Copepods are a group of small invertebrates found in both marine and freshwater habitats. In 1963, Anraku and Omori published a paper on the relationship between the feeding habits of different species of copepods and the structure of their mouthparts. Which of the following would be a logical expectation in such a study?

Question

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Herbivorous copepods would require mandibles with grinding surfaces to process plant matter. Mandibles with sharp cutting edges would be more suited for carnivorous copepods that need to slice through prey. Choice A and D are incorrect because they suggest sharp cutting edges, which are not necessary for herbivorous copepods. Choice C is incorrect because herbivorous copepods still need to process their food, even if they do not catch prey.

Copepods Are a Group of Small Invertebrates Found in Both