Why does sub-par mean bad when under par in golf is good? You make a good point, it is a strange one. But in this context par is meant to mean, the average, of the usual quality etc, so below par essentially means sub standard, and h â¦ as nothing to do with golf.
Tapeworms lack a mouth and a digestive tract. Describe the tapeworms. They are segmented, flat, have no digestive system, and absorb all nutrients through the tegument (no mouth).
Tapeworm Scolex. Tapeworms (class Cestoda) are a group of parasitic flatworms (phylum Platyhelminthes) that usually require two hosts, including an invertebrate as an intermediate. The more than 5,000 known species of cestodes are endoparasites, several of which are known to feed on humans.