Biology 12 Biology 12

SECTION I - BOTANY
UNIT I: GENETICS AND EVOLUTION
  • Genetic Basis of Inheritance
  • Deviations from Mendelian ratio (gene interactionincomplete dominance, co-dominance, multiple alleles and Inheritance of blood groups)
  • Genetics its nature
  • expression and regulation: Modern concept of gene in brief-cistron
  • muton and recon
  • structure of DNA as given by Watson and Crick’s model
  • DNA Packaging
  • semi conservative replication of eukaryotic DNA
  • Protein Synthesis
UNIT II: BIOTECHNOLOGY AND ITS APPLICATION
  • Biotechnology - Process and Application
  • Transposons
  • Plasmids
  • Bacteriophages; Producing Restriction Fragments
  • Preparing and cloning a DNA Library
  • Gene Amplification (PCR)
  • Application of Biotechnology in Agriculture – BT crops Biosafety Issues (Biopiracy and patents)
UNIT III: BIOLOGY AND HUMAN WELFARE
  • Enhancement in Food Production
  • Plant Breeding
  • Tissue Culture: Concept of Cellular
  • Totipotency
  • Requirements of Tissue Culture (in brief)
  • Callus Culture
  • Suspension Culture
  • Single Cell Protein
  • Biofortification
  • Microbes in Human Welfare
  • Microbes in Household food processing
  • Microbes in Industrial Production
  • Microbes in Sewage Treatment
  • Microbes in Biogas (energy) Production
  • Microbes as Biocontrol Agents
  • Microbes as Biofertilizers
UNIT IV: PLANT PHYSIOLOGY
  • Photosynthesis
  • Autotrophic nutrition Site of Photosynthesis Photosynthetic Pigments and their role
  • Light-Dependent Reactions (Cyclic and non-cyclic photophosphorylation) Light-Independent Reactions (C3 and C4 Pathways) Chemiosmotic hypothesis
  • Photorespiration
  • Factors affecting Photosynthesis
  • Law of limiting factors
  • Respiration
  • ATP as currency of Energy Mechanism of Aerobic (Glycolysis TCA Cycle and Electron Transport System)
  • Anaerobic Respiration
  • Fermentation Exchange of gases Amphibolic pathway
  • Respiratory quotient of Nutrients
  • Significance of Respiration
UNIT V: REPRODUCTION IN ORGANISMS
  • Reproduction in Plants
  • Modes of Reproduction (Asexual and Sexual)
  • Asexual reproduction; uniparental modesvegetative propagation
  • micropropagation Sexual Reproduction: structure of flower Development of male gametophyte
  • Structure of anatropous ovule
  • Development of female Gametophyte
  • Pollination: Types and Agencies
  • Outbreeding devices; pollen-pistil interaction
  • Post-fertilization changes (development of endosperm and embryo
  • development of seed and formation of fruit) Special modes-apomixis
  • parthenocarpy
  • polyembryony
  • Significance of seed and fruit formation
UNIT VI: ECOLOGY AND ENVIRONMENT
  • Organisms and Environment -I : Habitat and Niche
  • Ecosystems: Patterns
  • components
  • productivity and decomposition
  • energy flow; pyramids of number
  • biomass
  • energy; nutrient cycling (carbon and phosphorous)
  • Ecological succession
  • Ecological servicescarbon fixation
  • pollination
  • oxygen release. Environmental issues: agrochemicals and their effects
  • solid waste management
  • Green house effect and global warming
  • ozone depletion
  • deforestation
  • case studies (any two)
SECTION II – ZOOLOGY
UNIT I: GENETICS AND EVOLUTION
  • Origin and the Evolution of Life
  • Origin of Life: Early Earth
  • Spontaneous
  • assembly of organic compounds
  • Evolution: Darwin’s contribution
  • Modern Synthetic Theory of evolution
  • Biological Evidences
  • Mechanism of evolution; Gene flow and genetic drift; HardyWeinberg principle; Adaptive radiation
  • Origin and Evolution of Human being
  • Chromosomal Basis of Inheritance
  • The Chromosomal Theory
  • Linkage and Crossing Over
  • Sex-linked Inheritance (Haemophilia and colour blindness)
  • Sex Determination in Human being birds honey bee
  • Chromosomal disorders in human: Down’s syndrome
UNIT II: BIOTECHNOLOGY AND ITS APPLICATION
  • Genetic Engineering and Genomics
  • DNA Finger Printing
  • Genomics and Human Genome Project
  • Biotechnological Applications in Health: Human insulin and vaccine production
  • Gene Therapy
  • Transgenic animals
UNIT III: BIOLOGY AND HUMAN WELFARE
  • Human Health and Diseases
  • Concepts of Immunology: Immunity Types
  • Vaccines
  • Structure of Antibody
  • Antigen-Antibody Complex
  • Antigens on blood cells
  • Adolescence, drug and alcohol abuse
  • Animal Husbandry
  • Management of Farms and Farm Animals
  • Dairy
  • Poultry
  • Animal Breeding
  • Bee-Keeping
  • Fisheries
  • Sericulture Lac culture
UNIT IV: HUMAN PHYSIOLOGY
  • Circulation
  • Blood composition and coagulation
  • Blood groups
  • Structure and pumping action of Heart
  • Blood Vessels
  • Pulmonary and Systemic Circulation
  • Heart beat and Pulse
  • Rhythmicity of Heart beat
  • Cardiac output
  • Regulation of cardiac activity
  • Blood related disorders: Hypertension, coronary artery disease, angina pectoris, and heart failure
  • Lymphatic System (Brief idea): Composition of lymph and its functions
  • Excretion and osmoregulation
  • Modes of excretion-Ammonotelism
  • ureotelism
  • uricotelism
  • Excretory System
  • Composition and formation of urine
  • Role of Kidney in Osmoregulation
  • Regulation of kidney function: reninangiotensin
  • ADH and Diabetes inspidus
  • role of other organs in excretion
  • Disorders; Kidney failure
  • Dialysis
  • Kidney stone (renal calculi)
  • Transplantation
  • Uraemia
  • nephritis
  • Control and Co-ordination
  • Nervous System Structure and functions of brain and Spinal cord
  • brief idea about PNS and ANS
  • Transmission of nerve impulse
  • Reflex action
  • Sensory receptors (eye and ear)
  • Sensory perception
  • general idea of other sense organs
  • Endocrine System Endocrine glands Hormones and their functions Mechanism of hormone action
  • Hormones as messengers and regulators
  • Hormonal imbalance and diseases: Common disorders (Dwarfism, Acromegaly, cretinism, goiter, exopthalmic goiter, Diabetes mellitus, Addison’s disease)
UNIT V: REPRODUCTION IN ORGANISMS
  • Human Reproduction
  • Histology of testis and ovary
  • Reproductive cycle
  • Production of gametes
  • Embryo development up to three germinal layers
  • Pregnancy, placenta, parturition and lactation (Elementary idea)
  • Reproductive health-birth control
  • Contraception and sexually transmitted diseases.MTP
  • Amniocentesis; Infertility and assisted reproductive technologiesIVF
  • ZIFT, GIFT (elementary idea for general awareness)
UNIT VI: ECOLOGY AND ENVIRONMENT
  • Organisms and Environment-II
  • Population and ecological adaptations: population interactions-mutualism
  • competition
  • predation
  • parasitism
  • population attributes- growth, birth rate and death rate age distribution
  • Biodiversity and its conservationBiodiversity- concept, patterns, importance, loss
  • Threats to and need for biodiversity conservation
  • endangered organisms, extinction
  • biosphere reserves
  • Environmental issues: air pollution and its control
  • water pollution and its control and radioactive waste management. (Case studies any two)