Which of the following best describes organs?

Organs are best described as structures composed of tissues that perform similar functions. This definition underscores the complexity of biological organization, where an organ is made up of multiple types of tissues that work together to carry out specific tasks. For example, the heart consists of muscular tissue, connective tissue, and nervous tissue, all coordinating to pump blood effectively.

While it is true that organs are made up of specialized cells that contribute to their overall function, stating that they are composed of tissues performing similar functions provides a more accurate and comprehensive understanding. Each type of tissue in an organ serves a distinct purpose, yet they collaborate to achieve the organ’s overall functionality.

The concept of organs being part of organ systems highlights the interdependence of different organs but does not define what an organ itself is. Similarly, referring to organs as composed of individual cells fails to capture the structure and purpose of an organ, as it neglects the critical aspect of tissue organization and collaboration. Therefore, the description of organs as composed of tissues performing similar functions accurately conveys their complexity and function within a living organism.