Maktab

F.Sc. Biology Book2, CH 24; Evolution

This chapter covers: Introduction; Concept of evolution vs special creation; Evolution from prokaryotes to eukaryotes; Inheritance of acquired charateristics; Evidence of evolution; Natural selection and artificial selections Population, Gene pool; Allele; Genotypic frequencies Hardy-Weinberg Theorem; Factors affecting gene frequencies; Endangered species

F.Sc. Biology Book2, CH 25; Ecosystem

This chapter covers: Introduction; Ecosystem; Biosphere; Autecology; synecology Biotic and Abiotic componentsa and interaction between them; Food Web Succession; Predation and its significance; Parasitism and its significance Symbiosis; Mutualism; Commensalism; Grazing; Biogeochemical cycles Flow of energy in food chain of an ecosystem

F.Sc. Biology Book2, CH 26; Some Major Ecosystems

This chapter covers: Climate; Aquatic of Hydrospheric Ecosystem; Productivity of Aquatic Ecosystem Intervention of man in aquatic environment; Terrestrial ecosystem Adaptations and Divisio of terrestrial ecosystem; Some major ecosytems in Pakistan