Turtles are reptiles, not amphibians, because at no stage in their life can they ever breathe water, one of the key differences
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They have smooth, scaleless skin which is permeable to water. Water can easily evaporate from its skin, and the animal can dry up and die in a few hours if it does not have access to water. Thus amphibians tend to be active at times when evaporation is minimized: at night and when it rains. Thus, turtles are not amphibians. They are reptiles. Reptiles have scaly skin and lay eggs with hard shells.
A turtle is a reptile. The two key differences between reptiles and amphibians are metamorphosis from water breathing to air breathing in amphibians, but not reptiles, and the eggs of reptiles are leathery while those of amphibians are soft and gelatinous.
Amphibians are comfortable in water and on land, whereas reptiles are restricted to land.
Turtles are not amphibians ,they are reptiles.
The difference between amphibian and reptiles are :-
Amphibian means “living double lives”, meaning that they live two lives: one in water with gills and the other on land by growing lungs as they age. They are vertebrates and cold blooded (ectothermic). Early amphibians, a crucial link from fish to terrestrial reptiles, were the first animals to leave the sea and venture onto the land.
Reptiles (meaning “to creep stealthily under cover of darkness”) are a group of animals that have scales (or modified scales), breathe air, and usually lay eggs. Most reptiles live on land and reproduce by laying eggs. Crocodiles, snakes, lizards, and turtles are all examples of reptiles.
a)Different species of reptiles live on land, in water, or both on land and in water. However, all amphibians are born in water and spend early part of their lives in water in form of larvae. Through a process of metamorphosis the larvae of amphibians grow into adults which are quite different from the larvae. The adults usually live on land, however some may live on land as well as in water.
b)Amphibians breathe through lungs and gills both while those reptiles just through lungs.
c)Amphibians lay legs without covering while reptiles lay eggs with tough coverings.
d)Reptiles include four groups of animals – lizards and snakes, turtles, crocodiles, and tuatara. Amphibians include three groups of animals – frogs and toads, salamanders and caecillians.
e)Reptiles are generally bigger in size than amphibians.
Turtles are reptiles. They have scaly skin. Amphibians spend most of the time in water. Amphibians have smooth skin. Amphibians are mostly like fish. They spend most time in water, and less time on land. Reptiles spend most of the time on land, and less in water.
I just want to break down the word in respect to etymology.
“Amphi” means “of both kinds” and “bios” means life
Turtles are reptile, although some are amphibious. There are fresh water turles and also sea turtles. Some sea turles cannot move around very well on land and thus except for the journey from nest to the sea as a hatchling, male sea turtles never leave the sea.
Despite the fact that many turtles spend a lot of time underwater, they do breathe air and must surface to fill their lungs. Aquatic respiration is being studied, because some species have “large cloacal cavities that are lined with papillae (finger-like projections) which can take up dissolved oxygen from the water”. The process is similar to how fish respire, except they use gills (fish).
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