What was the basis of the separation of unicellular entities as per Haeckel?
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Solution
Earnt Haeckel gave the three kingdom classification by separating Protista, Animalia, and Plantae.
Unicellular algae and fungi were separated from multicellular species on the basis of tissue differentiation and were put in kingdom Protista in three kingdom classification.
Later Haeckel improvised his classification on the basis of unicellular ( Protista) and multicellular ( Plantae or Animalia).