Which term describes a shell valve in mollusks?

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Prepare for the IB Marine Science SL Exam. Use flashcards and multiple-choice questions with detailed explanations. Master marine ecosystems, ocean currents, and biological resources for success!

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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