Question

observing a bird with feathers, a beak, and a vertebrate structure, which major animal phylum does this creature likely belong to?
○ arthropoda
○ chordata
○ annelida
○ mollusca

Explanation:

To determine the animal phylum, we analyze each option:

• Arthropoda: Invertebrates with exoskeletons (e.g., insects), not vertebrates. Eliminate.
• Chordata: Includes vertebrates (animals with a backbone). Birds have feathers, beaks, and vertebral structures, so they belong here.
• Annelida: Segmented worms (e.g., earthworms), no vertebrae. Eliminate.
• Mollusca: Soft - bodied (e.g., snails), no vertebrae. Eliminate.

Answer:

B. Chordata