Write features of class reptilia.

List features of class aves'

List features of mammals

Write important features of a sedimentary cycle in an ecosystem.

Frogs, Salamanders, Tortoise and Crocodiles are seen in both water and land. But they are classified into two different classes ofthe phylum Vertebrata. Evaluate this classification comparing salient features of each class.

XXY chromosome pattern is the characteristic feature of a genetic disorder. Write the name of the genetic disorder.

XXY chromosome pattern is the characteristic feature of a genetic disorder. write the phenotypic expressions of this disorder.

Write the salient features of phylum Nemathelminthes.