A) the typhlosole greatly increases the effective absorption area of the digested food in the intestine
B) the S-shaped setae embedded in the integument are the defensive weapons used against the enemies
C) it has a long dorsal tubular heart
D) fertilization of eggs occurs inside the body
Correct Answer: A
Solution :
A pair of short and conical intestinal caecae project from the intestine on the 26th segment. The characteristic feature of the intestine between 26-35 segments is the presence of internal median fold of dorsal wall called typhlosole. This increases the effective area of absorption in the intestine.
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