Question

The body cavity of cockroach is called as

• A. Pseudocoel
• B. Coelom
• C. Haemocoel
• D. Hydrocoel

Answer 1

Answer: (C)

Haemocoel

Body cavity of cockroach is known as haemocoel, as it remains filled with haemolymph (blood). The coelom that is, haemocoel is divided into 3 main sinuses by a dorsal and ventral horizontal diaphragm:
-Pericardial sinus (surrounding the heart and aorta)
-Perivisceral sinus (surrounding the various visceral organs)
-Perineural sinus ( surrounding the ventral nerve cord)

Pseudocoel is the body cavity of certain invertebrate metazoan animals between the body wall and the intestine, which is not lined with a mesodermal epithelium.
Coelom is the body cavity of higher metazoans, between the body wall and intestine, lined with a mesodermal epithelium.

Hydrocoel is the accumulation of serous fluid in a body sac.

Therefore, the correct answer is option C.