The parasite found in the seminal vesicle of earthworm are
A
Monocystis
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B
Nosema
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C
Sarcocystis
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D
Nyctotherus
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Solution
The correct option is AMonocystis Earthworms are exploited by a number of protozoans and nematode parasites and act as intermediate hosts of many parasites of birds and mammals. Two common parasites are Monocystis and Rhabditis which infect earthworms only. Monocystis is the commonest protozoan genus to infect earthworms. The growing form (the trophozoite) and the reproductive forms occur in the seminal vesicle of the earthworms.