A) It has a Jono dorsal tubular heart
B) It has open circulatory system
C) It has setae for defence against predators
D) It has typhlosole that greatly increases the absorption area of digested food in intestine
Correct Answer: D
Solution :
In the typhlosolar region, the mid-dorsal wall of the intestine is thrown into a longitudinal fold known as typhlosole. It increases the absorptive surface of the intestine.
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