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Cards In This Set
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What are the 4 chordate characteristics?
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Dorsal hollow nerve cordNotochordPharyngeal slitsMuscular post-anal tail
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Which of the 4 characteristics of chordates runs the length of chordate (anteriorly to posteriorly) on the dorsal side? becomes brain and spinal cord in vertebrates.
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Dorsal hollow nerve cord
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Which of the 4 characteristics of chordates is a flexible, supporting rod, runs the length of chordate, between dorsal hollow nerve cord and digestive tract? also forms part of vertebral column in vertebrates
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Notochord
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Which of the 4 characteristics of chordates are slits in the pharynx that develop into openings to outside of body for gas exchange? only seen during embryonic development in terrestrial vertebrates.
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Pharyngeal gill slits
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Which of the 4 characteristics of chordates is a tail posterior to the completion of the digestive tract (anus) ? only seen during embryonic development in apes (including humans).
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Muscular post-anal tail
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Which group of chordates are sessile marine filter feeders, have little resemblance to other chordates as adults, and their larval stage possesses all 4 chordate characteristics?
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Tunicates
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Of the chordata, what is the scientific name for Tunicates?
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Urochordata
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Which chordate group are free-swimming marine filter feeders, and exhibit all 4 chordate characteristics throughout their lives?
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Lancelets
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Of the chordata, what is the scientific name for Lancelets?
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Cephalochordata
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Which vertebrate group was the earliest vertebrate group on the planet, and are marine scavengers?
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Hag fishes (Myxinoidea)
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In hagfishes, they possess a skull but no vertebral column. what is their skull made out of ?
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Cartilage
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What is the scientific name for hagfishes?
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Myxinoidea
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What is the scientific name for Lampreys?
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Petromyzontoidea
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Which group of vertebrates were the first possess a vertebral column made of cartilage along with skull, and are aquatic ectoparasites?
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Lampreys
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In lampreys, what are aquatic ectoparasites?
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They suck the blood out of other fishes
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