Multiple choice

Which of the following members of porifera use spines for locomotion?

  1. Onychophorans

  2. Nematomorphs

  3. Priapulids

  4. Kinorhynchans

  5. Loriciferans
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D Correct answer
Explanation

Kinorhynchans are segmented, limbless animals with a body consisting of a head, neck and a trunk of eleven segments. Unlike some similar invertebrates they do not have external cilia, but instead have a number of spines along the body, plus up to seven circles of spines around the head. These spines are used for locomotion.

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