Which among the following is incorrect about chordata?
A. They have paired muscles
B. Post anal tail must be present in chordates
C. Their notochord vanishes after certain period of time
D. Pharyngeal gill slits are present
Answer:B
Which among the following is incorrect about chordata?
A. They have paired muscles B. Post anal tail must be present in chordates C. Their notochord vanishes after certain period of time D. Pharyngeal gill slits are present