Suppose that you swam in a lake and you encountered very small animals (less than 3 mm) that had cilia on one side of the body and scales on another. Which animal is it most likely that encountered?

Question

Quizplus · Accepted Answer

The description matches that of a "hairy back" or more formally known as a ctenophore, specifically belonging to the group Platyctenida. These marine animals are characterized by having cilia (used for movement) and often have a varying degree of covering, which can include scales or other structures on different parts of their body. Ribbon worms, snails, and leeches do not match the description of having cilia on one side and scales on another.

Suppose That You Swam in a Lake and You Encountered