Q. The following are the statements about non-chordates: A. Pharynx is perforated by gill slits. B. Notochord is absent. C. Central nervous system is dorsal. D. Heart is dorsal if present. E. Post anal tail is absent. Choose the most appropriate answer from the options given below:
A) B, D and E only
B) B, C and D only
C) A and C only
D) A, B and D only
Explanation
[Solution by Claude - not from source] Per the NCERT comparison table, non-chordates have no notochord, a ventral CNS, no gill slits, a dorsal heart (if present) and no post-anal tail. So B, D and E. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.