What is the difference between a receptor and a sense organ?

What is the difference between a receptor and a sense organ?

• A. A receptor is a specialized cell that detects a stimulus; a sense organ is a structure composed of receptors and other tissues to receive a stimulus (e.g., eye for light).
• B. A receptor is a nerve ending; a sense organ is a structure composed of receptors and other tissues to receive a stimulus (e.g., eye for light).
• C. A receptor detects a stimulus; a sense organ detects only light.
• D. A receptor is a brain region; a sense organ is a muscle that detects stimuli.

Answer: (A)