What are the unifying characteristics of Gnathifera? Are these characteristics present in all members of the group? Is there a need for them to be placed in this group? Why or why not? 2. Account for the success of parasitic flatworms. Cite specific strategies to support your answer.

What are the unifying characteristics of Gnathifera? Are these characteristics present in all members of the group? Is there a need for them to be placed in this group? Why or why not? 2. Account for the success of parasitic flatworms. Cite specific strategies to support your answer.

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter31: Sponges, Cnidarians, Ctenophores, And Protostomes

Section: Chapter Questions

Problem 10TYU

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Concept explainers

Parasitic infections

A parasite is an organism that lives in the body of another organism and obtains food at the expense of the host. There are two kinds of parasites they are internal and external. An internal parasite lives inside another organism and is known as endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite.

Question

1. What are the unifying characteristics of Gnathifera? Are these characteristics present in all members of the group? Is there a need for them to be placed in this group? Why or why not?

2. Account for the success of parasitic flatworms. Cite specific strategies to support your answer.

Definition Definition A phylum of organisms also known as "flatworms". They are dorsoventrally flattened from head to tail. They are invertebrate, soft-bodied, acoelomate, unsegmented and have bilateral symmetry.

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