Multiple ChoiceWhich of the following characteristics is common to both cnidarians and sponges?655views
Multiple ChoiceWhich of the following features is characteristic of the poriferan (sponge) body plan or life history? 1329views
Multiple ChoiceWhich type of cnidarians exist only in the polyp form throughout their life cycle?551views
Multiple ChoiceThe choanocyte of a sponge and the nematocyst of a cnidarian both function in __________. 1850views