Question

Body cavity of Cockroach is called haemocoel because

• A. It contains blood
• B. It contains lymph
• C. It is filled with water
• D. It is empty

Answer 1

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.

So the correct answer is 'It contains blood'.