Co-ordination
Control:
systematic regulation of different processes can be called control.
Co-ordination:
Bringing about the different processes in the proper sequence can be called co-ordination.
There needs to be proper co-ordination between internal activities of the body resulting from various factors like water-level, body temperature, enzyme-level, etc.
Homeostasis:
Proper co-ordination between various systems of an organism helps to maintain a state of equilibrium called ‘homeostasis’. Homeostasis is necessary for the optimal efficiency of the body.