12th Class Biology PDF NotesChapterChapter NameMedium14RespirationEnglish Medium15HomeostasisEnglish Medium16Support and MovementEnglish Medium17Nervous CoordinationEnglish Medium18Chemical CoordinationEnglish Medium19BehaviourEnglish Medium20ReproductionEnglish Medium21Development and AgeingEnglish Medium22InheritanceEnglish Medium23Chromosome and DNAEnglish Medium24EvolutionEnglish Medium26BiotechnologyEnglish Medium27Biology and Human WelfareEnglish Medium More Subjects