Hemichordata is a phylum of marine deuterostome animals, generally considered the sister group of the echinoderms. Here you can take an online test on this group. There is a set of 15 questions and each question has four alternative answers. After selecting right answer for each question you need to click on show results. You can get it instantly and summary page will show you the the answers you have selected and right answers as well for you. Good luck!