For example, a lichen is a symbiotic organism formed from algae and fungi. I call symbiosis a heterogeneous metasystem transition because cooperation is established between different species of organisms. Also, there is no differentiation because components are already different. However, components may change considerably in the process of their coevolution. Other examples of symbiosis 1.
Mitochondria are bacteria that became specialized as energy producers.
This is a transmission electron micrograph of rat liver cells. Part of the nucleus is in the right lower corner. Circular objects are mitochondria. Symbiosis of leaf-cutter ants and fungi . The Metasystem Transition Metasystem Transitions in Biology Up Prev.