One very special feature in the earthworm pheretima is that

Options

A. It has a long dorsal tubular heart
B. Fertilisation of eggs occurs inside the body
C. The typhlosole greatly increases the effective absorption area of the digested food in the intestine
D. The S-shaped setae embedded in the integument are the defensive weapons used against the nemies

Answer

C

Explanation

The characteristic feature of intestine in earthworm is typhlosole. It presents between 26 to 95 segments in the presence of internal medial fold of dorsal wall. These increase the effective area of digestion and absorption in the intestine.