What Unique Feature Do All Echinoderms Have

question 47

Multiple Choice

What unique feature do all echinoderms have?

• A) Water vascular system
• B) An expelling stomach
• C) A complex chewing jaws
• D) Brains

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Definitions:

Folic Acid

A B-vitamin necessary for cell growth and metabolism, especially important in pregnancy.

Syphilis

A bacterial infection usually spread by sexual contact that starts as a painless sore.

Trimester

A trimester is a period of approximately three months, particularly used to divide the nine months of pregnancy into three stages for the purpose of medical and prenatal care.

Stillborn

Refers to a baby who is born dead after 24 completed weeks of pregnancy.