Lateral lines of epidermis in Ascaris contain

Nerves

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Excretory canals

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Oviducts

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Spermatic ducts

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Solution

The correct option is A Excretory canals
The epidermis of Ascaris forms four longitudinal thickening, two are lateral lines which contain excretory canal and two thinner dorsal and ventral line. Its excretory system is H-shaped and has two excretory canal that leads to the excretory pore.
Thus, the correct answer is option B.

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