The Phylum Cycliophora Was Discovered in 1995

question 79

Multiple Choice

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 moult (though their host does) , and their embryos undergo spiral cleavage.
-Basing your inferences on information in the paragraph, to which clades should cycliophorans belong?

• A) Eumetazoa and Bilateria
• B) Eumetazoa and Lophotrochozoa
• C) Deuterostomia and Ecdysozoa
• D) Deuterostomia and Lophotrochozoa

---

Definitions:

Marginal Benefit (MB) Curve

A graphical representation that shows the additional satisfaction or utility a consumer receives from consuming one more unit of a good or service.

Pollution Abatement

Actions or measures taken to reduce, control, or eliminate pollution and its negative effects on the environment.

Consumer Tastes

Preferences or desires of consumers regarding certain products or services, which can influence buying behavior and market trends.

Externalities

The cost or benefit that affects a party who did not choose to incur that cost or benefit, affecting third parties outside the transaction.