Question

^{List out the characteristics that contribute to the success of reptiles on land​​​​​​}

Answer 1

Two characteristics enable reptiles to inhabit land environments to a greater extent than their amphibian ancestors:


Scales or scutes

The ability to lay hard-shelled or leathery-shelled eggs.
The shell of eggs provides a protective enclosure for the embryo to develop within, so reptiles can lay their eggs in a dry environment. Amphibians, on the other hand, require a damp environment to lay their very soft jelly-like eggs.
The largest reptiles include the leatherback turtle at two meters long and weighing between 250-700 kg, the Komodo dragon is more than three meters long and about 70 kg in weight and the saltwater crocodile, who weighs between 600-1000 kg and is four to five and a half meters long.
General Features
Let's find out what makes a reptile a reptile.
All reptiles have a backbone, which means they are vertebrates.
All reptiles produce eggs. Most reptiles lay hard-shelled eggs, but a few give birth to live young.
All reptiles have scales or scutes. Scales are small, hard plates that are made from a protein called keratin. Scutes are the shells of turtles and the armor of crocodiles and are very similar to scales. Unlike scales, they are bony structures and develop in a deeper skin level than scales. Both scales and scutes provide physical protection and help prevent water loss through the skin.
Reptiles are ectothermic or cold-blooded, which means they cannot control their own body temperature. They must work with their environment to increase or decrease their body temperature. Basking in the sun raises their body temperature, and they move faster when warm. Retreating to shady areas when they get hot lowers their body temperature.