How many teeth are present in an earthworm?

Earthworms are soft-bodied invertebrates with segmented bodies.

Earthworms have no teeth. Their digestive system is simple, consisting of a mouth, pharynx, oesophagus, crop, gizzard, and intestines. The gizzard, which is located near the worm's midsection, aids in the grinding of food by using small particles of soil. 

Earthworms consume dead and decaying organic matter, which they digest with digestive enzymes.