5. Distinguish between the following
(a) Prostomium and peristomium
The major difference between Prostomium and Peristomium is discussed below:
Prostomium |
Peristomium |
The prostomium is the fleshy lobe which overhangs the mouth of an earthworm | Peristomium is the first segment of the body of the earthworm |
It helps the earthworm push into the soil and is sensory in function | It surrounds the opening of the mouth |