Q. Which of the following groups of characters are confined exclusively to Chordates:
a. Notochord, ventral nerve cord, dorsal heart
b. Notochord, dorsal tutular nerve cord, pharyngeal slits
c. Notochord, dorsal tubular nerve cord open circulatory system
d. Notochord, double solid ventral nerve cord, red blood cells
No explanation is available for this question!
