-
CHAPTER 15 BIODIVERSITY AND CONSERVATION
Read More: CHAPTER 15 BIODIVERSITY AND CONSERVATION15.1 Biodiversity15.2 Biodiversity Conservation If an alien from a distant galaxy were to visit our planetEarth, the first thing that would amaze and baffle himwould most probably be the enormous diversity of lifethat he would encounter. Even for humans, the rich varietyof living organisms with which they share this planet neverceases to astonish and fascinate…
-
CHAPTER 14 ECOSYSTEM
Read More: CHAPTER 14 ECOSYSTEM14.1 Ecosystem–Structureand Function14.2. Productivity14.3 Decomposition14.4 Energy Flow14.5 Ecological Pyramids14.6 Ecological Succession14.7 Nutrient Cycling14.8 Ecosystem Services An ecosystem can be visualised as a functional unit ofnature, where living organisms interact among themselvesand also with the surrounding physical environment.Ecosystem varies greatly in size from a small pond to alarge forest or a sea. Many ecologists regard the…
-
CHAPTER 12 BIOTECHNOLOGY AND ITSAPPLICATIONS
Read More: CHAPTER 12 BIOTECHNOLOGY AND ITSAPPLICATIONS12.1 BiotechnologicalApplications inAgriculture12.2 BiotechnologicalApplications inMedicine12.3 Transgenic Animals12.4 Ethical Issues Biotechnology, as you would have learnt from theprevious chapter, essentially deals with industrial scaleproduction of biopharmaceuticals and biologicals usinggenetically modified microbes, fungi, plants and animals.The applications of biotechnology include therapeutics,diagnostics, genetically modified crops for agriculture,processed food, bioremediation, waste treatment, andenergy production. Three critical research areas ofbiotechnology…
-
CHAPTER 11 BIOTECHNOLOGY : PRINCIPLESAND PROCESSES
Read More: CHAPTER 11 BIOTECHNOLOGY : PRINCIPLESAND PROCESSES11.1 Principles of Biotechnology11.2 Tools of Recombinant DNATechnology11.3 Processes of RecombinantDNA Technology Biotechnology deals with techniques of using liveorganisms or enzymes from organisms to produce productsand processes useful to humans. In this sense, makingcurd, bread or wine, which are all microbe-mediatedprocesses, could also be thought as a form ofbiotechnology. However, it is used in a…
-
CHAPTER 10 MICROBES IN HUMAN WELFARE
Read More: CHAPTER 10 MICROBES IN HUMAN WELFARE10.1 Microbes in HouseholdProducts10.2 Microbes in IndustrialProducts10.3 Microbes in SewageTreatment10.4 Microbes in Production ofBiogas10.5 Microbes as BiocontrolAgents10.6 Microbes as Biofertilisers Besides macroscopic plants and animals, microbes arethe major components of biological systems on this earth.You have studied about the diversity of living organismsin Class XI. Do you remember which Kingdoms amongthe living organisms contain micro-organisms?…
-
CHAPTER 9 STRATEGIES FOR ENHANCEMENTIN FOOD PRODUCTION
Read More: CHAPTER 9 STRATEGIES FOR ENHANCEMENTIN FOOD PRODUCTION9.1 Animal Husbandry9.2 Plant Breeding9.3 Single Cell Proteins9.4 Tissue Culture With ever -increasing population of the world,enhancement of food production is a major necessity.Biological principles as applied to animal husbandry andplant breeding have a major role in our efforts to increasefood production. Several new techniques like embryotransfer technology and tissue culture techniques are goingto play…
-
CHAPTER 7 EVOLUTION
Read More: CHAPTER 7 EVOLUTION7.1 Origin of Life7.2 Evolution of Life Forms – ATheory7.3 What are the Evidencesfor Evolution?7.4 What is AdaptiveRadiation?7.5 Biological Evolution7.6 Mechanism of Evolution7.7 Hardy – WeinbergPrinciple7.8 A Brief Account ofEvolution7.9 Origin and Evolution ofMan Evolutionary Biology is the study of history of life formson earth. What exactly is evolution? To understand thechanges in flora and…
