Large animals require a circulatory system so that they are able to efficiently distribute materials throughout their body. The circulatory system consists of the heart, blood vessels, blood, lymph, lymph vessels, and associated organs such as the thymus, spleen, and liver. Various functions include: transport of nutrients from the digestive system and storage depots to each cell, transport of oxygen from respiratory structures, transport of metabolic wastes from cells to excretory organs, transport of hormones, helps to maintain fluid balance, distribute metabolic heat, maintain the approprate pH and help defend against invading microorganisms.
Actually many single celled organisms do have a water transport system. The contractile vacuole which can prominently be seen in freshwater paramecium is an organelle that excretes excess water outside the cell.
Single-celled organisms (for example, amoebas, euglenas) do not have a circulatory system because they have only one cell, and materials can easily move around the cell without a special system.
They need a circulatory system in order to transport nutrients and waste out of and into cells.
The circulatory system moves oxygen through the body.
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multicellular organism
Yes, a human is a multicellular organism.
Multicellular.
the answer is Multicellular! i just figured it out!
Multicellular.
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.
multicellular organism
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.
The multicellular organism contains two or more cells. They also own an organ system which contains tissues and organs.
an Organ System
multicellular organisms obtain their oxygen through the respiratory system
the role of the circulatory system is to transport oxygen and nutrients to all the cells in that one organism
To transport materials throughout the body.
as a multicellular organism develops, its cells as a multicellular organism develops, its cells
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