .importance .- .CORRECT
.ANSWER-downy .mildew
Characteristics .of .diatoms .- .CORRECT .ANSWER--freshwater .or .marine .dwelling
.
-photosynthetic .
-have .glass-like .shells .called ."tests" .which .are .perforated .to .allow .for .the
.exchange .of .substances
Characteristics .of .brown .algae .- .CORRECT .ANSWER--photosynthetic .
-marine .dwelling .
-deep .water .tidal .dwelling
-color .caused .by .accessory .pigments .
-cell .wall .has .added .polysaccharides .
-cells .can .form .aggregated .multicellular .colonies .
-giant .kelp .forest .
-most .have .gas .bladders .to .keep .them .extended .toward .the .surface
