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Describe the unique morphological characteristics of amphisbaenians and explain how these differ from snakes.

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Amphisbaenians, also known as worm lizar...

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Give support to the contention that the traditional class "Reptilia" is paraphyletic.If it is paraphyletic,what would you do to "fix" the situation?

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The traditional class "Reptilia" is cons...

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In turtles,the ribs are fused to the dorsal portion of the shell,called the _________.

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To separate a limbless (glass) lizard from a real snake,what could you look for?


A) Ear openings on the lizard, missing in snakes
B) Rough scales on lizards, smooth scales on snakes
C) Lizards at night, snakes in the daytime
D) Lizards in trees, snakes on the ground
E) All of the choices are differences between lizards and snakes

F) C) and D)
G) B) and C)

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Snakes that have special heat-sensitive pits on their heads are called ______ ______.

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Amniotes arose from the ____________ during the early Carboniferous.


A) Anthracosaurs
B) Anaspids
C) Diapsids
D) Lepidosaurs
E) Synapsids

F) A) and E)
G) A) and D)

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Nonavian reptiles that lay shelled eggs with development occurring outside the mother's body are __________.

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Discuss the two distinct views of reptile-bird-mammal classification held by cladists and evolutionary phylogeneticists.Since the "family tree" that they would draw is the same,clarify what classification concept(s)is controversial.

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Cladists and evolutionary phylogeneticis...

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For reproduction,a sea turtle


A) reverts to amphibian strategies and lays eggs in the water.
B) must return to shore to lay eggs on land.
C) retains the eggs until they hatch, or is ovoviviparous.
D) has resorted to full viviparity.
E) None of the choices are correct.

F) A) and E)
G) A) and B)

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Which of the following is least related to the others?


A) Great Plains skink
B) Tokay gecko
C) Iguana
D) New Zealand tuatara
E) Gila monster

F) A) and D)
G) A) and C)

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Which association of lineages and eventual derived groups is NOT correct?


A) Anaspids-turtles
B) Diapsids-all "reptilian" groups except turtles
C) Lepidosaurs-only extinct ichthyosaurs and pterodons
D) Synapsids-mammals
E) Archosaurs-dinosaurs, crocodilians, and birds

F) A) and D)
G) A) and E)

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The scales of nonavian reptiles are derived from the ________.

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Outline the biological contributions of the Reptilia.What advances do they exhibit over the Amphibia?

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The biological contributions of the Rept...

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Since a turtle's shell essentially immobilizes the ribs,how does the turtle breathe?


A) A turtle resorts to the amphibian system of positive pressure breathing.
B) The turtle has such a low metabolic rate that all oxygen requirements can be met by passive absorption without ventilation mechanisms.
C) The turtle wags its tail to change the volume within the shell and assist ventilation.
D) The turtle draws its shoulder girdle back to exhale and contracts limb flank muscles to inhale.
E) The ribs are allowed a small amount of leeway to move; rhythmic compression of the carapace on the plastron accomplishes this.

F) C) and D)
G) B) and D)

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Discuss the probable parental care of the dinosaurs.What kinds of evidence are used to support this claim?

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The probable parental care of dinosaurs ...

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The anapsid skull is characterized by


A) two pairs of openings separated by a bony arch.
B) a single pair of openings and a bony arch.
C) no temporal openings and the skull roofed with dermal bone.
D) three pairs of openings to accommodate the nerves from an expanding sensory system.
E) a beak-like process that associates the turtles and the birds.

F) A) and B)
G) None of the above

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What is the form of snake movement that allows it to move in a narrow passage,extending forward while bracing S-shaped loops against the sides of the passageway?


A) Rectilinear movement
B) Sidewinding
C) Lateral undulation
D) Concertina movement
E) None of the choices are correct

F) B) and D)
G) A) and E)

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Describe sex determination in the Crocodilia.Speculate on the evolution of such a system.

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In Crocodilia, the sex determination sys...

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Crocodiles have a complete secondary palate that allows them to


A) cool off in hot weather by "gaping".
B) breathe while the mouth is filled with water or food.
C) smell the animal that they have seized.
D) make loud mating calls.
E) detect the warmth of prey.

F) A) and D)
G) B) and E)

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Draw and label a simple cladogram or phylogenetic tree and describe the traits turtles possess that are different from the other reptilian groups.

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A cladogram or phylogenetic tree for rep...

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