The infective stage of Ancylostoma duodenale to humans is

Egg containing larva

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Filariform larva

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Microfilaria larva

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Rhabditiform larva

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Solution

The correct option is B Filariform larva
The infective stage of Ancylostoma duodenale to humans is known as filariform larva. This form generally enters the body of host either by swallowing or by burrowing into the skin through hair follicles. Upon reaching the small intestine, the larvae molts fourth and the last time to develop into a mature worm.

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