Question

Though tortoise lives on land as well as in water, it cannot be included in class - Amphibia.
( Give scientific reason )

Answer 1

Hey Mate

tortoise is not included in amphibians because:

<> It is a reptile - there is so many differences.

<> But it is not a amphibian - so many things that it is amphibian.

<> Reptiles were the world's first truly terrestrial vertebrates.

<> All reptiles have scaly skin that can withstand dessication and lay eggs with hard shells, therefore they are not tied to the water like their relatives, the amphibians. 

<> Since they can live on land, they also have an expanded lung system.

hope it helps you

Answer 2

Hey

TORTOISES CAN'T BE CONSIDERED AS AMPHIBIANS BECUASE THEY CONTRADICT SEVERAL CHARACTERISTICS OF AMPHIBIANS.

THERE IS ONE SIMILARITY THOUGH,THEY BOTH ARE COLD BLOODED VERTEBRATES

DIFFERENCES:

• REPTILES ARE BORN IN EGGS ON LAND
• REPTILES HAVE LUNGS WHILE THE LATTER HAVE GILLS
• REPTILES HAVE DRY SKIN COVERED WITH SCALES.

THESE ALL DIFFERENTIATE A TORTOISE (REPTILE) TO AMPHIBIANS.

THUS, TORTOISES AREN'T A PART OF THE CLASS AMPHIBIA.

HOPE IT HELPS YOU!!!!