The basic characteristic of chordates are-
A. Presence of a notochord and a nerve cord.
B. Presence of a nerve cord, notochord and gill left.
C. Presence of a nerve cord and gill cleft.
D. None of the above.
Answer:C
The basic characteristic of chordates are-
A. Presence of a notochord and a nerve cord. B. Presence of a nerve cord, notochord and gill left. C. Presence of a nerve cord and gill cleft. D. None of the above.