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Question
Which one of the following agents affects hatching of silk worm eggs?
Which one of the following agents affects hatching of silk worm eggs?
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Solution
The correct option is A Protozoan parasites
Pebrine is a protozoan disease of the silkworm which is caused by microsporidian parasites, mainly Nosema bombycis.
Nosmea kills all of the silkworms hatched from the infected eggs and comes from the food that silkworms eat. If silkworms get this microsporidium in their larval stage, there are no visible symptoms. But the mother moth will pass this microsporidium onto the eggs and all of the worms hatching from the infected eggs will die in the larval stage.
Thus, the correct answer is option (A).
Pebrine is a protozoan disease of the silkworm which is caused by microsporidian parasites, mainly Nosema bombycis.
Nosmea kills all of the silkworms hatched from the infected eggs and comes from the food that silkworms eat. If silkworms get this microsporidium in their larval stage, there are no visible symptoms. But the mother moth will pass this microsporidium onto the eggs and all of the worms hatching from the infected eggs will die in the larval stage.
Thus, the correct answer is option (A).
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