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.

Question

Quizplus · Accepted Answer

Blood circulation is a function of the cardiovascular system, which involves the heart, blood vessels, and blood. This system provides the essential function of oxygen and nutrient delivery to different organs and tissues of the body. It is not possible for individual organs to function independently and provide oxygen and nutrient delivery to all body tissues without the cardiovascular system's collective function.

Answer: C
 The immune system is a network of organs, tissues, and cells that work together to protect the body from invading pathogens, such as viruses and bacteria. The production of antibodies by B-cells is a crucial process in the immune system's defense against these pathogens. This process cannot take place with individual organs acting independently.

Option A is incorrect as thick fur on bear's body is not a function of an organ system.

Option D is incorrect as the fact that bones are made up of living cells does prove the point that organ systems provide a level of function not possible in individual organs operating independently.

Option E is incorrect as the production of digestive enzymes by the dog's stomach does not involve the collective function of organ systems.

Which Is Evidence That an Organ System Provides a Level