Question

how many types of nepridia are found in earthworm based on their location

Answer 1

Nephridia are the organs for exrection and osmoregulatios in annelids eg earth worm
based on location Nephridia in earthworm are of following types
pharyngeal
septal
and integumentary Nephridia
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Answer 2

On the basis of their location, three types of nephridia are found in earthworms. They are:

(a) Septal nephridia: These are present on both sides of the inter-segmental septa behind the 15th segment. They open into the intestines.

(b) Integumentary nephridia: These lie attached to the body wall from the third segment to the last segment, which opens on the body surface.

(c) Pharyngeal nephridia: These are present as three paired tufts in fourth, fifth, and sixth segments.

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