Question

What is multicellular organisms and what is unicellular organisms?
Please explain me in bereif

Answer 1

Explanation:

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Answer 2

Answer:

Unicellular organism :

• Unicellular organisms are composed of a single cell
• Simple body organization
• A single cell carries out all necessary life processes
• The total cell body is exposed to the environment
• Division of labour is at the organelle level
• Includes both eukaryotes and prokaryotes
• A lifespan of a unicellular organism is usually short
• Injury to the cell leads to the death of the organism
• Asexual reproduction is predominant, however, sexual reproduction is also seen (conjugation)
• Cell differentiation is absent
• They can be autotrophs or heterotrophs
• They are microscopic in nature
• Bacteria, amoeba, paramecium and yeast are examples of unicellular organisms.

Multicellular organism:

• Multicellular organisms are composed of more than one cell
• Complex body organization
• Multiple cells perform different functions
• Only the outer cells are exposed to the environment
• Division of labour is at cellular, tissue, organs and organ system level
• Includes only eukaryotes
• Multicellular organisms have a comparatively longer lifespan
• Injury to a cell does not cause the death of the multicellular organism
• Reproduction happens sexually as well as asexually
• Cell differentiation is present
• They include both autotrophs and heterotrophs
• Most are macroscopic in nature
• Humans, animals, plants, birds and insects, are examples of multicellular organisms