Which of the following is correctly described | vedclass

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(C) In a common cockroach $(Periplaneta 	ext{ } americana)$:$1$. Oxygen is not transported by hemoglobin because the blood (hemolymph) lacks respirat

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Food is ground by the mandibles and gizzard.

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(C) In a common cockroach $(Periplaneta 	ext{ } americana)$:$1$. Oxygen is not transported by hemoglobin because the blood (hemolymph) lacks respiratory pigments.$2$. The nitrogenous excretory product is uric acid, not urea (it is uricotelic).$3$. Food is ground by the mandibles (for cutting) and the gizzard (proventriculus), which has chitinous teeth for grinding.$4$. Malpighian tubules are excretory organs that arise at the junction of the midgut and hindgut, not from the rectum.

Which of the following is correctly described for a common cockroach $(Periplaneta \text{ } americana)$?

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