Final answer:
A group of tissues arranged to perform a definite function for the body is known as an organ. Organs are composed of tissues, which themselves are made up of cells working together to achieve a specific function.
Step-by-step explanation:
The group of tissues that are specifically arranged to perform a definite function for the body is called an organ. Organs are made up of tissues that work together to carry out a particular function.
In larger organisms, cells combine to create tissues, and these tissues combine to form an organ.
Multiple organs then collaborate to form organ systems, such as the circulatory or respiratory systems, which collectively make up the organism. Some common examples of organs include the heart, brain, liver, and lungs