For non-insects, its the transportation of oxygen and nutrients to the cells and wastes away from the cells.
The main system that serves the needs of individual cells in multicellular organisms is the circulatory system. This is used to take waste away from individual cells and bring in new fuel such as proteins, glucose, and oxygen.
To transport materials throughout the body.
circulatory system
The multicellular organism contains two or more cells. They also own an organ system which contains tissues and organs.
The organ system level is the fourth and highest level of organization in a multicellular organism. At this level, multiple organs work together to carry out specific functions, such as the circulatory system or digestive system.
It is hard to state the number of different 'Systems'. Each organ system performs a unique function.
multicellular organism
In a multicellular organism such as a person, it is the function of the digestive system to produce food that can be used on a cellular level.
its a multicellular organism
Unicellular: Exchanges occur directly with enviroment Multicellular: Diffusion is not possible unless diffusion across body surface. Transporting substances over long distance in animals.
circulatory system
The main function of your circulatory system is to oxygenate blood and pump it throughout your body