Which of the following is a key feature of the phylum Chordata?

Which of the following is a key feature of the phylum Chordata?

Step 1: Understand what a phylum is. A phylum is a group of related animals that share certain characteristics.
Step 2: Learn about the phylum Chordata. This phylum includes animals like fish, birds, mammals, and reptiles.
Step 3: Identify the key feature of Chordata. The main characteristic that defines this group is the presence of a notochord.
Step 4: Know what a notochord is. A notochord is a flexible rod-like structure that provides support and is found in the early development of all chordates.
Step 5: Remember that all vertebrates (animals with a backbone) are part of the Chordata phylum, and they all have a notochord at some stage of their life.

No concepts available.