A student observes a wormlike organism crawling about on dead organic matter.Later,the organism sheds its outer covering.One possibility is that the organism is a larval insect (like a maggot).However,it might be a member of the phylum ,and one way to distinguish between the two possibilities is by looking for .

Question

A student observes a wormlike organism crawling about on dead organic matter.Later,the organism sheds its outer covering.One possibility is that the organism is a larval insect (like a maggot).However,it might be a member of the phylum ________,and one way to distinguish between the two possibilities is by looking for ________.