Question

explain different type of protozoans. (any3)
(3marker)​

Answer 1

Answer:

Protozoans are microscopic unicellular eukaryotic organisms with heterotrophic mode of nutrition. Their nutrition may be holozoic, saprobic, or parasitic. These are divided into four major groups. They are unicellular, jelly-like protozoa found in fresh or sea water and in moist soil.

Explanation:

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Answer 2

Protozoans

• Protozoans are primitive unicellular eukaryotic organisms.

• They can be both free living and parasitic. Plasmodium is a parasitic protozoa.

• They are heterotrophs, they derive their nutrition from the host organism.

• Normally, they are found in saline water and rarely in freshwater bodies.

• They reproduce asexually, binary fission incase of amoeba and multiple fission in case of plasmodium. They can also produce gametes, as plasmodium produces megasporocyte (ovum) and microsporocyte (sperm).

• They are flagellated as seen in the case of trypanosoma.

• Plasmodium are digenetic, they require two organisms to complete their lifecycle.

• They causes diseases like malaria & amoebic dysentery in Humans.

Examples,

• Plasmodium vivax
• Plasmodium falciparum
• Plasmodium ovale
• Ameoba
• Trypanosoma