Question

differentiate between unicellular and multicellular organism?​

Answer 1

Answer:

Unicellular Organisms Multicellular Organisms

Unicellular organisms are composed of a single cell Multicellular organisms are composed of more than one cell

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 comparatively longer lifespan

Injury to the cell leads to the death of the organism Injury to a cell does not cause the death of the multicellular organism

Asexual reproduction is predominant, however, sexual reproduction is also seen (conjugation) Reproduction happens sexually as well as asexually

Cell differentiation is absent Cell differentiation is present

They can be autotrophs or heterotrophs They include both autotrophs and heterotrophs

They are microscopic in nature Most 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

Answer 2

Answer:

Unicellular

• It consists of single cell
• All activities of organisms [Like nutrition, excrition ] are performed by a single cell.
• There is no division of labour as single cell perform all life activities.
• Reproduction consume a single cell.
• life span is short.
• ex. bacteria, yeast.

Explanation:

Multicellular

1. consists large number of cell.
2. all single activities performs one or few activities of a organism
3. cells are specized to prfm dfrt function of the body so there is division of labour within cells
4. only some cells of body called germ cells in part of reproduction
5. life span is long

ex. human being, plants and animals.

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