Muscular tail, streamlined body shape, scaly skin and two-chambered heart are the characteristic features of Class _________.
Pisces
Aves
Reptilia
Amphibia
Observe the given set of characteristics and identify the class of vertebrata they belong to:
i. Streamlined body
ii. Cold blooded
iii. Two chambered heart
Organisms which have a hard scaly skin and lay eggs outside water, belong to the class