Examlex
Which of the following is a good source of carbohydrates?
Endoskeleton
An internal support structure of an organism, typical of vertebrates, providing physical support and protection for the body.
Urochordates
A subphylum of chordates; includes the tunicates.
Vertebrates
Animals that possess a backbone or spinal column, including fishes, amphibians, reptiles, birds, and mammals.
Hemichordata
A phylum of marine animals that share some traits with chordates, such as a dorsal nerve cord, but have distinct features like a stomochord.
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