A collection of identical cells that live together in a connected group is called a tissue.

Here's why:

* Identical cells: Cells within a tissue share a common origin and perform similar functions.

* Connected group: Cells within a tissue are connected by specialized junctions, allowing them to communicate and work together.

Examples of tissues include:

* Epithelial tissue: Covers surfaces and lines cavities of the body.

* Connective tissue: Supports and connects other tissues.

* Muscle tissue: Enables movement.

* Nervous tissue: Transmits information throughout the body.