Cow
Explanation
Respiratory systems vary significantly across the animal kingdom based on habitat and evolutionary classification. Humans are mammals and utilize pulmonary respiration, which involves lungs, a trachea, and a diaphragm to facilitate gas exchange.
Detailed Analysis:
- Cow (Correct): Cows are mammals. Their respiratory system is structurally and functionally homologous to that of humans. It consists of external nostrils, a nasal cavity, a trachea, bronchi, and lungs containing alveoli for gas exchange. Like humans, they rely on a diaphragm to aid breathing.
- Cockroach (Incorrect): Cockroaches are insects (Arthropoda). They respire through a tracheal system, a network of tubes that open to the exterior through spiracles. This system delivers oxygen directly to tissues and is structurally distinct from human lungs.
- Earthworm (Incorrect): Earthworms (Annelida) rely on cutaneous respiration. Gas exchange occurs directly through their moist skin by diffusion. They lack specialized respiratory organs like lungs or gills.
- Fish (Incorrect): Fish (Pisces) utilize gills for branchial respiration. Gills are specialized to extract dissolved oxygen from water, functioning differently from the air-breathing pulmonary system of humans.
Key Takeaway:
Mammals, such as humans and cows, share a pulmonary respiratory system characterized by the presence of lungs and alveoli, distinct from the tracheal systems of insects, cutaneous respiration of annelids, or branchial respiration of fish.