Question 6
Which of these is NOT a true statement ?
Select one :
a . All chordates are vertebrates .
b . All vertebrates are chordates .
c . Tunicates and lancelets are invertebrate chordates .
d . Echinoderms and chordates are deuterostomes .
e . Sea squirts are invertebrate chordates .
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Question 7
Which of the following is NOT a unique characteristic of chordates at some time in their life history ?
Select one :
a . a dorsal notochord
b . a ventral hollow nerve cord
c . pharyngeal pouches
d . gill clefts