Question

what are the characteristics of reptiles

Answer 1

Reptiles are a varied group of a vertebrates (they have a backbone) that includes snakes, lizards, alligators, crocodiles, turtles, worm-lizards and caimans. ... Twocharacteristics enable reptiles to inhabit land environments to a greater extent than their amphibian ancestors: Scales or scutes.
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

Answer 2

$\huge\textbf{REPTILIA}$


→ These are first vertebrates fully adopted for life on dry land. Some live in water but they also return to the land for breeding.

→ The heart is incompletely 4 chambered having two auricles and a partly divided ventricle. (Crocodiles have 4 chambered heart)

→ Respiration occurs by lungs.

→ Two pairs of limbs are present in them which act as appendages.

→ Ex :- Lizards, Snakes, Tortoise, Crocodiles etc.
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