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Biology Notes for Class 12 Chapter 16: Environment Chapter Summary            Major issues relating to environmental pollution and depletion of valuable natural resources vary in dimension from local, regional to global levels. Air pollution primarily results from burning of fossil fuel, e.g., coal and petroleum, in industries and in automobiles. They […]

Biology Notes for Class 12 Chapter 14: Ecosystem Chapter Summary            An ecosystem is a structural and functional unit of nature and it comprises abiotic and biotic components. Abiotic components are inorganic materials- air, water and soil, whereas biotic components are producers, consumers and decomposers. Each ecosystem has characteristic physical structure

Biology Notes for Class 12 Chapter 9: Strategies for Enhancement in Food Production Chapter Summary             Ø  Animal husbandry is the practice of taking care and breeding domestic animals by applying scientific principles. The ever-increasing demand of food from animals and animal products both in terms of quality and quantity

Biology Notes for Class 12 Chapter 7: Evolution Chapter Summary              The origin of life on earth can be understood only against the background of origin of universe especially earth. Most scientists believe chemical evolution, i.e., formation of biomolecules preceded the appearance of the first cellular forms of life. The

Biology Notes for Class 12 Chapter 6: Molecular Basis of Inheritance Chapter Summary            Ø  Nucleic acids are long polymers of nucleotides. While DNA stores genetic information, RNA mostly helps in transfer and expression of information. Though DNA and RNA both function as genetic material, but DNA being chemically and structurally

Biology Presentations for Class 12 Term 1 Chapter 1: Reproduction in Organism Click Here Chapter 2: Sexual Reproduction in Flowering Plants Click Here Chapter 3: Human Reproduction Click Here Chapter 4: Reproductive Health Click Here Chapter 5: Principles of Inheritance and Variation Click Here Chapter 6: Molecular Basis of Inheritance Click Here Chapter 7: Evolution

Biology Presentations for Class 12 Chapter 1: Reproduction in Organism Disclaimer: All contents are originally prepared by Shri K C Meena Ji, Principal, KVS.  Class 12 Biology Chapter 3 Human Reproduction Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants Class 12 Biology Chapter 13 Organism and Populations Class 12 Biology Chapter 12 Biotechnology

Biology Notes for Class 12 Chapter 5: Principles of Inheritance and Variation Chapter Summary            Ø Genetics is a branch of biology which deals with principles of inheritance and its practices. Progeny resembling the parents in morphological and physiological features has attracted the attention of many biologists. Mendel was the first

Biology Notes for Class 12 Chapter 4: Reproductive Health Chapter Summary           Reproductive health refers to a total well-being in all aspects of reproduction, i.e., physical, emotional, behavioural and social. Our nation was the first nation in the world to initiate various action plans at national level towards attaining a reproductively

Biology Notes for Class 12 Chapter 3: Human Reproduction Chapter Summary              Humans are sexually reproducing and viviparous. The male reproductive system is composed of a pair of testes, the male sex accessory ducts and the accessory glands and external genitalia. Each testis has about 250 compartments called testicular lobules,