Which term describes a shell valve in mollusks?

Study for the IB Marine Science Standard Level Exam. Prepare with interactive quizzes and in-depth explanations. Use our resources to excel in your marine science knowledge!

Multiple Choice

Which term describes a shell valve in mollusks?

Explanation:
In mollusks, the shell is made up of pieces called valves, with each half of the shell being a valve. This term specifically names one half of a hinged shell, which is why it’s used to describe a shell valve. Sea Grass is a plant, Zooplankton are drifting animals, and Animal is too broad to describe a shell component—only valve refers to the shell piece itself.

In mollusks, the shell is made up of pieces called valves, with each half of the shell being a valve. This term specifically names one half of a hinged shell, which is why it’s used to describe a shell valve. Sea Grass is a plant, Zooplankton are drifting animals, and Animal is too broad to describe a shell component—only valve refers to the shell piece itself.

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