Which of the following best describes tissue?

Tissue is defined as a group of similar cells that work together to perform a specific function. This is a fundamental concept in biology and anatomy, as tissues serve as the building blocks for organs and systems within the body. Each type of tissue has distinct characteristics and functions. For example, muscle tissue is responsible for movement, nervous tissue transmits signals, and epithelial tissue provides coverage and protection to surfaces.

The description provided aligns with the structural organization of living organisms, where cells aggregate to form tissues, which in turn combine to create organs and systems. Understanding this hierarchical organization is essential in fields like veterinary medicine, where knowledge of anatomy and physiological functions is vital for diagnosis and treatment.