In earthworms,the enteronephric nephridia ope | vedclass

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(D) In earthworms $(Pheretima)$,nephridia are classified based on their opening into three types: septal,integumentary,and pharyngeal nephridia.Pharyn

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Both $(b)$ and $(c)$

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(D) In earthworms $(Pheretima)$,nephridia are classified based on their opening into three types: septal,integumentary,and pharyngeal nephridia.Pharyngeal nephridia are present as three paired tufts in the $4^{th}$,$5^{th}$,and $6^{th}$ segments.These nephridia discharge their nitrogenous wastes into the alimentary canal.Specifically,the pharyngeal nephridia of the $4^{th}$ and $5^{th}$ segments open into the buccal cavity,while those of the $6^{th}$ segment open into the intestine.Therefore,enteronephric nephridia open into both the buccal cavity and the intestine.

In earthworms,the enteronephric nephridia open into the.........

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