Question

Which among the following characters are correct with respect to chordates?

• A. Absence of notochord
• B. Ventral nerve cord
• C. Paired gill pouches
• D. Coelomate

Answer 1

Answer: (C), (D)

The correct options are
C Paired gill pouches
D Coelomate

All the chordates possess the following characters:

• Notochord- It is a long rod like support structure. It runs along the back of the animal and separates the nervous tissue from the gut.
• Presence of dorsal hollow nerve cord- The nerve cord of chordates is always hollow. It lies dorsal to the notochord.
• Presence of paired gill pouches- All the chordates at some stage in their life, have a series of narrow openings, the gill slits.
• Triploblastic- These organisms consists of three germ layers: ectoderm, endoderm and mesoderm.
• Coelomates- These animals possess true coelom.