Use the Following Information to Answer the Question(s)below

Use the following information to answer the question(s) below.
The most recently discovered phylum in the animal kingdom (1995) is the phylum Cycliophora.It includes three species of tiny organisms that live in large numbers on the outsides of the mouthparts and appendages of lobsters.The feeding stage permanently attaches to the lobster via an adhesive disk and collects scraps of food from its host's feeding by capturing the scraps in a current created by a ring of cilia.The body is sac-like and has a U-shaped intestine that brings the anus close to the mouth.Cycliophorans are coelomates,do not molt (though their host does) ,and their embryos undergo spiral cleavage.
-If harboring large populations of cycliophorans neither helps nor harms their lobster hosts,then cycliophorans can be properly considered to be ________.
1) parasites
2) mutualists
3) commensals
4) symbionts
5) endosymbionts

A) 1 and 4
B) 3 and 4
C) 2 and 5
D) 3 and 5

Correct Answer:

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