Question

6) Give scientific reasons. Though tortoise lives on land as well as in water, it cannot be included in class - Amphibia
please its urjant​

Answer 1

Answer:

(1) When tortoise lives on the land, it respires with the help of lungs. When in water, it puts its nares ( nasal openings ) out of the water and breathes air. (2) It cannot take up oxygen dissolved in water. In both the habitats it respires with the help of lungs. (3) In case of true amphibians, this is not the case. (4) They can breathe in water with the help of skin and on land with the help of lungs. Tortoise also has exo-skeleton which is lacking in Amphibia. Therefore, tortoise cannot be included in class Amphibia.

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