What are Characteristics of Protozoa

Characteristics of Protozoa

 

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:

 

  1. i) Mostly they live singly.

 

  1. ii) Some times they form colonies.

 

 

Harmful Protozoa:

 

  1. i) Amoeba causes dysentery.

 

  1. 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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