BIOLOGY 1407 EXAM TWO (CHAPTER
27-30)
Protists are alike in that all are
- autotrophic
- eukaryotic
- unicellular
- monophyletic
- symbionts - Correct Answers -eukaryotic
The strongest evident for the endosymbiotic origin of eukaryotic organelles is the
similarity between extant prokaryotes and of which of the following?
- nuclei and chloroplasts
- cilia and mitochondria
- mitochondria and nuclei
- mitochondria and chloroplasts - Correct Answers -mitochondria and chloroplasts
Which organisms represent the common ancestor of all photosynthetic plastids found in
eukaryotes?
- autotrophic euglenoids
- diatoms
- dinoflagellates
- cyanobacteria
- red algae - Correct Answers -cyanobacteria
Which of these taxa contains species that produce potent toxins that can cause
extensive fish kills, contaminate shellfish, and poison humans?
- diplomonads
- autotrophic euglenids
- golden algae
- euglenids
- dinoflagellates - Correct Answers -dinoflagellates
Which of the following pairs of protists and their characteristics is mismatched?
- apicomplexans: internal parasites
- golden algae: planktonic producers
- euglenozoans: unicellular flagellates
, - ciliates: red tide organisms
- entamoebas: ingestive heterotrophs - Correct Answers -ciliates: red tide organisms (-
dinoflagellates)
Which process results in genetic recombination, but is separate from the process
wherein the population size of Paramecium increases?
- binary fission
- budding
- meiotic division
- mitotic division
- conjugation - Correct Answers -conjugation
The Irish potato famine was caused by an organism that belongs to which group?
- ciliates
- oomycetes
- diatoms
- apicomplexans
- dinoflagellates - Correct Answers -oomycetes
A large seaweed that floats freely on the surface of deep bodies of water would be
expected to lack which of the following?
- thalli
- bladders
- blades
- holdfasts
- gel-forming polysaccharides - Correct Answers -holdfasts
What makes certain red algae appear red?
- They contain the pigment bacteriorhodopsin.
- They live in warm coastal waters.
- They possess pigments that reflect and transmit red light.
- They lack chlorophyll.
- They use red light for photosynthesis. - Correct Answers -They possess pigments that
reflect and transmit red light.
The largest seaweeds belong to which group?
- red algae
- green algae
- brown algae
- golden algae - Correct Answers -brown algae
Which taxon of eukaryotic organisms is thought to be directly ancestral to the plant
kingdom?
- apicomplexans
- foraminiferens
- radiolarians
27-30)
Protists are alike in that all are
- autotrophic
- eukaryotic
- unicellular
- monophyletic
- symbionts - Correct Answers -eukaryotic
The strongest evident for the endosymbiotic origin of eukaryotic organelles is the
similarity between extant prokaryotes and of which of the following?
- nuclei and chloroplasts
- cilia and mitochondria
- mitochondria and nuclei
- mitochondria and chloroplasts - Correct Answers -mitochondria and chloroplasts
Which organisms represent the common ancestor of all photosynthetic plastids found in
eukaryotes?
- autotrophic euglenoids
- diatoms
- dinoflagellates
- cyanobacteria
- red algae - Correct Answers -cyanobacteria
Which of these taxa contains species that produce potent toxins that can cause
extensive fish kills, contaminate shellfish, and poison humans?
- diplomonads
- autotrophic euglenids
- golden algae
- euglenids
- dinoflagellates - Correct Answers -dinoflagellates
Which of the following pairs of protists and their characteristics is mismatched?
- apicomplexans: internal parasites
- golden algae: planktonic producers
- euglenozoans: unicellular flagellates
, - ciliates: red tide organisms
- entamoebas: ingestive heterotrophs - Correct Answers -ciliates: red tide organisms (-
dinoflagellates)
Which process results in genetic recombination, but is separate from the process
wherein the population size of Paramecium increases?
- binary fission
- budding
- meiotic division
- mitotic division
- conjugation - Correct Answers -conjugation
The Irish potato famine was caused by an organism that belongs to which group?
- ciliates
- oomycetes
- diatoms
- apicomplexans
- dinoflagellates - Correct Answers -oomycetes
A large seaweed that floats freely on the surface of deep bodies of water would be
expected to lack which of the following?
- thalli
- bladders
- blades
- holdfasts
- gel-forming polysaccharides - Correct Answers -holdfasts
What makes certain red algae appear red?
- They contain the pigment bacteriorhodopsin.
- They live in warm coastal waters.
- They possess pigments that reflect and transmit red light.
- They lack chlorophyll.
- They use red light for photosynthesis. - Correct Answers -They possess pigments that
reflect and transmit red light.
The largest seaweeds belong to which group?
- red algae
- green algae
- brown algae
- golden algae - Correct Answers -brown algae
Which taxon of eukaryotic organisms is thought to be directly ancestral to the plant
kingdom?
- apicomplexans
- foraminiferens
- radiolarians
