Biology 11th Edition by Gerald Audesirk,Teresa Audesirk,Bruce Byers

Exercise 11

Three major groups within the mollusks are the twoshelled clams and scallops called ______________; the foot-crawling snails and slugs called ______________; and the tentacled squid and octopuses called ______________. Members of the largest animal phylum are called ______________. Three important groups within this phylum are the six-legged, often flying ______________; the eight-legged spiders and mites called ______________; and the mostly aquatic ______________.