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Question

Pebrine disease of silkworms is caused by

A
Nosema
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B
Plasmodium
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C
Dugesia
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D
Monocystis.
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Solution

The correct option is D Nosema
  • Pebrine disease is a disease of silkworms, which is caused by protozoan microsporidian parasite called Nosema bombycis.
  • The silkworm larvae infected by pebrine disease are usually covered in brown dots and are unable to spin silkworm thread.
  • Hence Pebrine disease of silkworms is caused by Nosema.
  • So, the correct answer is 'Nosema'.

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