Simple tissues
- Made up of the same type of cells.
- Covers the surface of internal (e.g. brain) and external (e.g. skin) organs.
- The cells are packed tightly together.
- Called epithelium in animals and epidermis in plants.
- Examples are the muscle tissue in animals and dermal tissue in plants.
Complex tissues
- Made up of different type of cells.
- Inside or between organs and supports and binds other tissues
- The cells are thorougly scattered.
- Called connectivity tissue in animals and vascular tissue in plants.
- Examples are the blood tissue and bone tissues in animals, and the xylem tissue and phloem tissue in plants.