Similarities between unicellular and multicellular organisms – both have basic needs as living organisms that are similar.
1) Both are made of cells
2) Both obtain and use energy.
3) Both grow and develop.
4) Both reproduce.
5) Both respond to their environment.
6) Both adapt to their environment.
Differences –
Organisms that exist as single cell are called unicellular. Unicellular organisms live without other cells to help them. So the cell does all things that it needs to live.
Examples – Amoeba, Paramecium.
Organisms that are made up of groups of cells working together are called multicellular. The cells of a multicellular organism are not all the same. They have different shapes and sizes, and do different work in the organism. The cells are specialized.
Examples – All plants and animals are multicellular organisms.