Answer:
(i)
Reptiles are the crawling vertebrates that are cold-blooded and have dry horn
scales.
(ii) They are mostly terrestrial and live in warmer regions.
(iii) They breathe through lungs. The heart is
three-chambered, except in crocodiles which have four-chambered hearts.
(iv) They lay eggs with tough coverings.
Examples: Snakes, Lizards, Crocodiles, Turtles, etc.
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