Difference between unicellular and multicellular organisms

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Difference between unicellular and multicellular organisms

Posted by Meghana Bhimer 5 years, 9 months ago

CBSE > Class 09 > Science

3 answers

Insha Fatima 5 years, 9 months ago

Multicellular organisms The organisms are made up of many cells are called multicellular organism the multicellular organism may be made up of a few cell example (some algal and fungal forms ) to several million cell example human beings , tree,whale ,etc.

2Thank You

Insha Fatima 5 years, 9 months ago

Unicellular organisms - The organisms are made up of a single cell , they are called unicellular organisms . Ex amoeba ,bacteria, paramecium , chlamydomonas.

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Yogita Ingle 5 years, 9 months ago

<th>Unicellular Organisms</th> <th>Multicellular Organisms</th>

Unicellular organisms are composed of a single cell	Multicellular organisms are composed of more than one cell
Irregular in shape	Have a definite shape
Simple body organization	Complex body organization
A single cell carries out all necessary life processes	Multiple cells perform different functions
The total cell body is exposed to the environment	Only the outer cells are exposed to the environment
Division of labour is at the organelle level	Division of labour is at cellular, tissue, organs and organ system level
Includes both eukaryotes and prokaryotes	Includes only eukaryotes
A lifespan of a unicellular organism is usually short	Multicellular organisms have a comparitively longer lifespan
Injury to the cell leads to the death of the organism	Injury to a cell does not cause death of the multicellular organism
Reproduce by asexual reproduction	Reproduction happens sexually as well as asexually
Cell differentiation is absent	Cell differentiation is obvious
They can be autotrophs or heterotrophs	They include both autotrophs and heterotrophs
They are microscopic in nature	They are macroscopic in nature
Bacteria, amoeba, paramecium, and yeast are examples of unicellular organisms	Humans, animals, plants, birds and insects, are examples of multicellular organisms