Question

how many numbers of nephiridia are found in leech​

Answer 1

Answer:

There are seventeen pairs of nephridia one pair each in 6th and 22nd segments. Thus the first five segments and the posterior four segments are devoid of nephridia.

Answer 2

Answer

Excretory system consists of nephridia. There are seventeen pairs of nephridia one pair each in 6th and 22nd segments. Thus the first five segments and the posterior four segments are devoid of nephridia.