Use the Following Information to Answer the Question

question 80

Multiple Choice

Use the following information to answer the question.
The phylum Cycliophora was discovered in 1995. They are 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 saclike 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.
Which of these, if discovered among cycliophorans, would cause the most confusion concerning our current understanding of cycliophoran taxonomy?

• A) if the ciliated feeding ring is a lophophore
• B) if embryos are diploblastic
• C) if the body cavity is actually a pseudocoelom
• D) if the organisms show little apparent cephalization

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Definitions:

Multiple Effects

The outcome or consequences that arise from a single cause, which can impact different systems or functions within an organism or environment.

Epistatic Gene

A gene that can interfere with the expression of other genes, altering the phenotypic outcome and creating variations in traits.

Dominant

Referring to an allele or a gene that expresses its phenotype even in the presence of a recessive allele of the same gene.

Genotype

The genetic makeup of an organism consisting of all the DNA sequences (genes) it possesses, determining specific traits.