Which Is Evidence That an Organ System Provides a Level

question 19

Multiple Choice

Which is evidence that an organ system provides a level of function not possible with individual organs operating independently?

• A) Bears grow thick fur on their bodies.
• B) Blood circulates to all tissues of a horse's body.
• C) Humans produce antibodies that bind to invading pathogens.
• D) Bones in mammals are composed of living cells.
• E) The dog stomach produces digestive enzymes.