Question

In: Biology

How is the excretory system of earthworms adapted to life on land in moist environments ?

How is the excretory system of earthworms adapted to life on land in moist environments ?

Solutions

Expert Solution

An earthworm has a streamlined body with no antennae or fins or arms or legs.

This streamlined shape is a adaption to living in narrow burrows underground and the need to move easily through the soil.

All earthworm need a most environment,as they breath through the skin(they have no lungs) and need moisture for respiration (like perspiration) which trap the dissolved oxygen.

Earthworm are adapted for life underground. They have no skeletons and the rigid structures to interfere with their movements.

They have circular muscles that surround each body segments.

Excretory systems consists of Nephridia as excretory organ which is analogous to kidney of vertebrates.

The carbon dioxide and nitrogenous waste are the main waste material.The carbon dioxide is executed out from the body through its moist skin by the process of diffusion.

It helps the body eliminate metabolic waste, maintaining and balancing of salt, water and to control blood.


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