{"id":5707,"date":"2026-02-09T07:13:25","date_gmt":"2026-02-09T07:13:25","guid":{"rendered":"https:\/\/www.chennaineet.com\/blog\/?p=5707"},"modified":"2026-02-09T07:58:13","modified_gmt":"2026-02-09T07:58:13","slug":"biological-classification-class-11-ncert","status":"publish","type":"post","link":"https:\/\/www.chennaineet.com\/blog\/biological-classification-class-11-ncert\/","title":{"rendered":"NCERT Book for Class 11 Biology \u2013 (Chapter 2 &#8211; Biological Classification)"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><strong>Chapter 2 &#8211; Biological Classification<\/strong><\/h2>\n\n\n\n<p>NCERT Book for Class 11 Biology \u2013 (Chapter 2 \u2013 Biological Classification) introduces students to the systematic method of categorizing the vast diversity of living organisms. This chapter explains the principles of classification, outlines five major kingdoms, and describes how organisms are grouped based on similarities and differences. It covers key concepts such as taxonomic hierarchy, binomial nomenclature, and major characteristics of each kingdom. Understanding this chapter is essential for building a strong foundation in biology and plays a significant role in both CBSE board exams and competitive exams like NEET. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Biological Classification Class 11 NCERT<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"764\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-1-764x1024.jpg\" alt=\"\" class=\"wp-image-5708\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-1-764x1024.jpg 764w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-1-224x300.jpg 224w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-1-768x1029.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-1-1146x1536.jpg 1146w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-1-440x590.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-1-680x911.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-1.jpg 1275w\" sizes=\"(max-width: 764px) 100vw, 764px\" \/><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"764\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-2-764x1024.jpg\" alt=\"\" class=\"wp-image-5709\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-2-764x1024.jpg 764w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-2-224x300.jpg 224w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-2-768x1029.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-2-1146x1536.jpg 1146w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-2-440x590.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-2-680x911.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-2.jpg 1275w\" sizes=\"(max-width: 764px) 100vw, 764px\" \/><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"764\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-3-764x1024.jpg\" alt=\"\" class=\"wp-image-5710\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-3-764x1024.jpg 764w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-3-224x300.jpg 224w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-3-768x1029.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-3-1146x1536.jpg 1146w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-3-440x590.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-3-680x911.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-3.jpg 1275w\" sizes=\"(max-width: 764px) 100vw, 764px\" \/><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"764\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-4-764x1024.jpg\" alt=\"\" class=\"wp-image-5711\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-4-764x1024.jpg 764w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-4-224x300.jpg 224w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-4-768x1029.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-4-1146x1536.jpg 1146w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-4-440x590.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-4-680x911.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-4.jpg 1275w\" sizes=\"(max-width: 764px) 100vw, 764px\" \/><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"764\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-5-764x1024.jpg\" alt=\"\" class=\"wp-image-5712\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-5-764x1024.jpg 764w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-5-224x300.jpg 224w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-5-768x1029.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-5-1146x1536.jpg 1146w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-5-440x590.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-5-680x911.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-5.jpg 1275w\" sizes=\"(max-width: 764px) 100vw, 764px\" \/><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"764\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-6-764x1024.jpg\" alt=\"\" class=\"wp-image-5713\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-6-764x1024.jpg 764w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-6-224x300.jpg 224w, 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srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-7-764x1024.jpg 764w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-7-224x300.jpg 224w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-7-768x1029.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-7-1146x1536.jpg 1146w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-7-440x590.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-7-680x911.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-7.jpg 1275w\" sizes=\"(max-width: 764px) 100vw, 764px\" \/><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"764\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-8-764x1024.jpg\" alt=\"\" class=\"wp-image-5715\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-8-764x1024.jpg 764w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-8-224x300.jpg 224w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-8-768x1029.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-8-1146x1536.jpg 1146w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-8-440x590.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-8-680x911.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-8.jpg 1275w\" sizes=\"(max-width: 764px) 100vw, 764px\" \/><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"764\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-9-764x1024.jpg\" alt=\"\" class=\"wp-image-5716\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-9-764x1024.jpg 764w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-9-224x300.jpg 224w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-9-768x1029.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-9-1146x1536.jpg 1146w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-9-440x590.jpg 440w, 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https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-11-224x300.jpg 224w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-11-768x1029.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-11-1146x1536.jpg 1146w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-11-440x590.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-11-680x911.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-11.jpg 1275w\" sizes=\"(max-width: 764px) 100vw, 764px\" \/><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"764\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-12-764x1024.jpg\" alt=\"\" class=\"wp-image-5719\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-12-764x1024.jpg 764w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-12-224x300.jpg 224w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-12-768x1029.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-12-1146x1536.jpg 1146w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-12-440x590.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-12-680x911.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-12.jpg 1275w\" sizes=\"(max-width: 764px) 100vw, 764px\" \/><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"764\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-13-764x1024.jpg\" alt=\"\" class=\"wp-image-5720\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-13-764x1024.jpg 764w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-13-224x300.jpg 224w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-13-768x1029.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-13-1146x1536.jpg 1146w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-13-440x590.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-13-680x911.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/Biological-Classification-13.jpg 1275w\" sizes=\"(max-width: 764px) 100vw, 764px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/www.chennaineet.com\/blog\/chapter-3-plant-kingdom-ncert-biology\/\">Chapter 3 &#8211; Plant Kingdom<\/a><\/strong><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Chapter 2 &#8211; Biological Classification NCERT Book for Class 11 Biology \u2013 (Chapter 2 \u2013 Biological Classification) introduces students to the systematic method of categorizing the vast diversity of living organisms. This chapter explains the principles of classification, outlines five major kingdoms, and describes how organisms are grouped based on similarities and differences. It covers [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":5721,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[134,135],"tags":[142,138,143,139,140,132,141,144],"class_list":["post-5707","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ncert-book","category-neet-biology","tag-biological-classification-class-11-ncert-pdf","tag-biological-classification-class-11-pdf","tag-biological-classification-notes","tag-class-11-biology-chapter-2-pdf-notes","tag-class-11th-biology-chapter-2-question-answer","tag-ncert-biology-class-11-pdf-chapter-wise","tag-ncert-class-11-biology-pdf-download-full-book-old-edition","tag-plant-kingdom-ncert-pdf"],"_links":{"self":[{"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/posts\/5707","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/comments?post=5707"}],"version-history":[{"count":3,"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/posts\/5707\/revisions"}],"predecessor-version":[{"id":5748,"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/posts\/5707\/revisions\/5748"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/media\/5721"}],"wp:attachment":[{"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/media?parent=5707"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/categories?post=5707"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/tags?post=5707"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}