Respiratory system plays an important role of enabling gas exchange and supply of oxygen to the animals. Although, the basic mechanism of the system remains same, animals display variation in their respiratory system. In the following columns match the animals with their organ for respiration. Animal Respiratory Organ 1 Kangaroo P Moist cuticle 2 Pomfret Q Lungs 3 Cockroach R Gills 4 Earthworm S Tracheal tubes

Question

Respiratory system plays an important role of enabling gas exchange and supply of oxygen to the animals. Although, the basic mechanism of the system remains same, animals display variation in their respiratory system. In the following columns match the animals with their organ for respiration. Animal Respiratory Organ 1 Kangaroo P Moist cuticle 2 Pomfret Q Lungs 3 Cockroach R Gills 4 Earthworm S Tracheal tubes, 1-Q, 2-P, 3-S, 4-R, 1-Q, 2-R, 3-S, 4-P, 1-Q, 2-R, 3-P, 4-S, 1-Q, 2-P, 3-R, 4-S

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The respiratory system is the organ system helping animals in breathing and gas exchange to utilize oxygen for respiration process. Animals show variation in their way of obtaining the oxygen depending on their complexity habitant among other factors. Kangaroo is a mammal and terrestrial animal that obtains oxygen from the air via the lungs. Pomfret is a type of fish that uses gills for breathing in water. The cockroach is simpler invertebrate compared to kangaroo and pomfret using tube-like structure called trachea. Lastly, the earthworm is an annelid that uses its moist cuticle region for exchanging gases enabling breathing.

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	Animal		Respiratory Organ
1	Kangaroo	P	Moist cuticle
2	Pomfret	Q	Lungs
3	Cockroach	R	Gills
4	Earthworm	S	Tracheal tubes