Earthworm

Calciferous glands

________, present in the stomach, neutralize the humic acid present in the humus.

Pheretima

________ exhibits a closed type of blood vascular system, consisting of blood vessels, capillaries, and the heart.

ova

The ________ (eggs) are fertilized by the sperm cells within the cocoon which then slip off the worm and are deposited in or on the soil.

straight tube

The alimentary canal is a(n) ________ that runs between the first to the last segment of the body.

nephridium

A(n) ________ starts out as a funnel that collects excess fluid from the coelomic chamber.

Nephridia

________ regulate the volume and composition of body fluids.

Earthworms

________ are known as ‘friends of farmers because they make burrows in the soil and make it porous which helps in respiration and penetration of the developing plant roots.

Thus the body is divisible into three prominent regions

preclitellar, clitellar and postclitellar segments