Question

The purpose of the nephridia in the earthworm.

1. What structure in the crayfish performs the same function?​

Answer 1

See below ~

Step-by-step explanation:

The purpose of nephridia in earthworm is to remove metabolic wastes from the animal body. They occur in pairs and perform a function to that of a vertebral kidney.

In crayfish, the structures which performs the same function are called pair maxillary and antennal glands or they are commonly called green glands.