Question

define protozoa..

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Answer 1

Answer:

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Explanation:

a phylum or grouping of phyla which comprises the single-celled microscopic animals, which include amoebas, flagellates, ciliates, sporozoans, and many other forms. They are now usually treated as a number of phyla belonging to the kingdom Protista.

Answer 2

Answer:

• protozoa are unicellular, eukaryotic, heterotrophic organisms. They are either free-living or parasites. There are around 65000 species of protozoans categorised in different groups. They lack a cell wall. There are many different cell organelles, that perform various tasks performed by different organs in higher animals, e.g. mouth, anus, intestinal tract, etc.

• There are many protozoa, that cause various diseases in animals and humans, e.g. Plasmodium (malarial parasite), Trypanosoma (sleeping sickness), Trichomonas (trichomoniasis), etc.

• The protozoa have many stages in their life cycle. Some of the stages of the life cycle are infectious.

• The cyst stage is dormant and resistant to environmental stress, the trophozoite stage is reproductive and causes disease.

Explanation:

• This is about protoza

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