BIOLOGY 1407 EXAM TWO (CHAPTER
27-30) QUESTIONS WITH VERIFIED
ANSWERS
/. Protists are alike in that all are
- autotrophic
- eukaryotic
- unicellular
- monophyletic
- symbionts - Answer-✅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 - Answer-✅mitochondria and chloroplasts
/.Which organisms represent the common ancestor of all photosynthetic plastids found
in eukaryotes?
- autotrophic euglenoids
- diatoms
- dinoflagellates
- cyanobacteria
- red algae - Answer-✅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 - Answer-✅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 - Answer-✅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 - Answer-✅conjugation
/.The Irish potato famine was caused by an organism that belongs to which group?
- ciliates
- oomycetes
- diatoms
- apicomplexans
- dinoflagellates - Answer-✅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 - Answer-✅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. - Answer-✅They possess pigments that reflect
and transmit red light.
/.The largest seaweeds belong to which group?
- red algae
- green algae
- brown algae
- golden algae - Answer-✅brown algae
/.Which taxon of eukaryotic organisms is thought to be directly ancestral to the plant
kingdom?
- apicomplexans
- foraminiferens
- radiolarians
- golden algae
27-30) QUESTIONS WITH VERIFIED
ANSWERS
/. Protists are alike in that all are
- autotrophic
- eukaryotic
- unicellular
- monophyletic
- symbionts - Answer-✅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 - Answer-✅mitochondria and chloroplasts
/.Which organisms represent the common ancestor of all photosynthetic plastids found
in eukaryotes?
- autotrophic euglenoids
- diatoms
- dinoflagellates
- cyanobacteria
- red algae - Answer-✅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 - Answer-✅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 - Answer-✅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 - Answer-✅conjugation
/.The Irish potato famine was caused by an organism that belongs to which group?
- ciliates
- oomycetes
- diatoms
- apicomplexans
- dinoflagellates - Answer-✅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 - Answer-✅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. - Answer-✅They possess pigments that reflect
and transmit red light.
/.The largest seaweeds belong to which group?
- red algae
- green algae
- brown algae
- golden algae - Answer-✅brown algae
/.Which taxon of eukaryotic organisms is thought to be directly ancestral to the plant
kingdom?
- apicomplexans
- foraminiferens
- radiolarians
- golden algae
