At some stage of development, chordates possess
A) pharyngeal slits.
B) a hollow dorsal nerve cord.
C) a notochord.
D) pharyngeal slits and a hollow dorsal nerve cord.
E) All of the answers are correct.
Correct Answer:
Verified
Q6: The water vascular system is
A) coelomic in
Q7: The tube feet in echinoderms are extended
Q8: Excretion of nitrogenous wastes in Echinoderms is
Q9: The earliest larval stage of echinoderms
A) is
Q10: Chordates are so named because of their
A)
Q12: A structure found in lancelets (cephalochordates) but
Q13: All craniates have
A) a distinct head with
Q14: Vertebrae
A) are characteristic of all chordates.
B) are
Q15: Jawed vertebrates have jaws derived from
A) dermal
Q16: Many features unique to vertebrates develop from
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