(a) What is meant by aquatic animals and terrestrial animals?(b) From where do the aquatic animals and terrestrial animals obtain oxygen for breathing and respiration ?

(a)  Aquatic animals: The animals which live in water and respire through Gills.
Example: Fish, Shark, Octopus.

 Terrestrial animals: The animals which live on land and respire through lungs
Example: Cow, Goat, Tiger.

(b) The oxygen for aquatic animals is obtained from the oxygen dissolved in water. As water contains two hydrogens and one oxygen molecule, this dissolved oxygen is utilized by the aquatic animals for breathing.

The oxygen for terrestrial animals is obtained from the air present in the surrounding atmosphere.


Simply Easy Learning

Updated on: 24-Mar-2023


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