Question

A fish dies when taken out of water whereas a wall lizard will die if kept underwater. Mention the term used to describe such abilities that allow fish and lizard to survive in their respective habitats?

Answer 1

Answer:

• Fishes usually respire with the help of their gills. Gills are very richly supplied with blood capillaries and can absorb the oxygen dissolved in water.
• We know the chemical formula for water is H2O So,the water contains some dissolved oxygen in it.
• When the water enters the fish through its mouth, the dissolved oxygen is taken inside and carbon dioxide is given out through the gills.

• In this way, the fishes breathe in water. When fishes are taken out of water, the supply of oxygen to the fishes is cut as the fishes cannot absorb and breathe using the oxygen present in the atmosphere on earth. Hence, they die after some time.

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Answer 2

Answer:

This is because lungs do not help to breathe under water

Lizard has lungs so it can’t breathe under water

Gills do not help to breathe on land

But fishes have gills

So as soon as it is taken out of water it dies

Hope it helps