Which term includes snails, clams, and octopuses?

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Study for the Academic Decathlon Science Exam. Prepare with interactive quizzes featuring multiple choice questions, complete with hints and thorough explanations. Elevate your science skills and get ready to excel on the test!

Multiple Choice

Which term includes snails, clams, and octopuses?

Explanation:
In biology, many animals are grouped into a phylum that contains all related classes. Snails, clams, and octopuses all belong to the same phylum, Mollusca. Snails are gastropods, clams are bivalves, and octopuses are cephalopods, so each is a different class within that phylum. The term that includes all of them is mollusk, the broad category for the entire group. The other terms point to smaller groups: a gastropod covers only snails and their relatives; a cephalopod covers octopuses and their relatives; a bivalve covers clams and their close relatives. So the best answer is mollusk.

In biology, many animals are grouped into a phylum that contains all related classes. Snails, clams, and octopuses all belong to the same phylum, Mollusca. Snails are gastropods, clams are bivalves, and octopuses are cephalopods, so each is a different class within that phylum. The term that includes all of them is mollusk, the broad category for the entire group. The other terms point to smaller groups: a gastropod covers only snails and their relatives; a cephalopod covers octopuses and their relatives; a bivalve covers clams and their close relatives. So the best answer is mollusk.

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