Mark the incorrect statement about the heart of cockroach.
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a
It is an elongated muscular tube.
b
It lies along mid-dorsal line of thorax and abdomen.
c
It is differentiated into funnel-shaped chambers.
d
It opens anteriorly into the head sinus through ostia.
answer is D.
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Detailed Solution
The heart of cockroach opens into head sinus through anterior aorta. Ostia are the openings in either side of funnel-shaped chambers of the heart through which blood from the pericardial sinus enters the heart.