8.1 Unit 8 Exam

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cc_profilecc.multiple_choice.v0p1The internal skeleton of vertebratesallows vertebrates to grow larger than invertebrates.plays an important role in the digestive system.allows vertebrates to carry out asexual reproduction.plays an important role in mate selection.1100cc_profilecc.multiple_choice.v0p1Adult spongeshave body walls with many pores.possess true tissues.are active swimmers.use stinging cells to capture prey.5100cc_profilecc.multiple_choice.v0p1To which group do roundworms belong?annelidsnematodesPlatyhelminthesArthropoda10100cc_profilecc.multiple_choice.v0p1Both arthropods and annelids havejointed appendages.protective exoskeletons.hydrostatic skeletons.segmented bodies.16100cc_profilecc.multiple_choice.v0p1Spiders, scorpions, and mites belong to the subphylumArthropoda.Crustacea.Hexapoda.Chelicerata.20100cc_profilecc.multiple_choice.v0p1All of the following are arthropods <i>except</i>spiders.sea lilies.crabs.centipedes.22100cc_profilecc.multiple_choice.v0p1The exoskeleton of an insectdoes not have any muscles attached to it.is moved by muscles that are attached to the inside of the exoskeleton.is thickest where the joints of the appendages are located.is moved only by muscles attached to the wings.26100cc_profilecc.multiple_choice.v0p1Which of the following is <i>not </i>a modification of arthropod appendages?piercing, sucking mouthpartsantennaelarge pincersexcretory tubules32100cc_profilecc.multiple_choice.v0p1Characteristics of arthropods <i>do not </i>includesegmentation.a chitinous exoskeleton.jointed appendages.ossicles.36100cc_profilecc.multiple_choice.v0p1The appendages that scorpions and spiders use to capture and handle their prey are calledchelipeds.walking legs.pedipalps.uropods.39100cc_profilecc.multiple_choice.v0p1In incomplete metamorphosis, the young insect hatches from the egg as a(n)pupa.chrysalis.caterpillar.nymph.44100cc_profilecc.multiple_choice.v0p1Interconnected canals and hollow tube feet work together in a sea star’sdigestive system.respiratory system.circulatory system.water-vascular system.48100cc_profilecc.multiple_choice.v0p1Jaws probably evolved from thepectoral fins of jawless fishes.pharyngeal pouches of sharks and rays.paired pelvic fins of jawless fishes.gill arches of jawless fishes.52100cc_profilecc.multiple_choice.v0p1Mammals arose from early reptiles calledsauropods.theropods.therapsids.placoderms.55100cc_profilecc.multiple_choice.v0p1All fishes have a(n)internal skeleton.external skeleton.cartilaginous skeleton.bony skeleton.57100cc_profilecc.multiple_choice.v0p1Jawless fishes includelampreys and sharks.sharks and rays.hagfishes and coelacanths.lampreys and hagfishes.64100cc_profilecc.multiple_choice.v0p1In amphibians, gases are exchanged through lung breathing and through theheart.air bladder.lateral line system.skin.68100cc_profilecc.multiple_choice.v0p1The skin of a reptile ismoist and watertight.moist and thin.dry and nearly watertight.dry and permeable to water.71100cc_profilecc.multiple_choice.v0p1The geographical range of reptiles is limited bylength of day.moisture.temperature.topography.75100cc_profilecc.multiple_choice.v0p1Which of the following is a reptilian adaptation to living on land?external fertilizationendothermic temperature regulationrespiration through gillsthe amniotic egg80100cc_profilecc.multiple_choice.v0p1Some reptiles are oviparous. This means their youngare nourished by a placenta.are born from eggs that hatch within the mother’s body.hatch from eggs laid outside the mother’s body.continue to develop in the mother’s pouch.83100cc_profilecc.multiple_choice.v0p1The skeletons of birds arelightweight and rigid.lightweight and flexible.solid and rigid.solid and flexible.85100cc_profilecc.multiple_choice.v0p1Mammals whose offspring remain inside the mother until development is complete are calledplacental mammals.monotremes.marsupials.echidnas.89100cc_profilecc.multiple_choice.v0p1Egg-laying mammals areoviparous.viviparous.ovoviviparous.marsupials.93100cc_profilecc.multiple_choice.v0p1The duckbill platypus and echidna are monotremes.marsupials.placental mammals.reptiles.97100cc_profilecc.essay.v0p1qmd_computerscoredNoOf the four characteristics that define chordates, list the ones that are present in humans only in the embryo.100cc_profilecc.essay.v0p1qmd_computerscoredNoThrough which opening in a sponge does water exit its body?100cc_profilecc.essay.v0p1qmd_computerscoredNoIn what way is an exoskeleton vital to an animal’s movement?100cc_profilecc.essay.v0p1qmd_computerscoredNoWhat was the major contributing factor that led to the success of amphibians on land?100cc_profilecc.essay.v0p1qmd_computerscoredNoDescribe how feathers are specialized for flight.100cc_profilecc.essay.v0p1qmd_computerscoredNoWhat are the key characteristics of the three groups of mammals?100cc_profilecc.essay.v0p1qmd_computerscoredNoA flatworm cannot eat when food is already in its gut. Why?100cc_profilecc.essay.v0p1qmd_computerscoredNoWhat is a possible evolutionary advantage of complete metamorphosis in insects? Consider how the needs of the larva and the adult are met.100cc_profilecc.essay.v0p1qmd_computerscoredNoReptiles are found in nearly every kind of habitat on Earth, with the exception of Antarctica and a few remote islands. Explain why.100cc_profilecc.essay.v0p1qmd_computerscoredNoSupport the statement “Crocodilians resemble birds more than they resemble other reptiles.”100cc_profilecc.essay.v0p1qmd_computerscoredNoThe right and left sides of a bird’s heart are completely separated, so oxygen-rich blood never mixes with oxygen-poor blood. Why is this complete separation necessary for birds?100