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Question

Which of the following class of protozoa is totally parasitic?

A
Ciliata
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B
Sporozoa
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C
Sarcodina
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D
Mastigophora
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Solution

The correct option is B Sporozoa
The Sporozoa are parasitic protozoans that lack locomotory organs. They have no cilia, no flagella, no pseudopods. They usually pass from host to host in protective capsules, called 'spores', which enclose zygotes or juvenile states. Hence, option B is correct.

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