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

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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.

Column $I$	Column $II$
$(a)$ Grinding of the food particles	$(i)$ Hepatic caecae
$(b)$ Secrete gastric juice	$(ii)$ $10^{\text{th}}$ segment
$(c)$ $10$ pairs	$(iii)$ Proventriculus
$(d)$ Anal cerci	$(iv)$ Spiracles

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

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