1. All chordates have (a) a. Backbone b. Jaws c. Notochord d. Both b and c 2. A
ID: 134395 • Letter: 1
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1. All chordates have (a) a. Backbone b. Jaws c. Notochord d. Both b and c 2. A lamprey, a shark, a lizard, and a rabbit share all the following characteristics except Pharyngeal slits in the embryo or adult b. a. Vertebrate Hinged jaws d. c. A dorsal, hollow nerve cord A post-anal tail e. 3. T/F Birds have highly efficient circulatory systems 4. The lancelet pharynx functions in a. Respiration b. Filter-feeding c. Reproduction d. Both a and b 5. All of the following are lineages of mammals except a. Turtles b. Monotremes c. Marsupials d. Placental mammals 6. Vertebrate jaws evolved from a. Gill supports b. Ribs c. Scales d. teeth Which if the following correctly lists possible ancestors of humans from the oldest to t most recent 7. a. Homo erectus, Australopithecus, Homo habilis b. Australopithecus, Homo habilis, Homo erectus c. Australopithecus, Homo erectus, Homo habilis d. Homo ergaster, Homo erectus, Homo neanderthalensis e. Homo habilis, Homo erectus, Australopithecus 8. 9. T/F Birds are ectothermic Lampreys and sharks both have a. Jaws b. A bony skeleton c. A cranium d. A swim bladder e. A four-chambered heart f. lungs 10. Which of these is not a member of the anthropoids a. Chimpanzee b. Ape c. Tarsier d. Human e. New World monkeyExplanation / Answer
Answer=
1.All chordates have
C]Notochord
Explaination- There are 4 defining characteristics of all chordates i.e.A notochord,a dorsal hollow nerve cord,pharyngeal slits and a post-anal tail.
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2.A lamprey,a shark,a lizard and a rabbit share all of the following characteristics except
c]Hinged jaw
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-3]Birds have highly efficient circulatory system
TRUE
Explaination-birds have very efficient circulatory system.
it consists of a four chambered heart,and blood vessels.
With each beat or stroke of the heart ,a large volume of blood is carried throughout the birds body by vessels called arteries.
Blood is then return to the heart by vessels called veins.
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4.Lancelet pharynx functions in
d]Both a and b
explaination-both a and b means in respiration and filter feeding.
pharynx receives water,entraps food in mucus and responsible for some gas exchange.
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