During a biological expedition, a newly discovered animal is found to possess a central nervous system that is ventral, solid, and double. Based on this observation, which of the following anatomical features is most likely to be true for this organism?

Step-by-step solution

The presence of a central nervous system that is ventral, solid, and double is a defining characteristic of non-chordates. Since the organism is a non-chordate, it will exhibit other non-chordate features. In non-chordates, if a heart is present, it is situated dorsally. The presence of a post-anal tail, pharyngeal gill slits, and a ventrally situated heart are all characteristic features of chordates, not non-chordates. Answer: If a heart is present, it is situated dorsally.