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The simplest multicellular animals that have only a few different cell types are Sponges

Simple multicellular organisms include filaments, clusters, balls, or sheets of cells that arise via mi- totic division from a single progenitor; differentiation of somatic and reproductive cells is common, but more complex patterns of differentiation are not.

What are Multicellular organisms ?

Multicellular organisms are made up of several cells, with cell groupings developing to perform specific tasks. Early in a person's development, cells in the body begin to differentiate into distinct types of cells, including blood, skin, muscle, and nerve cells.

  • The first multicellular organisms arose on Earth about 600 million years ago: basic sponges

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