Question

Do hemichordats have notochord? Please give a detailed explanation

Answer 1

The phylum Hemichordata includes around 90 described species of enteropneusts (acorn worms) and around 30 described pterobranchs. Like chordates, hemichordates are deuterostomes with pharyngeal gill slits and most have a dorsal (and sometimes hollow) nerve cord. However, they lack a notochord. As adults, all or nearly all hemichordates are benthic (bottom-dwelling) marine animals.