Question

bsc 1005 exam 3, fall 2025
started: dec 4 at 8:32am
quiz instructions
question 57
humans belong to the phylum ______.
○ chordates
○ echinoderms
○ arthropods
○ mollusks

Explanation:

In biological classification, humans are vertebrates. Vertebrates are a sub - group of the phylum Chordata. Chordates are characterized by having a notochord (at some stage of development), a dorsal nerve cord, pharyngeal slits, and a post - anal tail. Echinoderms (e.g., starfish) have a different body plan with radial symmetry as adults. Arthropods (e.g., insects, crustaceans) have an exoskeleton and jointed appendages. Mollusks (e.g., snails, clams) have a soft body often protected by a shell.

Answer:

chordates