Question

Which of the following group of characters is present in all chordates in some or other stage in their life [CPMT 1982]
A) Mammary glands, hair and gill slits
B) Notochord, gill slits and dorsal tubular nervous system
C) Notochord, scales and dorsal tubular nervous system
D) Gill slits, vertebral column and notochord

Answer 1

Notochord, scales and dorsal tubular nervous system
➡️ characters is present in all chordates in some or other stage in their life