Which of the following traits is shared by all vertebrates at least in some developmental stages except the lampreys notochord vertebrae cartilaginous skeleton cranium head mouth with jaws ID: 441366
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Slide1
The Origin and Evolution of VertebratesSlide2
Which of the following traits is shared by all vertebrates, at least in some developmental stages, except the lampreys?
notochord
vertebraecartilaginous skeletoncranium (head)mouth with jawsSlide3
Which of the following traits is shared by all vertebrates, at least in some developmental stages, except the lampreys?
notochord
vertebraecartilaginous skeletoncranium (head)mouth with jawsSlide4
When early
systematists
distinguished Chondrichthyes (cartilaginous fish) from Osteichthyes (bony fish), it was not clear exactly when bony skeletons first appeared in the vertebrates. Which of these suggests that a reduction of bone in Chondrichthyes is a derived condition that emerged after the origin of bony skeletons?
All fish except
Agnatha
have jaws.
Chondrichthyes
and
Osteichthyes have paired fins and lateral lines.Traces of bone tissue are found in living and fossil Chondrichthyes.The cartilage skeleton of Chondrichthyes is impregnated with calcium.Chondrichthyes do not have swim bladders, as do many Osteichthyes.Slide5
When early
systematists
distinguished Chondrichthyes (cartilaginous fish) from Osteichthyes (bony fish), it was not clear exactly when bony skeletons first appeared in the vertebrates. Which of these suggests that a reduction of bone in Chondrichthyes is a derived condition that emerged after the origin of bony skeletons?
All fish except
Agnatha
have jaws.
Chondrichthyes
and
Osteichthyes have paired fins and lateral lines.Traces of bone tissue are found in living and fossil Chondrichthyes.The cartilage skeleton of Chondrichthyes is impregnated with calcium.Chondrichthyes do not have swim bladders, as do many Osteichthyes.Slide6
Which of these correctly describes phylogenetic relationships among birds, mammals, and reptiles?
Birds share the closest common ancestor with dinosaurs.
Reptiles and birds, but not mammals, are amniotes.Mammals evolved from therapsid reptiles after the fall of the dinosaurs.
Birds and mammals are more closely related to each other than either group is to crocodilian reptiles.
Among living species in the group we call reptiles, turtles and snakes are most closely related to each other.Slide7
Which of these correctly describes phylogenetic relationships among birds, mammals, and reptiles?
Birds share the closest common ancestor with dinosaurs.
Reptiles and birds, but not mammals, are amniotes.Mammals evolved from therapsid reptiles after the fall of the dinosaurs.
Birds and mammals are more closely related to each other than either group is to crocodilian reptiles.
Among living species in the group we call reptiles, turtles and snakes are most closely related to each other.Slide8
birds
mammals
reptilesnone of the aboveWhich of the following groups soon outcompeted amphibians on land due to their watertight skin and watertight eggs?Slide9
birds
mammals
reptilesnone of the aboveWhich of the following groups soon outcompeted amphibians on land due to their watertight skin and watertight eggs?Slide10
Which of the following chordate groups has all four key chordate characteristics as an adult?
lancelets
tunicatesfrogshumansSlide11
Which of the following chordate groups has all four key chordate characteristics as an adult?
lancelets
tunicatesfrogshumansSlide12
Which of the following
Osteichthyan
structures allows bony fishes to control their buoyancy using gases from their blood?operculumlateral line systemswim bladder
cloacaSlide13
Which of the following
Osteichthyan
structures allows bony fishes to control their buoyancy using gases from their blood?operculumlateral line systemswim bladder
cloacaSlide14
Early vertebrate fossils called
Conodonts
can be identified by all of the following features except:a
n
internal skeleton composed of
cartilage
large
eyes for locating
preybarbed hooks at the anterior end of their mouthsslender, jawless bodiesan inner ear with two semicircular canalsSlide15
Early vertebrate fossils called
Conodonts
can be identified by all of the following features except:a
n
internal skeleton composed of
cartilage
large
eyes for locating
preybarbed hooks at the anterior end of their mouthsslender, jawless bodiesan inner ear with two semicircular canalsSlide16
One of the reasons that the catch of cod (
Gadus morhua
) in the northwest Atlantic plummeted to 5% of its historic maximum was:industrial scale fishingglobal coolingrestrictions on cod fisheryChytrid fungal diseaseSlide17
One of the reasons that the catch of cod (
Gadus morhua
) in the northwest Atlantic plummeted to 5% of its historic maximum was:industrial scale fishingglobal coolingrestrictions on cod fisheryChytrid fungal diseaseSlide18
Which of the following statements is not correct about the lateral line system?
It
can be found in aquatic gnathostomesIt is used in digestionLateral line organs form a row along each side of the bodyLateral line organs are sensitive to vibrationSlide19
Which of the following statements is not correct about the lateral line system?
It
can be found in aquatic gnathostomesIt is used in digestionLateral line organs form a row along each side of the bodyLateral line organs are sensitive to vibrationSlide20
Archaeopteryx
differed from modern birds in that it
had feathered wingsflew well at high speedscould not take off from a standing positionhad airfoil wings with contoured feathersSlide21
Archaeopteryx
differed from modern birds in that it
had feathered wingsflew well at high speedscould not take off from a standing positionhad airfoil wings with contoured feathers