UNIT- VIII: Ecology and Environment UNIT- VII: Type study of Periplaneta Americana UNIT- VI: Biology Human Welfare I UNIT- VI: Biology Human Welfare II UNIT- V: Locomotion Reproduction in Protozoa UNIT- IV: Animal Diversity II Phylum Chordata UNIT- III: Animal Diversity I invertebrate Phyla UNIT- II: Structural Organization in Animals UNIT- I: Diversity of Living World