1.

Distinguish between the followings Septal nephridium and pharyngeal nephrldium

Answer»

Septal nephridia, present on both sides of intersegmental septa of segment 15 to the last open into intestine. Pharyngeal nephridia, present as three paired tufts in the 4th, 5th and 6th segments.Both are same structurally and functionally.



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