The Internal Skeleton of Echinoderms Is Made of Calcium-Stiffened ____

question 21

Multiple Choice

The internal skeleton of echinoderms is made of calcium-stiffened ____ that develop from mesoderm.

• A) ampullae
• B) ossicles
• C) radial canals
• D) ring canals
• E) madreporites

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Definitions:

Recorded Over

The process of recording new information or data on top of previously stored information, typically used in the context of audio or video media.

Similar Items

Objects or concepts that share common features or characteristics, making them alike in some way.

Interference Theory

A theory that explains forgetting in the human memory as the result of competing information that interferes with the retention or retrieval of other information.

Replacement

The act of substituting one thing for another, whether it's a physical object, a person in a job role, or a concept.