Q: Lampreys possess a large round sucker, lined with teeth, that surrounds the mouth and is used to feed on what?


Read this paragraph and choose the correct option from the provided answers:

Like hagfish, lampreys also lack scales, but they have fins and a partial backbone. The most striking feature of lampreys is a large round sucker, lined with teeth, that surrounds the mouth (see Figure below ). Lampreys use their sucker to feed on the blood of other fish species.

 Choices:

- parasites

- herbivores

- marrow

- blood


A:
blood