Question

What are the different classes under phylum Chordata? Give examples for each.

Answer 1

1. The organisms under the phylum Chordata are characterized by the presence of a notochord (flexible rod-like structure), which later develops into a vertebral column.
2. Notochord appears in the embryonic stage and in adults is converted to the backbone.
3. The different classes under phylum ‘Chordata’ are as follows:
   • Pisces – Fish
   • Amphibia – Frogs
   • Reptilia – Crocodiles
   • Aves – Birds
   • Mammalia – Humans