{"id":22451,"date":"2018-11-29T11:41:41","date_gmt":"2018-11-29T06:11:41","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/?p=22451"},"modified":"2018-12-17T12:44:37","modified_gmt":"2018-12-17T07:14:37","slug":"cbse-question-paper-2005-class-12-biology","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2005-class-12-biology\/","title":{"rendered":"CBSE Question Paper 2005 class 12 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\/cbse-question-paper-2005-class-12-biology\/#Class_12_Biology_list_of_chapters\" >Class 12 Biology list of chapters<\/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\/cbse-question-paper-2005-class-12-biology\/#CBSE_Question_Paper_2005_class_12_Biology\" >CBSE Question Paper 2005 class 12 Biology<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2005-class-12-biology\/#General_Instructions\" >General Instructions:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2005-class-12-biology\/#SECTION_%E2%80%93_A\" >SECTION &#8211; A<\/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\/cbse-question-paper-2005-class-12-biology\/#SECTION_%E2%80%93_B\" >SECTION &#8211; B<\/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\/cbse-question-paper-2005-class-12-biology\/#Or\" >Or<\/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\/cbse-question-paper-2005-class-12-biology\/#SECTION_%E2%80%93_C\" >SECTION &#8211; C<\/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\/cbse-question-paper-2005-class-12-biology\/#Or-2\" >Or<\/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\/cbse-question-paper-2005-class-12-biology\/#SECTION_%E2%80%93_D\" >SECTION &#8211; D<\/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\/cbse-question-paper-2005-class-12-biology\/#Or-3\" >Or<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2005-class-12-biology\/#Or-4\" >Or<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2005-class-12-biology\/#Or-5\" >Or<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2005-class-12-biology\/#Last_Year_Question_Paper_Class_12_Biology_2005\" >Last Year Question Paper Class 12 Biology 2005<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2005-class-12-biology\/#Previous_Year_Question_Paper_for_class_12_in_PDF\" >Previous Year Question Paper for class 12 in PDF<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong>CBSE Question Paper 2005 class 12 Biology<\/strong>\u00a0conducted by Central Board of Secondary Education, New Delhi in the month of March 2005. CBSE previous year question papers with solution are available in myCBSEguide mobile app and cbse guide website. The Best CBSE App for students and teachers is myCBSEguide which provides complete study material and practice papers to cbse schools in India and abroad.<\/p>\n<p style=\"text-align: center;\"><strong>CBSE Question Paper 2005 class 12 Biology\u00a0<\/strong><\/p>\n<p style=\"text-align: center;\"><strong><a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-12-biology\/1298\/cbse-last-year-papers\/3\/\">Download as PDF<\/a><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright\" src=\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/12%20biology%20book.jpg\" alt=\"CBSE Question Paper 2005 class 12 Biology\" width=\"128\" height=\"159\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Class_12_Biology_list_of_chapters\"><\/span>Class 12 Biology list of chapters<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li>Reproduction in Organisms<\/li>\n<li>Sexual Reproduction in Flowering Plants<\/li>\n<li>Human Reproduction<\/li>\n<li>Reproductive Health<\/li>\n<li>Principles of Inheritance and Variation<\/li>\n<li>Molecular Basis of Inheritance<\/li>\n<li>Evolution<\/li>\n<li>Human Health and Disease<\/li>\n<li>Strategies for Enhancement in Food Production<\/li>\n<li>Microbes in Human Welfare<\/li>\n<li>Biotechnology Principles and Processes<\/li>\n<li>Biotechnology and its Applications<\/li>\n<li>Organisms and Populations<\/li>\n<li>Ecosystem<\/li>\n<li>Biodiversity and Conservation<\/li>\n<li>Environmental Issues<\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_Question_Paper_2005_class_12_Biology\"><\/span>CBSE Question Paper 2005 class 12 Biology<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div>\n<div>\n<h3><span class=\"ez-toc-section\" id=\"General_Instructions\"><\/span><strong>General Instructions:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol>\n<li>This question paper consists of four sections A, B, C, and D. Section A contains\u00a05 questions of one mark each. Section B is of 10 questions of two marks each. C is of 10 questions of three marks each and Section D is of 3 questions\u00a0of five marks each.<\/li>\n<li>All questions are compulsory.<\/li>\n<li>There is no overall choice. However, an internal choice has been provided in one\u00a0question of 2 marks, one question of 3 marks and three questions of 5 marks\u00a0weightage. Attempt only one of the choices in such questions.<\/li>\n<li>Question numbers 1 to 5 are to be answered in one word or one sentence each.<\/li>\n<li>6 to 15 are to be answered in approximately 20-30 words each.<\/li>\n<li>Question numbers 16 to 25 are to be answered in approximately 30-50 words\u00a0each.<\/li>\n<li>Question numbers 26 to 28 are to be answered in approximately 80-120 words\u00a0each.<\/li>\n<\/ol>\n<hr \/>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"SECTION_%E2%80%93_A\"><\/span><strong>SECTION &#8211; A<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>1. What would happen to the rate of photosynthesis in <em>C<\/em>3C3 plants if the <em>C<\/em><em>O<\/em>2CO2 concentration level almost doubles from its present level in the atmosphere?<\/p>\n<p>2. In humans, starch digestion begins in the buccal cavity but stops in the Stomach. Why?<\/p>\n<p>3. Name the two most biodiversity-rich zones of India.<\/p>\n<p>4. Name the hormone that makes the plants more tolerant to various stresses.<\/p>\n<p>5. Name the t major groups of cells required in attaining specific immunity.<\/p>\n<hr \/>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"SECTION_%E2%80%93_B\"><\/span><strong>SECTION &#8211; B<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>6. Name the end products of aerobic and anaerobic glycolysis List two ways by which molecules of ATP are produced in glycolysis during aerobic respiration in a cell.<\/p>\n<p>7. Differentiate between Total Fertility Rate (TFR) and Replacement Level (RL).<\/p>\n<p>8. Due to uncontrolled excessive hunting the population of tigers in a forest becomes Zero. Discuss the long-term effects of this situation on the population of deer in that forest.<\/p>\n<p>9. Name the source gland of luteinizing hormone (LH). Mention the other hormone along with which it acts on its target cells\/organ. Give their two functions.<\/p>\n<p>10. Can all the four chambers of the human heart experience systole simultaneously? Explain justifying your answer.<\/p>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"Or\"><\/span><strong>Or<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>What do you call the circulatory fluid in the body of cockroach? Mention its three functions.<\/p>\n<p>11. Why\u2019d scientists pick hydrogen as the basis for MRI scanning? Name of the human body that do not appear in an MRI scan.<\/p>\n<p>12. What is thermal stratification? How does thermal stratification in temper ate lakes help in rich growth of phytoplankton during autumn and spring turn-over\u2019.<\/p>\n<p>13. Where do PGA and glycine gain entry respectively after being formed during photo-respiration in plants? What happens to them immediately after?<\/p>\n<p>14. What is meant by bioassay? Name the two bioassays that are used to examine auxin activity in plants.<\/p>\n<p>15. Explain <em>C<\/em><em>O<\/em>2CO2 compensation point.<\/p>\n<hr \/>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"SECTION_%E2%80%93_C\"><\/span><strong>SECTION &#8211; C<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>16. Define the following and give their values in a normal human adult:<\/p>\n<p>a) Tidal volume<\/p>\n<p>b) Expiratory reserve volume<\/p>\n<p>c) Aspiratory capacity.<\/p>\n<p>17. (i) How do grasslands differ from Savannas?<\/p>\n<p>(ii) Name the two major categories of plant forms that dominate the desert vegetation.<\/p>\n<p>18. Explain the Capillarity Theory in respect of ascent of water in plants. Name the tissue involved.<\/p>\n<p>19. Explain the initiation of muscle contraction. What is the role of Sarcoplasmic Reticulum, Myosin head and F-action during contraction in striated muscles?<\/p>\n<p>20. What is meant by ozone shield? Name two gases that can cause damage to this shield. Give one harmful effect of this damage each on plants and animals.<\/p>\n<p>21. Why is sub-culturing essential in plant tissue culture?<\/p>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"Or-2\"><\/span><strong>Or<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Explain the process of heterosis. How is it different from inbreeding depression?<\/p>\n<p>22. Where and how is urea produced in ureotelic animals? What happens to the kidney filtrate in descending loop of Henle and collecting tubules in humans?<\/p>\n<p>23. Distinguish between epimorphic and morphallactic regeneration, giving one example of each.<\/p>\n<p>24. Mention where the following are located in the human brain, and give one function of each:<br \/>\na) Temporal lobe<br \/>\nb) Cerebellum<br \/>\nc) Corpus callosum<\/p>\n<p>25. Define innate immunity. Name and explain the category of barrier which involves macrophages.<\/p>\n<hr \/>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"SECTION_%E2%80%93_D\"><\/span><strong>SECTION &#8211; D<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>26. What is the basis of classifying \u2018cancer? Name and explain the different Categories of cancer. Mention any two approaches for cancer treatment.<\/p>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"Or-3\"><\/span><strong>Or<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>What is embryo culture? What is the objective of this culture? Describe the three applications of this technique.<\/p>\n<p>27. Draw a diagram of the longitudinal section of a mature anatropous ovule and label any ten parts in it.<\/p>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"Or-4\"><\/span><strong>Or<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Draw a flow-chart to show the hormonal control of the human male reproductive system, highlighting the inhibitory and stimulatory directions in it.<\/p>\n<p><img decoding=\"async\" id=\"Picture 1\" style=\"height: 230px; width: 269px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/lyp\/12\/bio\/2005\/image001.png\" \/><\/p>\n<p>28. Explain the process of biosynthetic phase of photosynthesis occurring in the chloroplast.<\/p>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"Or-5\"><\/span><strong>Or<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Describe the process of development of root nodules in a leguminous plant. Name the oxygen scavenger molecule present in the root nodules.<\/p>\n<\/div>\n<\/div>\n<p><!-- The polyfills js is generated during the build process --><!-- The vendor js is generated during the build process It contains all of the dependencies in node_modules --><!-- The main bundle js is generated during the build process --><\/p>\n<div>\n<p style=\"text-align: center;\"><strong>These are questions only. To view and download complete question paper with solution install myCBSEguide App from google play store or login to our\u00a0<a href=\"https:\/\/mycbseguide.com\/dashboard\/\">student dashboard<\/a>.<\/strong><\/p>\n<p style=\"text-align: center;\"><b><strong><a class=\"button\" href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\">Download myCBSEguide App<\/a><\/strong><\/b><\/p>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Last_Year_Question_Paper_Class_12_Biology_2005\"><\/span>Last Year Question Paper Class 12 Biology 2005<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Download class 12 Biology question paper with solution from best CBSE App the myCBSEguide. CBSE class 12 Biology question paper 2005 in PDF format with solution will help you to understand the latest question paper pattern and marking scheme of the CBSE board examination. You will get to know the difficulty level of the question paper.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Previous_Year_Question_Paper_for_class_12_in_PDF\"><\/span>Previous Year Question Paper for class 12 in PDF<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>CBSE question papers 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005 and so on for all the subjects are available under this download link. Practicing real question paper certainly helps students to get confidence and improve performance in weak areas.<\/p>\n<ul>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-physics\/1251\/cbse-last-year-papers\/3\/\">Physics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-chemistry\/1267\/cbse-last-year-papers\/3\/\">Chemistry<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-mathematics\/1284\/cbse-last-year-papers\/3\/\">Mathematics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-biology\/1298\/cbse-last-year-papers\/3\/\">Biology<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-accountancy\/1315\/cbse-last-year-papers\/3\/\">Accountancy<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-business-studies\/1727\/cbse-last-year-papers\/3\/\">Business Studies<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-economics\/1327\/cbse-last-year-papers\/3\/\">Economics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-history\/1869\/cbse-last-year-papers\/3\/\">History<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-geography\/1863\/cbse-last-year-papers\/3\/\">Geography<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-political-science\/1879\/cbse-last-year-papers\/3\/\">Political Science<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-physical-education\/1877\/cbse-last-year-papers\/3\/\">Physical Education<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-computer-science\/1851\/cbse-last-year-papers\/3\/\">Computer Science<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-informatics-practices\/1873\/cbse-last-year-papers\/3\/\">Informatics Practices<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-english-core\/1855\/cbse-last-year-papers\/3\/\">English Core<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-hindi-core\/1865\/cbse-last-year-papers\/3\/\">Hindi Core<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-hindi-elective\/1867\/cbse-last-year-papers\/3\/\">Hindi Elective<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12\/1250\/\">Other Subjects<\/a><\/li>\n<\/ul>\n<p>To download CBSE Question Paper class 12 Biology, Chemistry, Physics, 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 solutions, NCERT Exemplar solutions, 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","protected":false},"excerpt":{"rendered":"<p>CBSE Question Paper 2005 class 12 Biology\u00a0conducted by Central Board of Secondary Education, New Delhi in the month of March 2005. CBSE previous year question papers with solution are available in myCBSEguide mobile app and cbse guide website. The Best CBSE App for students and teachers is myCBSEguide which provides complete study material and practice &#8230; <a title=\"CBSE Question Paper 2005 class 12 Biology\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2005-class-12-biology\/\" aria-label=\"More on CBSE Question Paper 2005 class 12 Biology\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1435,1346,1014],"tags":[276,1527,1342,80,1566,1569],"class_list":["post-22451","post","type-post","status-publish","format-standard","hentry","category-biology-cbse-class-12","category-cbse","category-cbse-question-papers","tag-biology","tag-cbse-question-paper","tag-class-12","tag-last-year-papers","tag-previous-question-paper","tag-ten-year-questions-paper"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - 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