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In earthworm, pharyngeal nephridia are present as three paired tufts in the segments |
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a) |
3rd, 4th and 5th |
b) |
4th, 5th and 6th |
c) |
5th, 6th and 7th |
d) |
6th, 7th and 8th |
|
In earthworm, pharyngeal nephridia are present as three paired tufts in the segments |
|||||||
|
a) |
3rd, 4th and 5th |
b) |
4th, 5th and 6th |
c) |
5th, 6th and 7th |
d) |
6th, 7th and 8th |
(b)
Pharyngeal nephridia are present as three paired tufts in the segments 4th, 5th, 6th. They discharge excretory matter into the gut (buccal cavity and pharynx) by these paired ducts