Q. Which of the following characters is present essentially in chordates?
A) Ventral spinal chord
B) Dorsal heart
C) Pharyngeal gill slits
D) Blood flow in forward direction in ventral blood vessels
Explanation
Chordates at some time in their life history, exhibit the following three characters: Presence of notochord; notochord is a rod-like structure made up of chordal cells. Presence of dorsal tubular nerve cord. Presence of gill clefts during development.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.