{"id":753953,"date":"2025-01-22T14:52:25","date_gmt":"2025-01-22T09:22:25","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=753953"},"modified":"2025-07-31T17:34:57","modified_gmt":"2025-07-31T12:04:57","slug":"class-10-biology-worksheet-heredity-and-evolution","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/worksheets-class-10-biology\/heredity-and-evolution\/","title":{"rendered":"Class 10 Biology Worksheet Heredity and Evolution"},"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\/worksheets-class-10-biology\/heredity-and-evolution\/#What_is_Heredity\" title=\"What is Heredity?\">What is Heredity?<\/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\/worksheets-class-10-biology\/heredity-and-evolution\/#Laws_of_Inheritance\" title=\"Laws of Inheritance\">Laws of Inheritance<\/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\/worksheets-class-10-biology\/heredity-and-evolution\/#Mendels_Laws\" title=\"Mendel\u2019s Laws\">Mendel\u2019s Laws<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/infinitylearn.com\/surge\/worksheets-class-10-biology\/heredity-and-evolution\/#What_is_Evolution\" title=\"What is Evolution?\">What is Evolution?<\/a><\/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\/worksheets-class-10-biology\/heredity-and-evolution\/#Differences_Between_Heredity_and_Evolution\" title=\"Differences Between Heredity and Evolution\">Differences Between Heredity and Evolution<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/infinitylearn.com\/surge\/worksheets-class-10-biology\/heredity-and-evolution\/#Worksheet_for_Class_10_Heredity_and_Evolution\" title=\"Worksheet for Class 10 Heredity and Evolution\">Worksheet for Class 10 Heredity and Evolution<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/infinitylearn.com\/surge\/worksheets-class-10-biology\/heredity-and-evolution\/#Section_A_Fill_in_the_Blanks\" title=\"Section A: Fill in the Blanks\">Section A: Fill in the Blanks<\/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\/worksheets-class-10-biology\/heredity-and-evolution\/#Section_B_Match_the_Following\" title=\"Section B: Match the Following\">Section B: Match the Following<\/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\/worksheets-class-10-biology\/heredity-and-evolution\/#Section_C_Short_Answer_Questions\" title=\"Section C: Short Answer Questions\">Section C: Short Answer Questions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/infinitylearn.com\/surge\/worksheets-class-10-biology\/heredity-and-evolution\/#Section_D_Long_Answer_Questions\" title=\"Section D: Long Answer Questions\">Section D: Long Answer Questions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/infinitylearn.com\/surge\/worksheets-class-10-biology\/heredity-and-evolution\/#Section_E_True_or_False\" title=\"Section E: True or False\">Section E: True or False<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/infinitylearn.com\/surge\/worksheets-class-10-biology\/heredity-and-evolution\/#Section_F_Multiple_Choice_Questions\" title=\"Section F: Multiple Choice Questions\">Section F: Multiple Choice Questions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/infinitylearn.com\/surge\/worksheets-class-10-biology\/heredity-and-evolution\/#Section_G_Diagram-Based_Questions\" title=\"Section G: Diagram-Based Questions\">Section G: Diagram-Based Questions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/infinitylearn.com\/surge\/worksheets-class-10-biology\/heredity-and-evolution\/#Section_H_Assertion_and_Reasoning\" title=\"Section H: Assertion and Reasoning\">Section H: Assertion and Reasoning<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/infinitylearn.com\/surge\/worksheets-class-10-biology\/heredity-and-evolution\/#Section_I_Case-Based_Questions\" title=\"Section I: Case-Based Questions\">Section I: Case-Based Questions<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p data-pm-slice=\"1 1 []\">Biology is a fascinating subject that explains how life works, and in Class 10, one of the most interesting topics you study is &#8220;<strong><a href=\"https:\/\/infinitylearn.com\/surge\/biology\/heredity-and-evolution\/\">Heredity and Evolution<\/a><\/strong>.&#8221; This topic helps us understand how traits are passed from one generation to another and how living organisms have evolved over millions of years. Let us explore the key concepts in this chapter and create a helpful worksheet to reinforce your learning.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_Heredity\"><\/span>What is Heredity?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Heredity is the process through which parents pass traits to their offspring. For example, you might have inherited your eye color, hair type, or even certain habits from your parents. The study of heredity is called genetics.<\/p>\n<p><strong>Key Terms in Heredity:<\/strong><\/p>\n<ol>\n<li><strong>Gene<\/strong>: A unit of inheritance found in chromosomes. It carries information about a specific trait.<\/li>\n<li><a href=\"https:\/\/infinitylearn.com\/surge\/biology\/dna-genetic-material\/\"><strong>DNA (Deoxyribonucleic Acid)<\/strong><\/a>: The molecule that contains genetic information.<\/li>\n<li><strong>Chromosome<\/strong>: A thread-like structure in the nucleus that contains DNA.<\/li>\n<li><strong>Allele<\/strong>: Different forms of the same gene. For example, the gene for eye color might have alleles for brown, blue, or green eyes.<\/li>\n<\/ol>\n<p><strong>Example Question:<\/strong><\/p>\n<ol start=\"1\" data-spread=\"false\">\n<li>What is the role of DNA in heredity?<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Laws_of_Inheritance\"><\/span>Laws of Inheritance<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong><a href=\"https:\/\/infinitylearn.com\/surge\/topics\/gregor-mendel-father-of-genetics-and-modern-genetics\/\">Gregor Mendel<\/a><\/strong>, known as the &#8220;Father of Genetics,&#8221; discovered the basic principles of heredity. He conducted experiments with pea plants to explain how traits are inherited.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Mendels_Laws\"><\/span>Mendel\u2019s Laws<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol>\n<li><strong>Law of Dominance<\/strong>: Some traits (dominant) can mask others (recessive).<\/li>\n<li><strong>Law of Segregation<\/strong>: During reproduction, alleles separate, and each offspring gets one allele from each parent.<\/li>\n<li><strong>Law of Independent Assortment<\/strong>: Traits are inherited independently of each other.<\/li>\n<\/ol>\n<p><strong>Example Question:<\/strong> 2. Define Mendel\u2019s Law of Segregation and explain it with an example.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_Evolution\"><\/span>What is Evolution?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Evolution is the process through which species change over time. It explains the diversity of life on Earth. Charles Darwin\u2019s theory of natural selection is the most widely accepted explanation of evolution.<\/p>\n<p><strong>Key Concepts in Evolution:<\/strong><\/p>\n<ol>\n<li><strong>Natural Selection<\/strong>: Organisms that are better adapted to their environment survive and reproduce.<\/li>\n<li><strong>Speciation<\/strong>: The formation of new species due to evolution.<\/li>\n<li><strong>Fossils<\/strong>: Remains or impressions of ancient organisms that help us study evolution.<\/li>\n<li><strong>Homologous and Analogous Organs<\/strong>:<\/li>\n<\/ol>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul data-spread=\"false\">\n<li>Homologous organs have a similar structure but different functions (e.g., human arm and bat wing).<\/li>\n<li>Analogous organs have different structures but similar functions (e.g., wings of a bird and wings of an insect).<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>Example Question:<\/strong> 3. What is natural selection? Give an example.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Differences_Between_Heredity_and_Evolution\"><\/span>Differences Between Heredity and Evolution<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"table-responsive\">\n<table class=\"table table-bordered table-striped\" style=\"width: 74.0508%; height: 115px;\" cellspacing=\"0\" cellpadding=\"5\">\n<tbody>\n<tr style=\"background-color: #89cff0; color: black;\">\n<td style=\"text-align: center;\"><strong>Heredity<\/strong><\/td>\n<td style=\"text-align: center;\"><strong>Evolution<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Focuses on how traits are passed from parents to offspring.<\/td>\n<td>Focuses on changes in species over time.<\/td>\n<\/tr>\n<tr>\n<td>Involves genes and alleles.<\/td>\n<td>Involves natural selection, mutations, and adaptations.<\/td>\n<\/tr>\n<tr>\n<td>Happens within one or a few generations.<\/td>\n<td>Takes millions of years.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><strong>Example Question:<\/strong> 4. List two differences between heredity and evolution.<\/p>\n<h2 data-pm-slice=\"1 3 []\"><span class=\"ez-toc-section\" id=\"Worksheet_for_Class_10_Heredity_and_Evolution\"><\/span>Worksheet for Class 10 Heredity and Evolution<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Use this worksheet to test your understanding of the chapter.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Section_A_Fill_in_the_Blanks\"><\/span>Section A: Fill in the Blanks<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol start=\"1\" data-spread=\"false\">\n<li>The basic unit of inheritance is the _______.<\/li>\n<li>Traits that mask other traits are called _______ traits.<\/li>\n<li>_______ is the molecule that carries genetic information.<\/li>\n<li>The theory of evolution by natural selection was proposed by _______.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Section_B_Match_the_Following\"><\/span>Section B: Match the Following<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"table-responsive\">\n<table class=\"table table-bordered table-striped\" style=\"width: 74.0508%; height: 115px;\" cellspacing=\"0\" cellpadding=\"5\">\n<tbody>\n<tr style=\"background-color: #89cff0; color: black;\">\n<td style=\"text-align: center;\"><strong>Column A<\/strong><\/td>\n<td style=\"text-align: center;\"><strong>Column B<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Gregor Mendel<\/td>\n<td>Evolution<\/td>\n<\/tr>\n<tr>\n<td>Charles Darwin<\/td>\n<td>Genetics<\/td>\n<\/tr>\n<tr>\n<td>DNA<\/td>\n<td>Homologous organs<\/td>\n<\/tr>\n<tr>\n<td>Bat wing and human arm<\/td>\n<td>Heredity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"Section_C_Short_Answer_Questions\"><\/span>Section C: Short Answer Questions<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol start=\"1\" data-spread=\"false\">\n<li>What are homologous and analogous organs? Give examples of each.<\/li>\n<li>Explain speciation with an example.<\/li>\n<li>Why are fossils important in understanding evolution?<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Section_D_Long_Answer_Questions\"><\/span>Section D: Long Answer Questions<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol start=\"1\" data-spread=\"false\">\n<li>Describe Mendel\u2019s experiments with pea plants. What conclusions did he draw?<\/li>\n<li>Explain how natural selection leads to the evolution of species. Use an example to support your answer.<\/li>\n<li>Discuss the importance of genetic variation in evolution.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Section_E_True_or_False\"><\/span>Section E: True or False<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol>\n<li>Natural selection is the process by which organisms best adapted to their environment survive and reproduce.<\/li>\n<li>All traits inherited from parents are dominant.<\/li>\n<li>Fossils provide evidence for the evolution of species.<\/li>\n<li>Analogous organs have similar structures but different functions.<\/li>\n<li>The study of genetics began with Charles Darwin&#8217;s experiments.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Section_F_Multiple_Choice_Questions\"><\/span>Section F: Multiple Choice Questions<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol>\n<li><strong>Which of the following is a dominant trait in pea plants as per Mendel\u2019s experiments?<\/strong><br \/>\na) Green seed color<br \/>\nb) Wrinkled seeds<br \/>\nc) Tall stem<br \/>\nd) White flower<\/li>\n<li><strong>What are the thread-like structures in the nucleus called?<\/strong><br \/>\na) Genes<br \/>\nb) Chromosomes<br \/>\nc) Alleles<br \/>\nd) DNA<\/li>\n<li><strong>Which concept explains the development of a new species?<\/strong><br \/>\na) Mutation<br \/>\nb) Speciation<br \/>\nc) Natural selection<br \/>\nd) Fossilization<\/li>\n<li><strong>Homologous organs indicate:<\/strong><br \/>\na) Common ancestry<br \/>\nb) Independent evolution<br \/>\nc) Similar functions<br \/>\nd) None of the above<\/li>\n<li><strong>The study of heredity is called:<\/strong><br \/>\na) Evolution<br \/>\nb) Fossilology<br \/>\nc) Genetics<br \/>\nd) Anthropology<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Section_G_Diagram-Based_Questions\"><\/span>Section G: Diagram-Based Questions<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol>\n<li>Draw a Punnett square to show the inheritance of traits in a monohybrid cross between a tall pea plant (TT) and a short pea plant (tt). Mention the genotype and phenotype ratios.<\/li>\n<li>Label the following parts on a diagram of the DNA structure: Phosphate group, Sugar, Base pair.<\/li>\n<li>Observe a provided image of homologous organs (e.g., human arm and bat wing). Write a short note explaining their structure and function.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Section_H_Assertion_and_Reasoning\"><\/span>Section H: Assertion and Reasoning<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol>\n<li><strong>Assertion (A):<\/strong> Fossils are important evidence of evolution.<br \/>\n<strong>Reason (R):<\/strong> Fossils show transitional forms between species.<\/p>\n<ul>\n<li>Options:<br \/>\na) Both A and R are true, and R is the correct explanation of A.<br \/>\nb) Both A and R are true, but R is not the correct explanation of A.<br \/>\nc) A is true, but R is false.<br \/>\nd) A is false, but R is true.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Assertion (A):<\/strong> Mendel\\u2019s laws apply to all living organisms.<br \/>\n<strong>Reason (R):<\/strong> Mendel\\u2019s experiments were conducted on pea plants.<\/p>\n<ul>\n<li>Options:<br \/>\na) Both A and R are true, and R is the correct explanation of A.<br \/>\nb) Both A and R are true, but R is not the correct explanation of A.<br \/>\nc) A is true, but R is false.<br \/>\nd) A is false, but R is true.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Section_I_Case-Based_Questions\"><\/span>Section I: Case-Based Questions<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol>\n<li>A population of moths changes color from light to dark due to industrial pollution.<br \/>\n<strong>Questions:<\/strong><br \/>\na) Which concept of evolution does this represent?<br \/>\nb) How does natural selection play a role in this example?<\/li>\n<li>A farmer notices that crossing red-flowered plants with white-flowered plants always results in pink-flowered offspring.<br \/>\n<strong>Questions:<\/strong><br \/>\na) What type of inheritance is this?<br \/>\nb) Explain how this differs from Mendelian inheritance.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Biology is a fascinating subject that explains how life works, and in Class 10, one of the most interesting topics [&hellip;]<\/p>\n","protected":false},"author":53,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"Class 10 Biology Worksheet Heredity and Evolution","_yoast_wpseo_title":"Class 10 Biology Worksheet: Heredity and Evolution - Practice Now | IL","_yoast_wpseo_metadesc":"Download a comprehensive Class 10 Biology worksheet on Heredity and Evolution. Strengthen your concepts with engaging questions and activities. Start learning today!","custom_permalink":"worksheets-class-10-biology\/heredity-and-evolution\/"},"categories":[11033],"tags":[],"table_tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Class 10 Biology Worksheet: Heredity and Evolution - Practice Now | IL<\/title>\n<meta name=\"description\" content=\"Download a comprehensive Class 10 Biology worksheet on Heredity and Evolution. Strengthen your concepts with engaging questions and activities. 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