Exemplar Problems

Question:

“All vertebrates are chordates but all chordates are not vertebrates”. Justify the statement.

Answer:

The statement “All vertebrates are chordates but all chordates are not vertebrates” is justified because vertebrates are a specific subgroup within the larger phylum Chordata. Chordata includes animals that possess certain key characteristics like a notochord, dorsal nerve cord, post-anal tail, and pharyngeal slits at some point in their life cycle. Vertebrates are a more specialized subgroup of chordates characterized by the presence of a vertebral column (backbone) made of bone or cartilage. Therefore, all vertebrates share the characteristics of chordates, but not all chordates have vertebral columns.