{"id":9463,"date":"2018-02-12T11:25:33","date_gmt":"2018-02-12T05:55:33","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/?p=9463"},"modified":"2019-03-01T17:07:29","modified_gmt":"2019-03-01T11:37:29","slug":"biodiversity-conservation-class-12-notes-biology","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/biodiversity-conservation-class-12-notes-biology\/","title":{"rendered":"Biodiversity and Conservation class 12 Notes Biology"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mycbseguide.com\/blog\/biodiversity-conservation-class-12-notes-biology\/#CBSE_Guide_Biodiversity_and_Conservation_class_12_Notes_Biology\" >CBSE Guide Biodiversity and Conservation class 12 Notes Biology<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mycbseguide.com\/blog\/biodiversity-conservation-class-12-notes-biology\/#Class_12_Biology_notes_Chapter_15_Biodiversity_and_Conservation\" >Class 12 Biology notes Chapter 15 Biodiversity and Conservation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/biodiversity-conservation-class-12-notes-biology\/#CBSE_Class_12_Biology_Revision_Notes_Chapter_15_Biodiversity_and_Conservation\" >CBSE Class 12 Biology Revision Notes Chapter 15 Biodiversity and Conservation<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/biodiversity-conservation-class-12-notes-biology\/#BIODIVERSITY_IN_INDIA\" >BIODIVERSITY IN INDIA<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mycbseguide.com\/blog\/biodiversity-conservation-class-12-notes-biology\/#Patterns_of_Biodiversity\" >Patterns of Biodiversity<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mycbseguide.com\/blog\/biodiversity-conservation-class-12-notes-biology\/#The_importance_of_Species_Diversity_to_the_Ecosystem\" >The importance of Species Diversity to the Ecosystem<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mycbseguide.com\/blog\/biodiversity-conservation-class-12-notes-biology\/#Loss_of_Biodiversity\" >Loss of Biodiversity<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/mycbseguide.com\/blog\/biodiversity-conservation-class-12-notes-biology\/#Causes_of_biodiversity_losses\" >Causes of biodiversity losses<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/mycbseguide.com\/blog\/biodiversity-conservation-class-12-notes-biology\/#Biodiversity_Conservation\" >Biodiversity Conservation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/mycbseguide.com\/blog\/biodiversity-conservation-class-12-notes-biology\/#How_do_we_conserve_Biodiversity\" >How do we conserve Biodiversity?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/mycbseguide.com\/blog\/biodiversity-conservation-class-12-notes-biology\/#CBSE_Class_12_Revision_Notes_and_Key_Points\" >CBSE Class 12 Revision Notes and Key Points<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong>Biodiversity and Conservation class 12 Notes Biology<\/strong> in PDF are available for free download in myCBSEguide mobile app. The best app for CBSE students now provides Biodiversity and Conservation class 12 Notes latest chapter wise notes for quick preparation of CBSE board exams and school-based annual examinations. Class 12 Biology notes on chapter 15 Biodiversity and Conservation are also available for download in CBSE Guide website.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_Guide_Biodiversity_and_Conservation_class_12_Notes_Biology\"><\/span><strong>CBSE Guide Biodiversity and Conservation class 12 Notes Biology<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>CBSE guide notes are the comprehensive notes which covers the latest syllabus of CBSE and NCERT. It includes all the topics given in NCERT class 12 Biology textbook. Users can download CBSE guide quick revision notes from myCBSEguide mobile app and my CBSE guide website.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Class_12_Biology_notes_Chapter_15_Biodiversity_and_Conservation\"><\/span><strong>Class 12 Biology notes Chapter 15 Biodiversity and Conservation<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Download CBSE class 12th revision notes for chapter 15 Biodiversity and Conservation in PDF format for free. Download revision notes for Biodiversity and Conservation class 12 Notes and score high in exams. These are the Biodiversity and Conservation class 12 Notes prepared by team of expert teachers. The revision notes help you revise the whole chapter 15 in minutes. Revision notes in exam days is one of the best tips recommended by teachers during exam days.<\/p>\n<p style=\"text-align: center;\"><strong><a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-12-biology\/1298\/cbse-revision-notes\/7\/\">Download Revision Notes as PDF<\/a><\/strong><\/p>\n<h2 style=\"text-align: left;\"><span class=\"ez-toc-section\" id=\"CBSE_Class_12_Biology_Revision_Notes_Chapter_15_Biodiversity_and_Conservation\"><\/span><strong>CBSE Class 12 Biology Revision Notes Chapter 15 Biodiversity and Conservation<br \/>\n<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Biodiversity or biological diversity is the occurrence of different types of ecosystems, different species of organisms and their variant like biotypes, ecotypes and gene adapted to different climates and environments of different regions including their interactions and processes.This term was coined by Edward Wilson.The vast array of species of micro-organisms, algae, fungi, plants and animals occurring on the earth either in the terrestrial or aquatic habitats and the ecological complexes of which they are a part comprises biodiversity . Diversity ranges from macromolecules to biomes.<\/p>\n<p>The important diversity at the levels of biological organization are-<\/p>\n<p>I. Genetic Diversity- a single species might show high diversity at the genetic level over its distributional range.\u00a0<em>Rauwolfia vomitoria\u00a0<\/em>shows genetic variation in terms of concentration and potency of chemical reserpine India has more than 50,000 genetically different strains of rice and 1000 varieties of mango.<\/p>\n<p>II. Species Diversity- diversity at species level for example, the Western Ghats have more amphibian species diversity than the Eastern Ghats.<\/p>\n<p>III. Ecological Diversity- deserts, rain forests, mangroves, coral reefs, wetlands, estuaries and alpine meadows are types of ecological diversity.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/revise\/12\/biology\/12_bio_ch15_01.jpg\" alt=\"Biodiversity and Conservation class 12 Notes Biology\" width=\"413\" height=\"392\" \/><\/p>\n<p>Biodiversity and its conservation are vital environmental issues of international concern as more and more people around the world begin to realize the critical importance of biodiversity for survival and well-being on this planet.<\/p>\n<p>\u00b7 According to the IUCN, the total number of plant and animal species described so far is about 1.5 million but still many species are yet to discovered and described.<\/p>\n<p>\u00b7 More than 70% of all the species recorded are animals while rest are plants including algae, fungi, bryophytes, gymnosperms and angiosperms. Among animals, 70% of total are insects.<\/p>\n<p>\u00b7 The number of fungi species in the world is more than the combined total of the species of fishes, amphibians, reptiles and mammals.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"BIODIVERSITY_IN_INDIA\"><\/span><strong>BIODIVERSITY IN INDIA<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u2022\u00a0India is one of the twelve mega biodiversity countries of the world.<br \/>\n\u2022\u00a0India has only 2.4% of the land area of the world, it has 8.1% of the global species biodiversity.<br \/>\n\u2022\u00a0There are about 45,000 species of plants and about 90,000-1,00,000 species of animals.<br \/>\n\u2022\u00a0New species are yet to be discovered and named.<br \/>\n\u2022\u00a0Applying Robert May\u2019s global estimate, only 22% of the total species have been recorded, India has probably more than 1,00,000 species of plants and 3,00,000 species of animals to be discovered and described<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Patterns_of_Biodiversity\"><\/span><strong>Patterns of Biodiversity<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>a) <\/strong><strong>Latitudinal gradients- <\/strong>the diversity of plants and animals is not uniform throughout the world and shows uneven distribution. This distribution pattern is along the latitudinal gradient in diversity. Species diversity decreases as we move away from the equator towards the poles. Tropics harbor more species than temperate or polar areas.Amazonian Rainforest has the greatest biodiversity on earth. It has more than 40000 species of plants, 1,25,000 species of insects, 300 species of fish, 427 of amphibian and 378 of reptiles, 1300 species of birds and 427 of mammals. Various hypothesis has been proposed regarding this such as-<\/p>\n<p>a) Speciation is a function of time unlike temperate regions subjected to frequent glaciation in past, tropical latitudes have remained relatively undisturbed for millions of years and thus had long evolutionary time for species diversification.<\/p>\n<p>b) Tropical environments unlike temperate ones are less seasonal and more constant and predictable which promote niche specialization and lead to a greater species diversity.<\/p>\n<p>c)There is more solar energy available in the tropics which contribute to higher productivity\u00a0 this in turn contribute indirectly to greater diversity.<\/p>\n<p><strong>b) Species-Area relationships <\/strong><\/p>\n<p>\u2022 Alexander Von Humboldt has observed that within a region, species richness gets increased when explored area is increased, but only up to a limit.<br \/>\n\u2022\u00a0The relationship between species richness and area for a number of taxa like angiospermic plants, fresh water fishes and birds is found to be a rectangular hyperbola.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/revise\/12\/biology\/12_bio_ch15_02.jpg\" alt=\"Biodiversity and Conservation class 12 Notes Biology\" width=\"243\" height=\"204\" \/><\/p>\n<p>On logarithmic scale, the relationship is a straight line described by the equation-<\/p>\n<p>log S = log C + Z log A.<\/p>\n<p>Where, S= species, A= Area, Z= slope of the line, C =Y- intercept.<\/p>\n<ul>\n<li>Ecologists have discovered that the value of Z lies in range of 0.1 to 0.2 regardless of taxonomic group of the region.<\/li>\n<li>\u00a0 In very large area like continents, Z value ranges between 0.6 &amp; 1.2.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"The_importance_of_Species_Diversity_to_the_Ecosystem\"><\/span><strong>The importance of Species Diversity to the Ecosystem<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The communities with more species are generally more stable than those with less species. A stable community should not be show too much variation in productivity from year to year.<\/p>\n<p>Rich biodiversity is essential for ecosystem health and imperative for the very survival of human race on this planet.<\/p>\n<p><strong>Rivet popper hypothesis &#8211; <\/strong>given by<strong>\u00a0<\/strong>Paul Ehrlich. In an airplane (ecosystem) all parts are joined together using thousands of rivets (species). If every passenger travelling in it starts popping a rivet to take home (causing a species to become extinct), it may not affect flight safety (proper functioning of the ecosystem) initially, but as more and more rivets are removed, the plane becomes dangerously weak over a period of time. Furthermore, which rivet is removed may also be critical. Loss of rivets on the wings (key species that drive major ecosystem functions) is obviously a more serious threat to flight safety than loss of a few rivets on the seats or windows inside the plane<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Loss_of_Biodiversity\"><\/span><strong>Loss of Biodiversity<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The biological wealth of our planets have been declining rapidly due to three factors &#8211; Population, Urbanisation and Industrialisation.The IUCN Red List (2004) documents the extinction of 784 species (including 338 vertebrates, 359 invertebrates and 87 plants) in the last 500 years. Some examples of recent extinctions include the dodo (Mauritius), quagga (Africa), thylacine (Australia), Steller\u2019s Sea Cow (Russia) and three subspecies (Bali, Javan, Caspian) of tiger. In last 20 years, 27 species have been disappeared.\u00a0In general, loss of biodiversity in a region may lead to<\/p>\n<p>a. Decline in plant production<\/p>\n<p>b. Lowered resistance to environmental perturbations, drought, and flood.<\/p>\n<p>c. Increased variability in ecosystem processes such as productivity, water use, and pest and disease cycles.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Causes_of_biodiversity_losses\"><\/span><strong>Causes of biodiversity losses<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Faster rates of species extinctions are largely due to human activities. The four major causes are called <strong>\u2018The Evil Quartet\u2019.<\/strong><\/p>\n<p>1) <strong>Habitat loss and fragmentation<\/strong>&#8211; is the most important cause of animals and plants extinction. The amazon rain forest (lungs of the planet) having millions of species is being cut and cleared for cultivating soya beans or for conversion to grasslands. When large habitats are broken up into small fragments due to various human activities, mammals are birds requiring large territories migrate and badly affected.<\/p>\n<p>2) <strong>Over-exploitation<\/strong>&#8211; \u00a0\u00a0 When biological system is over exploited by man for the natural resources ,it results in degradation and extinction of the resources ,\u00a0<em>e.g Steller\u2019s sea cow, passenger pigeon etc.<\/em>\u00a0Many marine fish population are over harvested, endangering the continued existence of some important species.<\/p>\n<p>3) <strong>Alien species invasions<\/strong>&#8211; when alien species enters intentionally or unintentionally, some of them turn invasive and cause decline or extinction of indigenous species.The Nile perch introduced into Lake Victoria in east Africa led eventually to the extinction of an ecologically unique assemblage of more than 200 species of cichlid fish in the lake. Invasive weeds species like carrot grass (parthenium), Lantana and water hyacinth causing threats to indigenous species.<\/p>\n<p>4) <strong>Co-extinctions<\/strong>&#8211; when a species becomes extinct, the plant and animal species associated with it also become extinct. When a host fish species becomes extinct, its unique assemblage of parasites also becomes extinct.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Biodiversity_Conservation\"><\/span><strong>Biodiversity Conservation<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>We should conserve the biodiversity due to following groups of regions-<\/p>\n<p>I. The <strong>narrowly utilitarian<\/strong>&#8211; human obtain countless direct economic benefits from nature like food, firewood, fibres, construction material, medicinal plants and industrial products. With increasing resources put into \u2018bio-prospecting\u2019 nations endowed with rich biodiversity can expect to reap enormous benefits.<\/p>\n<p>II. The <strong>Broadly Utilitarian<\/strong>&#8211; biodiversity plays a major role in ecosystem services that nature provides. Productions of Oxygen during photosynthesis, pollination without natural pollinator, pleasure from nature are priceless.<\/p>\n<p>III. <strong>Ethical<\/strong>&#8211; for conserving biodiversity relates to what we own to millions of plants, animals and microbes species with whom we share this planet. Every species has an intrinsic value although it may not be of current or any economic value to us. It is our moral duty to care for their well-being and pass on our biological legacy in good order to future generations.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_do_we_conserve_Biodiversity\"><\/span><strong>How do we conserve Biodiversity?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>When whole ecosystem is conserved, all its biodiversity is also protected. There are two ways of conservation of biodiversity-<\/p>\n<p><strong>In situ ( on site) conservation<\/strong>&#8211; conservationists have identified for maximum protection certain \u2018biodiversity hotspots\u2019 regions with very high levels of species richness and high degree of endemism, species found in that region and not found anywhere else. There are 34 biodiversity hot spots in the world. These hotspots are also regions of accelerated habitat loss. India has 14 biosphere reserves, 90 national parks and 448 wildlife sanctuaries.<\/p>\n<p><strong>Ex situ (off site) conservation<\/strong>&#8211; in this method, threatened animals and plants are taken out from their natural habitat and placed in special setting when they be protected and given special care . Zoological parks, Botanical Gardens and wildlife safari parks are used for this purpose. Now gemetes of threatened species can be preserved in viable and fertile condition for long periods of time using cryopreservation technique. Eggs can be fertilized in vitro and plants can be propagated using tissue culture methods.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/review\/4937_1.png\" alt=\"Biodiversity and Conservation class 12 Notes Biology\" width=\"250\" height=\"263\" \/><\/p>\n<p>The historic convention on Biological Diversity (The Earth Summit) held in Rio de Janeiro in 1992,called upon all nations to take appropriate measures for conservation of biodiversity and the World Summit on \u00a0sustainable development held in 2002 in Johannesburg, South Africa,\u00a0190 countries pledged their commitment to achieve by 2010, a significant reduction in the current rate of biodiversity loss at global, regional and local levels.<strong>\u00a0 \u00a0\u00a0<\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_Class_12_Revision_Notes_and_Key_Points\"><\/span><strong>CBSE Class 12 Revision Notes and Key Points<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Biodiversity and Conservation class 12 Notes Biology. CBSE quick revision note for class-12 Chemistry Physics Math\u2019s, Biology and other subject are very helpful to revise the whole syllabus during exam days. The revision notes covers all important formulas and concepts given in the chapter. Even if you wish to have an overview of a chapter, quick revision notes are here to do if for you. These notes will certainly save your time during stressful exam days.<\/p>\n<ul>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-physics\/1251\/cbse-revision-notes\/7\/\">Physics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-chemistry\/1267\/cbse-revision-notes\/7\/\">Chemistry<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-mathematics\/1284\/cbse-revision-notes\/7\/\">Mathematics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-biology\/1298\/cbse-revision-notes\/7\/\">Biology<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-accountancy\/1315\/cbse-revision-notes\/7\/\">Accountancy<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-economics\/1327\/cbse-revision-notes\/7\/\">Economics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-business-studies\/1727\/cbse-revision-notes\/7\/\">Business Studies<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-computer-science\/1851\/cbse-revision-notes\/7\/\">Computer Science<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-informatics-practices\/1873\/cbse-revision-notes\/7\/\">Informatics Practices<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-english-core\/1855\/cbse-revision-notes\/7\/\">English Core<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-history\/1869\/cbse-revision-notes\/7\/\">History<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-physical-education\/1877\/cbse-revision-notes\/7\/\">Physical Education<\/a><\/li>\n<\/ul>\n<p>To download Biodiversity and Conservation class 12 Notes Biology, sample paper for class 12 Physics, Chemistry, Biology, History, Political Science, Economics, Geography, Computer Science, Home Science, Accountancy, Business Studies and Home Science; do check myCBSEguide app or website. myCBSEguide provides sample papers with solution, test papers for chapter-wise practice, NCERT Biodiversity and Conservation, NCERT Exemplar Biodiversity and Conservation, quick revision notes for ready reference, CBSE guess papers and CBSE important question papers. Sample Paper all are made available through\u00a0<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\"><strong>the best app for CBSE students<\/strong><\/a>\u00a0and myCBSEguide website.<\/p>\n<ul>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/reproduction-organisms-class-12-notes-biology\/\">Reproduction in Organisms class 12 Notes Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/sexual-reproduction-flowering-plants-class-12-notes-biology\/\">Sexual Reproduction in Flowering Plants class 12 Notes Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/human-reproduction-class-12-notes-biology\/\">Human Reproduction class 12 Notes Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/reproductive-health-class-12-notes-biology\/\">Reproductive Health class 12 Notes Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/principles-inheritance-variation-class-12-notes-biology\/\">Principles of Inheritance and Variation class 12 Notes Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/molecular-basis-inheritance-class-12-notes-biology\/\">Molecular Basis of Inheritance class 12 Notes Biology\u00a0\u00a0<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/evolution-class-12-notes-biology\/\">Evolution class 12 Notes Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/human-health-disease-class-12-notes-biology\/\">Human Health and Disease class 12 Notes Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/microbes-human-welfare\/\">Strategies for Enhancement in Food Production class 12 Notes Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/microbes-human-welfare-class-12-notes-biology\/\">Microbes in Human Welfare class 12 Notes Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/biotechnology-principles-processes-class-12-notes-biology\/\">Biotechnology Principles and Processes class 12 Notes Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/biotechnology-applications-class-12-notes-biology\/\">Biotechnology and its Applications class 12 Notes Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/organisms-populations-class-12-notes-biology\/\">Organisms and Populations class 12 Notes Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ecosystem-class-12-notes-biology\/\">Ecosystem class 12 Notes Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/environmental-issues-class-12-notes-biology\/\">Environmental Issues class 12 Notes Biology<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Biodiversity and Conservation class 12 Notes Biology in PDF are available for free download in myCBSEguide mobile app. The best app for CBSE students now provides Biodiversity and Conservation class 12 Notes latest chapter wise notes for quick preparation of CBSE board exams and school-based annual examinations. Class 12 Biology notes on chapter 15 Biodiversity &#8230; <a title=\"Biodiversity and Conservation class 12 Notes Biology\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/biodiversity-conservation-class-12-notes-biology\/\" aria-label=\"More on Biodiversity and Conservation class 12 Notes Biology\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":9404,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48,456],"tags":[616,585,457,150,426,240],"class_list":["post-9463","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cbse-class-12","category-revision-notes","tag-biodiversity-and-conservation","tag-biology-notes","tag-cbse-notes","tag-cbse-notes-and-key-points","tag-quick-revision","tag-quick-revision-notes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Biodiversity and Conservation class 12 Notes Biology<\/title>\n<meta name=\"description\" content=\"Biodiversity and Conservation class 12 Notes Biology chapter 15 in PDF format for free download. 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