Answer:
General features of class?Reptilia are as follows
(i) These animals possess dry skin, have scales and live in
warmer regions as they are cold-blooded animals.
(ii) They lay eggs with tough covering on land and do not
lay eggs in water like amphibians.
(iii) Lungs are the respiratory organs in them.
(iv) Reptiles bear two pairs of pentadactyl (five digits) limbs.
(v) Most of them have three-chambered heart except crocodile,
which have four-chambered heart.
(vi) Sexes are separate. Fertilisation is internal.
(vii) Embryo of these animals is protected inside the egg by
extraembryonic membranes.
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