A Level Biology Practice Exam

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What does an organ system primarily consist of?

Individual tissues performing separate functions
Multiple organs working independently
A group of tissues collaborating in a complex task
A number of organs working together to perform a specific function

The correct answer is: A number of organs working together to perform a specific function

An organ system is primarily composed of a number of organs that work together harmoniously to perform a specific function essential for the organism's survival and overall function. Each organ within the system has a unique role, but they all collaborate to achieve a common goal, such as circulation, digestion, or respiration. For example, in the digestive system, organs like the stomach, intestines, and liver all interact to break down food and absorb nutrients. This integration is what defines an organ system, distinguishing it from tissues or organs that might function independently or separately. The interplay among organs is crucial for the efficiency and effectiveness of the physiological processes they support.