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Q.

 Which is incorrect about cockroach?

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a

The heart is differentiated into funnel-shaped chambers with ostia on either side.

b

Male gential pouch contains ventral anus, dorsal male gential pore and gonapophysis.

c

Blood vascular system is of open type in which blood from sinuses enters heart through ostia and is pumped anteriorly to sinuses again.

d

The anterior part of female gential pouch contains female gonopore, spermathecal pores and collaterial glands.

answer is B.

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Detailed Solution

In male cockroaches, genital pouch or chamber lies at the hind end of abdomen bounded dorsally by 9th and
10th terga and ventrally by the 9th sternum. It contains dorsal anus, ventral male genital pore and gonapophysis. 

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