The blood of a cockroach does not contain any | vedclass

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(D) The circulatory system in a cockroach is of an open type, and its blood (hemolymph) does not contain any respiratory pigment (like hemoglobin), so

Vedclass · Accepted Answer

Oxygen reaches the tissues through the tracheal system.

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(D) The circulatory system in a cockroach is of an open type, and its blood (hemolymph) does not contain any respiratory pigment (like hemoglobin), so the blood does not transport oxygen. Cockroaches have a special $(Tracheal system)$ for respiration. This system consists of a network of tracheal tubes that deliver oxygen directly from the environment to the tissues. Therefore, oxygen reaches the tissues through the tracheal system.

List-$I$	List-$II$
$A$. The structures used for storing of food	$I$. Gizzard
$B$. Ring of $6-8$ blind tubules at junction of foregut and midgut.	$II$. Gastric Caeca
$C$. Ring of $100-150$ yellow coloured thin filaments at junction of midgut and hindgut.	$III$. Malpighian tubules
$D$. The structures used for grinding the food.	$IV$. Crop

The blood of a cockroach does not contain any respiratory pigment. This means that .........

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