A) All segment except 1 - 4 and 10 - 14
B) 1 - 2, 4 - 6, 15 to last segments
C) Meganephridia in pre-clitellar and micronephridia in post-clitellar segments
D) Micronephridia in alll segments meganephridia from clitellar region to end
Correct Answer: D
Solution :
Nephridia are absent in the first three segments and the last segment. Some workers believe that all the nephridia are of micronephridia type. Other consider septal nephridia to be meganephridia.
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