See the Diagram as attached below-
Explanation:-
External Anatomy of the Earthworm is as mentioned below-
Dorsal Side- This side constitutes the top part of the Earthworm body. This part is darker than the remaining body part.
Ventral Side- The Earthworm’s bottom body part is the ventral side and this side is lighter in colour than the upper side.
Anterior side- The Head region is the anterior region of the Earthworm. It can be located by bump at its mouth.
Posterior side- The Tail constitutes the posterior region. Anus of the Earthworm forms the Posterior side.
