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Chordate Practice
1.) Members of phylum Chordata are called __chordates__.
2.) A chordate is an animal that has a dorsal, hollow ___nerve cord___; a notochord; ___pharyngeal
pouches___ pouches; and a ____post anal tail___
3.) The hollow nerve cord runs along the {FRONT or BACK} of the body. (circle one)
4.) Most chordates have a notochord as adults only. {TRUE or FALSE}
5.) Pharyngeal pouches may develop into gills in chordates such as __lancelets__ and ___fishes___.
Match the description on the left with its chordate characteristic.
a.) Notochord
b.) Tail
c.) Pharyngeal pouch
d.) Hollow nerve cord
6.) _d_ Connects nerves to internal organs, muscles & sense organs
7.) _a_ Long supporting rod located just below nerve cord
8.) _c_ Paired structure in throat region
9.) _b_ Contains bone and muscle
10.) Label the Chordate
dorsal nerve cord
notochord
mouth
post anal tail
anus
pharyngeal slits
11.) The dorsal, hollow nerve cord is called the ___spinal column or vertebral column___in vertebrates.
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12.) The notochord is replaced with ___backbone or vertebral column__ in vertebrates and is made up
of individual segments called ___vertebrae___.
13.) A vertebrate's backbone is part of an ___endoskeleton___.
14.) Look at pgs. 724/725. To which other vertebrate group are birds most closely related? __reptiles_
15.) The two groups of non-vertebrate chordates are ____tunicates___ and ___lancelets___
16.) Tunicates belong to subphylum ___urochordates___.
17.) Lancelets belong to subphylum ___cephalochordates___.
18.) What makes an adult lancelet different from the adult tunicate? ___definite head, symmetry,___
19.) What does a lancelet use its pharynx for? ___sucking in particles of food__
20.) Lancelets have a ___closed___ circulatory system.
21.) Lancelets have a true heart. {TRUE or FALSE}
Using arrows fit the following bubbles into the proper columns below.
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