How did multicellular life evolve? Algae, yeast and protists like slime moulds give some hints

Single-celled organisms that cluster and cooperate provide tantalising insights into the origins of multicellularity, suggesting this step may not be so rare after all

Slime mold - Wikipedia

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Slime Mold Life Cycle, Examples & Facts - Lesson

Starvation turns slime moulds into multicellular organisms

Is there any example of multicellular organism evolved from unicellular? - Quora

Why are slime molds categorized in the protista kingdom? - Quora

De novo origins of multicellularity in response to predation

Why are there unicellular fungi? If they are unicellular, why aren't they protista? - Quora

Biology 2e, Biological Diversity, Protists, Groups of Protists

Groups of Protists Biology for Majors II

Multicellular organism - Wikipedia

What are some common examples of multicellular and unicellular organisms? - Quora

Amoebozoa - an overview

Fungus-like Protists

Single Cells Evolve Large Multicellular Forms in Just Two Years