A) Collecting in the whole body
B) Collecting in first 13 segments
C) Distributing in the whole body
D) Distributing in the first 13 segments
Correct Answer: D
Solution :
Dorsal blood vessel distributes in the first 13 segment. The blood in these vessel flow from behind to forward by rhythmic contraction and also posses valves.You need to login to perform this action.
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