The Skeleton of Sea Urchins Consists of Ten Sets of Closely

question 11

Multiple Choice

The skeleton of sea urchins consists of ten sets of closely fitting plates and is called a(n)

• A)test.
• B)exoskeleton.
• C)cuticle.
• D)tunic.
• E)spine.

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Definitions:

Probability

A measure of the likelihood that an event will occur, quantified as a number between 0 and 1.

Cards

Pieces of heavy paper or thin cardboard, often rectangular, used for writing, playing games, or as a tool for various statistical teaching methods.

Postmarked Bismarck

Indicating that an item of mail was stamped in Bismarck, reflecting the time and location of mailing.

North Dakota

A U.S. state located in the Upper Midwest and Northern regions, known for its vast landscapes and natural resources.