Question

Which of the following features are shared and best explains the close phylogenetic relationship between a starfish and a shark? Group of answer choices
Complete alimentary canals
Presence of a notochord
Dioecious species
Pharyngeal slits
Deuterostome development

Answer 1

It is the developement of deuterostomes because the animals that are deuterostomes are including those of the phyla Echinodermata (e.g., starfish, sea urchins), Chordata (e.g., sea squirts, lancelets, and vertebrates), Chaetognatha (e.g., arrowworms), and Brachiopoda (e.g., lamp shells). This includes vertebrates, so yes that’s how sharks and starfish are related.