Body cavity of Cockroach is called haemocoel because
A
It contains blood
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B
It contains lymph
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C
It is filled with water
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D
It is empty
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Solution
The correct option is A It contains blood Blood vascular system of cockroach is an open type. Blood vessels are poorly developed and open into space (haemocoel). Visceral organs located in the haemocoel are bathed in blood (haemolymph). The haemolymph is composed of colorless plasma and haemocytes. Hene body cavity of cockroach is called as hemocoel because it contains blood.