Which term defines the functional unit formed by a group of tissues that carry out a common function?

Which term defines the functional unit formed by a group of tissues that carry out a common function?

• A. Symbiosis
• B. Eukaryotic
• C. Meiosis
• D. Organ

Answer: (D)

An organ is a structure formed when several different tissues work together to perform a specific function. Each tissue type contributes its part—muscle tissue provides movement, epithelial tissue covers surfaces, connective tissue provides support—so the organ can carry out its job effectively. For example, the heart uses muscle tissue to pump, with connective and lining tissues helping to organize and protect it, all coordinating to move blood through the body. This level of organization lets the body accomplish complex tasks that individual tissues alone can’t achieve. The other terms refer to different ideas: symbiosis is a relationship between organisms; eukaryotic describes cells with a nucleus; meiosis is a cell division that reduces chromosome number to form gametes.

An organ is a structure formed when several different tissues work together to perform a specific function. Each tissue type contributes its part—muscle tissue provides movement, epithelial tissue covers surfaces, connective tissue provides support—so the organ can carry out its job effectively. For example, the heart uses muscle tissue to pump, with connective and lining tissues helping to organize and protect it, all coordinating to move blood through the body. This level of organization lets the body accomplish complex tasks that individual tissues alone can’t achieve. The other terms refer to different ideas: symbiosis is a relationship between organisms; eukaryotic describes cells with a nucleus; meiosis is a cell division that reduces chromosome number to form gametes.