Which of the following is the characteristic of Cockroach?

13-chambered heart

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Reduced wings

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Cocoon formation

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Segmented body

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Solution

The correct option is B 13-chambered heart
The heart of the cockroach is elongated, thick, muscular, tubular and 13-chambered. It lies in the pericardial sinus of the hemocoel. Each chamber of the heart receives oxygenated blood from the dorsal sinus through one pair of slit-like openings called ostia. The heart contracts in a posteroanterior direction and the blood also flows posteroanterior. The alary muscles are responsible for the circulation of blood.
So the correct answer is '13-chambered heart'.

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