Q .     Which of the following is correct for the circulatory system of cockroach?

MHCET 2011
A

It is present on the dorsal side and it has thirteen unis of heart in abdominal region

B

It is present on the ventral side and it has ten abdominal and three thoracic unit of heart

C

It is present on the ventral side and it has thirteen units of heart in abdominal region

D

It is present on the dorsal side and it has ten abdominal and three thoracic units of heart

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