Class-9-Science

Diversity in Living Organisms-Theory Session-25

This session briefly describes the basic characteristic features of group aves and mammals. Also there is brief comparison of different tetrapods..

Improvement in Food Resources Theory Session-1

This session is an introduction to the food resources, their availability and improvement.

Improvement in Food Resources Theory Session-2

This session briefly describes the methods followed to improve the production of crops. It explains the hybridization and genetic manipulation method to improve crop variety.