Which one of the following is a matching set of a phylum and its three examples?
Correct answer: D. Mollusca-Loligo, Teredo and Octopus
- A. Porifera-Spongilla, Euplectella and Pennatula
- B. Cnidaria-Bonellia, Physalia and Aurelia
- C. Platyhelminthes-Planaria, Schistosoma and Enterobius
- D. Mollusca-Loligo, Teredo and Octopus
Explanation
Mollusca includes animals that have soft bodies, usually furnished with a shell. The body is often divided into a head with eyes or tentacles, a muscular foot, and a visceral mass housing the organs. Loligo (squid or sea arrow), Teredo (shipworm), and Octopus are some examples. In option (a), Spongilla and Euplectella belong to Porifera, but Pennatula (the sea pen or sea feather) belongs to Coelenterata. In option (b), Physalia and Aurelia belong to Cnidaria, but Bonellia belongs to the phylum Annelida. In option (c), Planaria and Schistosoma belong to Platyhelminthes, but Enterobius (pinworm) belongs to aschaleminthes.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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