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Bio I - Ch 25 Review

QuestionAnswer
In some chordates, pharyngeal slits develop into gills.
A vertebrate is any chordate that has a backbone.
The two groups of invertebrate chordates are tunicates and lancelets.
In which of the following ways does a larval tunicate resemble an adult tunicate? method of feeding
Most fishes are characterized by each of the following EXCEPT [cartilaginous skeleton, scales, paired fins, gills] a cartilaginous skeleton.
In most fishes, the structures that are most important for obtaining oxygen from water are the gills.
The first vertebrates to evolve were fishes.
Which of the following structures are missing from many salamanders that live on land? [lungs, kidneys, legs, eyes] lungs
Blood flows through the body of a fish in a single
The organ that adjusts the buoyancy of many bony fishes is the swim bladder.
Suppose a fish is swimming upstream in total darkness. Which of the following would be most likely to help the fish sense aquatic predators that approach it from behind? its lateral line system
Modern jawless fishes include lampreys.
All fishes in the class Chondrichthyes are alike in the composition of their skeletons.
Which of the following is NOT a characteristic of most amphibians? [live on land as adults, breathe with lungs as adults, have moist skin that contains mucus secreting glands, have scales and claws]
Which feature distinguishes most fishes from most amphibians? scales
The first amphibians probably resembled lobe finned fishes, like the coelacanth.
At the end of the Cambrian Period, fossil evidence indicates that most amphibian species became extinct.
The eggs of amphibians can dry out easily because they do not have shells.
The invertebrate chordate that has all four chordate characteristics as an adult is the tunicate. _________________________ False, lancelet
An animal cannot be a chordate if it lacks a backbone. _________________________ False, vertebrate
The fins of fishes are used for protection. _________________________ False, movement
Individual segments of the backbone are called ____________________. vertebrae
Unlike an adult tunicate, an adult lancelet has a head region that contains a(an) ____________________. mouth
One basic characteristic of fishes is the presence of ____________________, which fishes use to obtain oxygen from water. gills
The skeletons of some ancient fishes were made of ____________________, which is softer and more flexible than bone. cartilage
The adaptation that greatly expanded the range of food sources available to early vertebrates was the evolution of ____________________. hinged jaws
If a vertebrate is aquatic as a larva and terrestrial as an adult, it is a(an) ____________________. amphibian
The Carboniferous Period is sometimes referred to as the “Age of ____________________.” Amphibians
One adaptation of amphibians for life on land is the presence of mucus secreting glands in the skin, which can help protect amphibians from _________________________.
A(n) ____________________ is a vertebrate with two sets of paired limbs that are modified as legs that can support the animal. tetrapod
Created by: tbillingsley
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