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Question

The stage absent in life cycle of Schistosoma is

A
Miracidium
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B
Redia
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C
Cercaria
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D
Both B and C
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Solution

The correct option is C Redia
Blood flukes form five different developmental stages which are eggs, miracidia, sporocysts, cercariae and adult worms. Schistosomes do not produce redia stages instead the sporocysts produce cercariae which are released into the water after infection. So, option B is correct.

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