8.05 Week 8 Quiz

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cc_profilecc.multiple_choice.v0p1All vertebrates are classified in the phylumMammalia.Agnatha.Chordata.Reptilia.3100cc_profilecc.multiple_choice.v0p1The earliest vertebrates werefish.amphibians.mammals.reptiles.5100cc_profilecc.multiple_choice.v0p1A major difference between a hagfish and more evolved vertebrates is that itis protected by a thick bony shell.has a skeleton made of cartilage.does not have vertebrae.lays eggs that can develop out of water.11100cc_profilecc.multiple_choice.v0p1What four features do all chordates share at some point during development?notochord, hollow nerve cord, pharyngeal slits, and tailhollow nerve cord, jaws, tail, and pharyngeal slitstail, spinal cord, pharyngeal slits, and finsjaws, tail, fins, and notochord13100cc_profilecc.multiple_choice.v0p1Which term refers to an internal skeleton built of bone or cartilage?exoskeletonvertebraeendoskeletonnotochord19100cc_profilecc.multiple_choice.v0p1The gills of a fish serve what essential function?keep the fish stable in waterreturn blood to the hearttake in oxygen from waterprevent countercurrent flow23100cc_profilecc.multiple_choice.v0p1What structure did jaws evolve from?antennaegill archesfront legsnotochord26100cc_profilecc.multiple_choice.v0p1How did the development of jaws affect vertebrates?improved their ability to filter-feedgave them a huge advantage as predatorsenabled them to obtain nutrients from coralmade them more streamlined and thus faster30100cc_profilecc.multiple_choice.v0p1A sensory system used by fish to detect the movements of other fish in the water is called thecountercurrent flow.operculum.lateral line.swim bladder.35100cc_profilecc.multiple_choice.v0p1Which of the following characteristics helps a fish float higher or lower in the water?flattened bodylobe finsray finsswim bladder40100cc_profilecc.multiple_choice.v0p1A tetrapod is a vertebrate that hasfour limbs.extra gills.lateral lines.a swim bladder.41100cc_profilecc.multiple_choice.v0p1Where do caecilians live?underwateralong shorelinesin tropical treesunderground48100cc_profilecc.multiple_choice.v0p1Which animals make up the largest group of living amphibians?frogssalamanderslizardscaecilians49100cc_profilecc.multiple_choice.v0p1All amphibians need a source of water tobreathe.reproduce.feed.move around.54100cc_profilecc.multiple_choice.v0p1What process must tadpoles undergo to grow into terrestrial adults?fertilizationmetamorphosisphotosynthesisegg-hatching58100cc_profilecc.essay.v0p1qmd_computerscoredNoList two adaptations of amphibians and describe why each is important for life on land.100