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Why are protozoa unicellular organisms?

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Protozoa is called as unicellular because it has only one cell, which has no nucleus and distinct organelles. Protozoa are non-phototrophic, unicellular, eukaryotic microorganisms with no cell walls. read more

Protozoa is called as unicellular because it has only one cell, which has no nucleus and distinct organelles. Protozoa are non-phototrophic, unicellular, eukaryotic microorganisms with no cell walls. This diverse group of over 65,000 species generally share these basic attributes. read more

In addition, unicellular organisms that belong to phylum Sarcodina also use temporary pseudopodia, which are projections of the protoplasm commonly, referred to as false feet. Mastigophora Mastigophora is also a phylum of protozoa and includes the likes of Giardia lamblia and Trichomonas vaginalis. read more

Historically, the Protozoa were classified as "unicellular animals", as distinct from the Protophyta, single-celled photosynthetic organisms (algae) which were considered primitive plants. Both groups were commonly given the rank of phylum, under the kingdom Protista. read more

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