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Which of the following is the correct statement about the circulatory system of cockroachA. It is closed type of circulatory systemB. It is a complicated type of circulatory systemC. It takes place without the participation of tissueD. It has 13 chambered heart and in each segment one pair of ostia are present |
Answer» Correct Answer - D The heart of cockroach is pulsatile and formed of 13 inverted funnel-shaped segmental chamber, each chamber (except last one) has a pair of apertures called ostia which open into the pericardial sinus. |
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