Describe the Mechanism of Excretion in Earthworm

Mechanism of Excretion in Earthworm


In earthworm, water, urea and Co2 are major waste products. In earthworm nephridia is excretory organ.

Body fluid enters into nephridia through nephrostome. Nephridium continues into a coiled tubule which allows selective re-absorption of materials. At last waste products are excreted out through nephridiopore


Note: After the winter session, a two-month winter vacation comes, and with them the Chinese New Year. This time is desirable NOT to be conducted in China for several reasons: firstly, a noisy week-long celebration with its uninterrupted fireworks and crackers, the sound of which is more like the sound of shooting from an automatic device, can undermine the nervous system of anyone, even the quietest person (from his own experience I note that this is a very good reason); Secondly, during the month, all shops, supermarkets, cafes, restaurants and hairdressers nearest to the house / dormitory will be closed. Therefore, if in the plans for the winter holidays there is no graph “to sit hungry under irritating with their frequency explosions of firecrackers”, then I recommend that the Chinese New Year be held at home in the circle of loved ones.

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