A group of different types of tissues that work together to perform a function is called an

• A. Cell
• B. Tissue
• C. Organ
• D. Organ System

Answer: (C)

A structure formed when several tissue types work together to carry out a specific function is called an organ. Tissues are groups of similar cells performing a common task, but they don’t include multiple tissue types. When different tissues—such as epithelial, muscle, connective, and nerve tissues—combine in one structure, they coordinate to carry out a specialized role, like the stomach’s role in digestion or the heart’s pumping action. That integration of multiple tissues into one functional unit is what defines an organ. Organ systems, in turn, are groups of organs that work together to accomplish broader tasks like digestion or circulation. The other options don’t fit because a cell is a single cell, a tissue is a group of similar cells, and an organ system is a higher level composed of multiple organs.