Describe the characteristics of group Protozoa?

Describe the characteristics of group Protozoa? 
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1 Answer

Answer :

Habitat: -

They live in damp, watery places, moist soil and in decaying matter of animals and

plants.

Structure: -

They are composed of only one cell. However they perform all the life activities e.g.

intake of food, respiration and reproduction etc.

Mode of Life: -

i) Mostly they live singly.

ii) Some times they form colonies.

Harmful Protozoa: -

i) Amoeba causes dysentery.

ii) Plasmodium causes malaria.

Beneficial Protozoa: -

Many protozoa are useful to man because they feed on harmful protozoa e.g.

amoeba.

Shelled Protozoa: -

Some protozoa live in sea. They have a calcium shell around them for protection.

Hence they are called shelled protozoa.

Examples: - Their examples are amoeba, plasmodium and paramecium etc. 
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