Question

Choose the correct answers from the alternatives given.
Which of the following phyla contains vertebrates?

• A. Arthropoda
• B. Chordata
• C. Annelida
• D. Mollusca

Answer 1

The correct option is B Chordata

In sub-phylum Vertebrata, the notochord present in embryos gets replaced by a cartilaginous or bony vertebral column in adults. Thus, it can be said that all vertebrates are chordates but all chordates are not vertebrates. Both chordates and vertebrates contain a nerve cord, pharyngeal gill slits, and post-anal tail at some points of their life. The main difference between chordates and vertebrates is that some chordates do not have a vertebral column whereas all vertebrates have a vertebral column.

So, the correct option is, 'Chordata'.