difference between unicellular and multicellular organism?

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Usha Nair

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Unicellular organism : Body is made up of single cell Multicellular organism : Body is made up of numerous cells Unicellular organism : Division of labour is at the organelle level. It gives a low level of operational efficiency Multicellular organism : Division of labour may be at cellular, tissue,...
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Unicellular organism : Body is made up of single cell Multicellular organism : Body is made up of numerous cells Unicellular organism : Division of labour is at the organelle level. It gives a low level of operational efficiency Multicellular organism : Division of labour may be at cellular, tissue, organ and organ system level. It gives high degree of operational efficiency Unicellular organism : A single cell carries out all the life processes Multicellular organism : Different cells are specialized to perform different functions Unicellular organism : The cell body is exposed to the environment on all sides Multicellular organism : Only outer cells are specialized to face the environment. Inner cells are devoted to other functions Unicellular organism : An injury of the cells can cause death of the organism. Multicellular organism : Injury or death of some cells does not affect the organisms as the same can be replaced by new one. Unicellular organism : A cell body cannot attain a large size because of the limit imposed by surface area to volume ratio Multicellular organism : A multicellular body can attain a large size increasing the number of small cells Unicellular organism : Lifespan is short due to heavy load of work Multicellular organism : Lifespan is long due to limited load of work for each cell type Unicellular organism : Power of division is not lost Multicellular organism : Certain specialized cells lose power of division Unicellular organism : A well-marked capacity of regeneration is present Multicellular organism : The capacity of regeneration decreases with increasing specialization Unicellular organism : The cell has the same role for itself and the organism Multicellular organism : Cells have a double role. One for themselves and other for the organism read less
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In unicellular organism, body is made up of single cell and carries out all the life processes and lifespan is short due to heavy load of work while in multi-cellular organism, body is made up of multiple cells and different cells are specialized to perform different functions and Lifespan is long due...
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In unicellular organism, body is made up of single cell and carries out all the life processes and lifespan is short due to heavy load of work while in multi-cellular organism, body is made up of multiple cells and different cells are specialized to perform different functions and Lifespan is long due to limited load of work for each cell type. read less
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unicellular organism-body is composed of single cell Multicellula organism-body is composed of multi cells
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Some living organisms are made up of once cell only, these are called unicellular. These organisms have a large surface area to volume ratio and rely on simple diffusion to meet their needs. An example of a unicellular animal is Amoeba. Multicellular organisms are those which are made up of many cells....
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Some living organisms are made up of once cell only, these are called unicellular. These organisms have a large surface area to volume ratio and rely on simple diffusion to meet their needs. An example of a unicellular animal is Amoeba. Multicellular organisms are those which are made up of many cells. Humans are multicellular. Multicellular organisms can be much larger and more complex. This is because the cells of the organism have specialised into many different types of cells such as nerve cells, blood cells, muscle cells all performing different functions. read less
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One cell organism are called unicellular and mre than one cell are called multicellular
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The number of cells in the body varies with different organisms. In some lower forms of life (Example: Euglena, Amoeba) The body is formed of a single cell; these organism are described as unicellular. They are called multicellular organisms.
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