Question

differences and similarities between sponges and worms

Answer 1

worms are easily identified by the many visible rings that make up their bodies.  Over 9,000 species of segmented worms have been identified.  Many marine species are found on the sea bottom but are not restricted to it.   Sponges are filter-feeding, colonial animals which live together as a larger unit.  They appear to be plants but are in fact invertebrate animals.  Unique to the animal world, sponges have canals throughout their bodies which open to the surrounding water, allowing both oxygen and food particles to reach each sponge.