Which Element Has the Atomic Number 12

question 54

Multiple Choice

Which element has the atomic number 12?

• A)Mg
• B)C
• C)B
• D)Na
• E)Be

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Definitions:

Hemocoel

Residual coelom found in arthropods, which is filled with hemolymph.

Circulatory System

The body's system responsible for transporting blood, nutrients, gases, and wastes to and from cells.

Spicules

Small, pointed structures made of calcium carbonate or silica found in sponges and some other invertebrates, serving as structural support and defense.

Tracheal Tubes

A system of small tubes in insects that carries oxygen directly to tissues and organs.