Question

Which of the following is not a true amphibian?
A. Tortoise
B. Frog
C. Salamander
D. Bufo

Answer 1

Hint:The species belonging to the Amphibia class fall under the Chordata phylum of the Animalia kingdom. There are multicellular vertebrates that both live on water and ground. Around 3000 species are included in this class. They are the first animals with cold blood that have emerged on land.

Complete answer:
Let us see some characteristic features of amphibians in order to understand amphibians.
Class Amphibia characteristics:
The attributes of the species found in the amphibia class are as follows:
They can live both on land and on the sea.
These are ectothermic species that are found in a warm environment,
Their body is split between the head and the trunk. The tail may be present or not.
Without any scales, the skin is smooth and rough, but with glands that keep it moist.
For locomotion, they have two pairs of limbs.
With metamorphosis, growth is indirect.
Breeding in water happens. In males, the copulatory organs are absent.
Frogs, salamanders, and buffoons, for example.
Because of the following traits, tortoises are classified as reptiles and not amphibians:
They are vertebrates that have a backbone of their own.
In scales, they are covered.
They're breathing from their lungs.
They're laying eggs.
And they are cold-blooded, which means that their body temperature can not be controlled.
And the species falling under the group of reptiles and not amphibians display all these characteristics.

Thus from the above discussion, it is clear that tortoises are not true amphibians so the correct answer is option A - tortoise.

Note: In reptiles, metamorphosis does not occur. The transformation of the larva into a miniature adult replicate, and typically from an aquatic to a terrestrial or semi-terrestrial lifestyle, is a metamorphosis in amphibians.