What is multicellular organismss

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Explanation:

Multicellular organisms are organisms that consist of more than one cell, in contrast to unicellular organisms.[1]

All species of animals, land plants and most fungi are multicellular, as are many algae, whereas a few organisms are partially uni - and partially multicellular, like slime molds and social amoebae such as the genus Dictyostelium.[2][3]

Multicellular organisms arise in various ways, for example by cell division or by aggregation of many single cells.[4][3] Colonial organisms are the result of many identical individuals joining together to form a colony. However, it can often be hard to separate colonial protists from true multicellular organisms, because the two concepts are not distinct; colonial protists have been dubbed "pluricellular" rather than "multicellular".[5][6]

Multicellular organisms can be described as an organism which is made up of multiple cells. A unicellular organism is made up of only a single cell. Multicellular organisms are complex organisms as they are made up of more than one cell. Unicellular organisms are simple organisms as they constitute of only a single cell.

Examples of a multicellular organism include humans, elephants, bats, rats, cats etc.

Example of a unicellular organism is bacteria.