An organism X having breathing organs A lives on land. When organism X goes under water, it cannot survive for a long time unless carrying an oxygen cylinder. On the other hand, the organism Y having breathing organs B always lives in water and if taken out of water, it dies after a short while. A third organism Z having breathing organs C and D which lives on the banks of ponds, lakes and rivers can survive on land as well as in water equally well.
- What could organism X be? Name the breathing organs A.
- What could organism Y be? Name the breathing organs B.
- What could organism Z be? Name the breathing organs C and D.
- Out of X, Y and Z, which organism is.
- Amphibian,
- Aquatic,
- Terrestrial?
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- Organism X could be a human being. The breathing organs A are lungs.
- Organism Y could be a fish. The breathing organs B are gills.
- Organism Z could be a frog. The breathing organ C is skin and D are lungs.
- Z is an amphibian.
- Y is an aquatic organism.
- X is a terrestrial organism.
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