A) different in last 15 segments
B) different in 1st 13 segments
C) same throughout body
D) different in 1st 10 and last 10 segments
Correct Answer: B
Solution :
Blood vascular system is of closed type in earthworm. Blood is red due to Hb in plasma of earthworm. In first 13 segments the dorsal blood vessels, ventral blood vessels and lateral oesophageal vessels are present and there arrangement is different as compared to rest of body. Rest of body has dorsal blood vessels, ventral blood vessels and sub neural blood vessels.
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