1. The body of earthworm is bilaterally symmetrical and extensively segmented.
2. The anterior end is tapering while posterior end is more less blunt.
a) The skin of earthworm is moist.
b) The colour of earthworm is dark brown in colour.
c) The dorsal surface is darker than the ventral surface.
d) Earthworm moves by alternate contractions of circular and longitudinal muscles.
e) Ring like segments are present in earthworm.