Why do blue green algae and unicellular algae are excpetions from the kingdom plantae ? Instead, according to what characteristics are the placed in Monera and Protista respectively ? (ALL ALGAE ARE IN THE KINGDOM - PLANTAE )
Blue green algae is unicellular and prokaryotic means lack membrane bound nucleus that is why it cannot be considered as a plant. Plants are multicellular and eukaryotic means they have proper membrane bound nucleus.
Blue green algae show characteristics that are similar to monera, all monera's are unicellular and prokaryotic.