{"id":51274,"date":"2022-01-18T10:30:42","date_gmt":"2022-01-18T05:00:42","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=51274"},"modified":"2025-07-31T17:42:31","modified_gmt":"2025-07-31T12:12:31","slug":"ncert-solutions-for-class-12-biology-chapter-2-sexual-reproduction-in-flowering-plants-2-4-post-fertilisation-structures-and-events","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/study-materials\/ncert-solutions\/class-12\/biology\/chapter-2-sexual-reproduction-in-flowering-plants-2-4-post-fertilisation-structures-and-events\/","title":{"rendered":"NCERT Solutions For Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants 2.4 Post Fertilization Structures And Events"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_37 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\">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\" style=\"display: none;\"><label for=\"item\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;\"><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><\/label><input type=\"checkbox\" id=\"item\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' style='display:block'><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/ncert-solutions\/class-12\/biology\/chapter-2-sexual-reproduction-in-flowering-plants-2-4-post-fertilisation-structures-and-events\/#Overview_of_Topic\" title=\"Overview of Topic\">Overview of Topic<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/ncert-solutions\/class-12\/biology\/chapter-2-sexual-reproduction-in-flowering-plants-2-4-post-fertilisation-structures-and-events\/#Importance_of_NCERT_Solutions\" title=\"Importance of NCERT Solutions\">Importance of NCERT Solutions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/ncert-solutions\/class-12\/biology\/chapter-2-sexual-reproduction-in-flowering-plants-2-4-post-fertilisation-structures-and-events\/#Quality_of_SolutionsPrepared_by_Expert_Teachers\" title=\"Quality of Solutions\/Prepared by Expert Teachers\">Quality of Solutions\/Prepared by Expert Teachers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/ncert-solutions\/class-12\/biology\/chapter-2-sexual-reproduction-in-flowering-plants-2-4-post-fertilisation-structures-and-events\/#Helps_in_Scoring_high_Marks\" title=\"Helps in Scoring high Marks\">Helps in Scoring high Marks<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/ncert-solutions\/class-12\/biology\/chapter-2-sexual-reproduction-in-flowering-plants-2-4-post-fertilisation-structures-and-events\/#FAQs_on_NCERT_Solutions_For_Class_12_Biology_Chapter_2_Sexual_Reproduction_In_Flowering_Plants_24_Post_Fertilization_Structures_And_Events\" title=\"FAQs on NCERT Solutions For Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants 2.4 Post Fertilization Structures And Events\">FAQs on NCERT Solutions For Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants 2.4 Post Fertilization Structures And Events<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/ncert-solutions\/class-12\/biology\/chapter-2-sexual-reproduction-in-flowering-plants-2-4-post-fertilisation-structures-and-events\/#What_is_pre_fertilization_and_post-fertilization\" title=\"What is pre fertilization and post-fertilization?\">What is pre fertilization and post-fertilization?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/ncert-solutions\/class-12\/biology\/chapter-2-sexual-reproduction-in-flowering-plants-2-4-post-fertilisation-structures-and-events\/#What_is_the_sequence_of_post-fertilization\" title=\"What is the sequence of post-fertilization?\">What is the sequence of post-fertilization?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/ncert-solutions\/class-12\/biology\/chapter-2-sexual-reproduction-in-flowering-plants-2-4-post-fertilisation-structures-and-events\/#What_are_the_4_steps_of_fertilization\" title=\"What are the 4 steps of fertilization?\">What are the 4 steps of fertilization?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/ncert-solutions\/class-12\/biology\/chapter-2-sexual-reproduction-in-flowering-plants-2-4-post-fertilisation-structures-and-events\/#How_many_types_of_pre_fertilization_are_there\" title=\"How many types of pre fertilization are there?\">How many types of pre fertilization are there?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p>NCERT Solutions for Class 12 Biology Chapter 2 Topic- Post-fertilization: Structures and Events and all chapter Topics produced by qualified teachers according to NCERT (CBSE) book rules are available as a free PDF download. Class 12 Biology Chapter 2 Topic- Post-fertilization: Structures and Events Questions with Solutions to assist you in revising the entire syllabus and achieving higher grades. Register to receive all exercise solutions through email.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Overview_of_Topic\"><\/span>Overview of Topic<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In plants, fertilization occurs when the male and female gametes merge to form a new cell called a <strong>zygote<\/a><\/strong>, leading to seed formation. After fertilization, a sequence of events happens to turn this zygote into a seed. Let&#8217;s understand what happens after <strong>fertilization<\/strong>, focusing on endosperm and embryo formation.<\/p>\n<p>What Happens After Fertilization? After fertilization, a series of changes occur to form a seed from an ovule and a fruit from an ovary.<\/p>\n<p>Here&#8217;s what occurs after fertilization:<\/p>\n<ol>\n<li><strong>Endosperm Development:<\/strong> Endosperm is a tissue found in seeds of flowering plants during seed development. It stores nutrients for the growing embryo, typically in the form of starch. Endosperm development can be classified into three types:<\/li>\n<\/ol>\n<p>a. Nuclear endosperm formation: The primary nucleus divides repeatedly, forming free nuclei without cell walls.<\/p>\n<p>b. Cellular endosperm formation: Cell walls form around the nuclei, creating cellular endosperm. This type is seen in coconut.<\/p>\n<p>c. Helobial endosperm formation: An intermediate type between cellular and nuclear endosperm formation.<\/p>\n<ol start=\"2\">\n<li><strong>Embryo Development:<\/strong> Embryo development, or embryogeny, is the growth and formation of the embryo from the zygote in flowering plants. The stages of embryo development are similar in both monocot and dicot plants.\n<ul>\n<li>Dicot embryos have an embryonal axis and two cotyledons. The embryonal axis consists of:\n<ul>\n<li>Epicotyl: Above the cotyledon level.<\/li>\n<li>Hypocotyl: Below the cotyledon level.<\/li>\n<\/ul>\n<\/li>\n<li>Monocot embryos have one cotyledon, also called a scutellum in the grass family. The epicotyl contains the shoot apex and coleoptiles.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>During seed maturation, the developing embryo may either use up the endosperm entirely or reserve it for seed <strong>germination<\/a><\/strong>.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Importance_of_NCERT_Solutions\"><\/span>Importance of NCERT Solutions<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The National Council for Educational Research and Training (NCERT) is a body charged with establishing norms and standards aimed at making education more accessible to all students across the country. Infinity learns to customize and release its content based on these concepts, which you as a student can benefit from. Math is a subject that can only be mastered by consistent practice. Infinity learns the main goal is to assist students to understand the factors that influence their ability to answer arithmetic problems efficiently for Class 12 Chapter 2 Biology. As a result, the solutions will assist you in better comprehending the chapter on Functions. As a result, you will gain confidence and, as a result, your grades will increase in the long run.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Quality_of_SolutionsPrepared_by_Expert_Teachers\"><\/span>Quality of Solutions\/Prepared by Expert Teachers<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>All of the solutions in Infinity Learn chapter 2 <strong><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/ncert-solutions\/class-12\/biology\/\" target=\"_blank\" rel=\"noopener\">Class 12 Biology<\/a><\/span><\/strong> are 100 percent genuine since different approaches to answering a problem have been indicated. Our organization exclusively hires teachers who are both highly experienced and possess the necessary mathematics skills. Similarly, all of the solutions supplied are correct because they were developed under the supervision of experts.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Helps_in_Scoring_high_Marks\"><\/span>Helps in Scoring high Marks<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If a student&#8217;s core understanding is solid, all of the related difficulties can be solved by using the fundamental notion. The <strong><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/ncert-solutions\/\" target=\"_blank\" rel=\"noopener\">NCERT solutions<\/a> <\/span><\/strong>in the Class 12 Biology chapter 2 have been designed to cover all of the principles of functions. We make certain that you comprehend how each mathematical step is applied. Each problem has been meticulously examined in depth. As a result, make use of the Infinity learns online curriculum to improve your grades in the long run.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQs_on_NCERT_Solutions_For_Class_12_Biology_Chapter_2_Sexual_Reproduction_In_Flowering_Plants_24_Post_Fertilization_Structures_And_Events\"><\/span>FAQs on NCERT Solutions For Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants 2.4 Post Fertilization Structures And Events<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_is_pre_fertilization_and_post-fertilization\"><\/span>What is pre fertilization and post-fertilization?<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tPre fertilisation, fertilisation, and post fertilisation are the three steps of the development of successive zygote events and embryogenesis, respectively. All pre fertilisation sexual events, including gametogenesis and gamete transfer, are included in the term 'pre fertilisation events'.\t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_is_the_sequence_of_post-fertilization\"><\/span>What is the sequence of post-fertilization?<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tAfter conception, a fertilized egg travels through your fallopian tubes to your uterus. The fertilized egg (called an embryo) implants (attaches) into the wall of your uterus. This triggers the placenta to form. Your placenta begins producing and releasing human chorionic gonadotropin (hCG) into your blood and pee.\t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_are_the_4_steps_of_fertilization\"><\/span>What are the 4 steps of fertilization?<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tThe stages of fertilization can be divided into four processes: 1) sperm preparation, 2) sperm-egg recognition and binding, 3) sperm-egg fusion and 4) fusion of sperm and egg pronuclei and activation of the zygote.\t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"How_many_types_of_pre_fertilization_are_there\"><\/span>How many types of pre fertilization are there?<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tGametogenesis: It is the process of formation of gametes. In plants, the formation of male gametes is called Microsporogenesis and the formation of female gametes is called Megasporogenesis. Gamete transfer: The transfer of male gametes to female gametes is called gamete transfer.\t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\n<script type=\"application\/ld+json\">\n\t{\n\t\t\"@context\": \"https:\/\/schema.org\",\n\t\t\"@type\": \"FAQPage\",\n\t\t\"mainEntity\": [\n\t\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What is pre fertilization and post-fertilization?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Pre fertilisation, fertilisation, and post fertilisation are the three steps of the development of successive zygote events and embryogenesis, respectively. All pre fertilisation sexual events, including gametogenesis and gamete transfer, are included in the term 'pre fertilisation events'.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What is the sequence of post-fertilization?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"After conception, a fertilized egg travels through your fallopian tubes to your uterus. The fertilized egg (called an embryo) implants (attaches) into the wall of your uterus. This triggers the placenta to form. Your placenta begins producing and releasing human chorionic gonadotropin (hCG) into your blood and pee.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What are the 4 steps of fertilization?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"The stages of fertilization can be divided into four processes: 1) sperm preparation, 2) sperm-egg recognition and binding, 3) sperm-egg fusion and 4) fusion of sperm and egg pronuclei and activation of the zygote.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"How many types of pre fertilization are there?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Gametogenesis: It is the process of formation of gametes. In plants, the formation of male gametes is called Microsporogenesis and the formation of female gametes is called Megasporogenesis. Gamete transfer: The transfer of male gametes to female gametes is called gamete transfer.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t\t\t\t]\n\t}\n<\/script>\n\n","protected":false},"excerpt":{"rendered":"<p>NCERT Solutions for Class 12 Biology Chapter 2 Topic- Post-fertilization: Structures and Events and all chapter Topics produced by qualified [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"NCERT Solutions for class 12 Biology","_yoast_wpseo_title":"NCERT Solutions Class 12 Biology Ch 2 Ex 2.4 Post Fertilization Structures And Events","_yoast_wpseo_metadesc":"Explore NCERT Solutions for Class 12 Biology Chapter 2: Sexual Reproduction In Flowering Plants covering post-fertilization structures and events in 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