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Question
In Fasciola hepatica, germination of capsule produces
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Solution
The correct option is A Miracidium
Fasciola parasites develop into adult flukes in the bile ducts of infected mammals, which pass immature Fasciola eggs in their feces. After several weeks the eggs hatch producing a parasite form known as the miracidium, which then infects a snail host. Under optimal conditions, the development process in the snail may be completed in 5 to 7 weeks cercariae are then shed in the water around the snail. The cercariae lose their tails when they encyst as metacercariae on water plants. Mammals acquire the infection by eating vegetation containing metacercariae. Humans can become infected by ingesting metacercariae containing freshwater plants, especially watercress. So, option A is correct.
Fasciola parasites develop into adult flukes in the bile ducts of infected mammals, which pass immature Fasciola eggs in their feces. After several weeks the eggs hatch producing a parasite form known as the miracidium, which then infects a snail host. Under optimal conditions, the development process in the snail may be completed in 5 to 7 weeks cercariae are then shed in the water around the snail. The cercariae lose their tails when they encyst as metacercariae on water plants. Mammals acquire the infection by eating vegetation containing metacercariae. Humans can become infected by ingesting metacercariae containing freshwater plants, especially watercress. So, option A is correct.
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