e. a post-anal tail
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Question 8
Both echinoderms and chordates are deuterostomes, this means that
Select one:
a. They have a similar development in their embryonic stages.
b. They both have eyes that have retinas.
c. They both start with radial symmetry in their early embryonic stages.
d. They both use calcium based endoskeletons.
e. They are both invertebrates.
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Question 9
Non-vertebrate chordates, tunicates and lancelets, differ from other chordates in that
Select one:
a. They do not have a notochord.
b. They have gills while other chordates have lungs.
c. They do not have jaws while all other chordates do have them.