{"id":25624960,"date":"2025-09-22T12:12:04","date_gmt":"2025-09-22T06:42:04","guid":{"rendered":"https:\/\/entri.app\/blog\/?p=25624960"},"modified":"2025-09-22T16:43:27","modified_gmt":"2025-09-22T11:13:27","slug":"kerala-psc-life-science-study-notes","status":"publish","type":"post","link":"https:\/\/entri.app\/blog\/kerala-psc-life-science-study-notes\/","title":{"rendered":"Kerala PSC Life Science Study Notes 2025 &#8211; Free PDF, MCQs &#038; Quiz"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69e04f3eb433e\" class=\"ez-toc-cssicon-toggle-label\"><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><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69e04f3eb433e\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/entri.app\/blog\/kerala-psc-life-science-study-notes\/#Kerala_PSC_Exam_2025_Highlights\" >Kerala PSC Exam 2025 Highlights<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/entri.app\/blog\/kerala-psc-life-science-study-notes\/#Life_Science_Study_Notes_2025_for_Kerala_PSC_Exams\" >Life Science Study Notes 2025 for Kerala PSC Exams<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/entri.app\/blog\/kerala-psc-life-science-study-notes\/#Life_Science_Quiz_2025_for_Kerala_PSC_Exams\" >Life Science Quiz 2025 for Kerala PSC Exams<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/entri.app\/blog\/kerala-psc-life-science-study-notes\/#Life_Science_MCQs_2025_for_Kerala_PSC_Exams\" >Life Science MCQs 2025 for Kerala PSC Exams<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/entri.app\/blog\/kerala-psc-life-science-study-notes\/#How_to_Prepare_for_Life_Science_with_Study_Notes_PDF\" >How to Prepare for Life Science with Study Notes PDF<\/a><\/li><\/ul><\/nav><\/div>\n<p>Life Science is a key subject in Kerala PSC exams and questions from this area appear at all levels, from 10th to Degree-based exams. To help aspirants, we\u2019ve prepared expert-made Life Science notes in PDF format, available for free in this blog. These notes cover important topics, make concepts easy to understand, and are perfect for quick revision and exam preparation. Explore now!<\/p>\n<p style=\"text-align: center;\"><a class=\"btn btn-default\" href=\"https:\/\/entri.app\/exam\/kerala-psc-coaching\/?utm_source=kerala-psc&amp;utm_medium=blog_referral&amp;utm_campaign=kerala-psc-notification\" target=\"_blank\" rel=\"noopener\">Start 7 day KERALA PSC course trail!<\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Kerala_PSC_Exam_2025_Highlights\"><\/span><strong>Kerala PSC Exam 2025 Highlights<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<table>\n<thead>\n<tr>\n<th><strong>Category<\/strong><\/th>\n<th><strong>Details<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Exam Authority<\/strong><\/td>\n<td>Kerala Public Service Commission (KPSC)<\/td>\n<\/tr>\n<tr>\n<td><strong>Levels of Exam<\/strong><\/td>\n<td>10th Level, 12th Level, Degree\/Graduate Level<\/td>\n<\/tr>\n<tr>\n<td><strong>Eligibility<\/strong><\/td>\n<td>Depends on post \u2013 SSLC\/Plus Two\/Degree or equivalent qualification; Age limit varies by category with relaxations<\/td>\n<\/tr>\n<tr>\n<td><strong>Vacancies<\/strong><\/td>\n<td>Announced in official notifications; varies across departments and posts<\/td>\n<\/tr>\n<tr>\n<td><strong>Selection Process<\/strong><\/td>\n<td>Written Test (OMR\/Online), Practical Test (if applicable), Physical Efficiency Test (for certain posts), Interview<\/td>\n<\/tr>\n<tr>\n<td><strong>Salary<\/strong><\/td>\n<td>As per notification<\/td>\n<\/tr>\n<tr>\n<td><strong>Official Website<\/strong><\/td>\n<td><a href=\"https:\/\/www.keralapsc.gov.in\/\">www.keralapsc.gov.in<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"Life_Science_Study_Notes_2025_for_Kerala_PSC_Exams\"><\/span><strong>Life Science Study Notes 2025 for Kerala PSC Exams<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Explore our free Life Science notes for Kerala PSC exams, covering biology, ecology, human body, and plant science in a simple way. These notes are easy to read, well-organized, and perfect for all levels of PSC exams. Use them to strengthen your basics, revise quickly, and gain confidence before the test.<\/p>\n<div class=\"lead-gen-block\"><a href=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2025\/09\/Secretariat-asst-Eng-Mal.pdf\" data-url=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2025\/09\/Secretariat-asst-Eng-Mal.pdf\" class=\"lead-pdf-download\" data-id=\"25556384\">\n<p style=\"text-align: center;\"><button class=\"btn btn-default\">\u00a0LIfe Science notes PDF<\/button><\/p>\n<\/a><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Life_Science_Quiz_2025_for_Kerala_PSC_Exams\"><\/span><strong>Life Science Quiz 2025 for Kerala PSC Exams<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"146\" data-end=\"205\"><strong data-start=\"146\" data-end=\"184\">1. What is the basic unit of life?<\/strong><br data-start=\"184\" data-end=\"187\" \/><strong data-start=\"187\" data-end=\"198\">Answer:<\/strong> Cell<\/p>\n<p data-start=\"207\" data-end=\"286\"><strong data-start=\"207\" data-end=\"261\">2. Which organ in the human body produces insulin?<\/strong><br data-start=\"261\" data-end=\"264\" \/><strong data-start=\"264\" data-end=\"275\">Answer:<\/strong> Pancreas<\/p>\n<p data-start=\"288\" data-end=\"413\"><strong data-start=\"288\" data-end=\"359\">3. Photosynthesis primarily takes place in which part of the plant?<\/strong><br data-start=\"359\" data-end=\"362\" \/><strong data-start=\"362\" data-end=\"373\">Answer:<\/strong> Leaves (specifically in chloroplasts)<\/p>\n<p data-start=\"415\" data-end=\"508\"><strong data-start=\"415\" data-end=\"459\">4. Hemoglobin is mainly responsible for:<\/strong><br data-start=\"459\" data-end=\"462\" \/><strong data-start=\"462\" data-end=\"473\">Answer:<\/strong> Transporting oxygen in the blood<\/p>\n<p data-start=\"510\" data-end=\"605\"><strong data-start=\"510\" data-end=\"579\">5. Which vitamin is produced in the skin on exposure to sunlight?<\/strong><br data-start=\"579\" data-end=\"582\" \/><strong data-start=\"582\" data-end=\"593\">Answer:<\/strong> Vitamin D<\/p>\n<p data-start=\"607\" data-end=\"681\"><strong data-start=\"607\" data-end=\"661\">6. What is the genetic material in most organisms?<\/strong><br data-start=\"661\" data-end=\"664\" \/><strong data-start=\"664\" data-end=\"675\">Answer:<\/strong> DNA<\/p>\n<p data-start=\"683\" data-end=\"791\"><strong data-start=\"683\" data-end=\"761\">7. The process of water movement from roots to leaves in plants is called:<\/strong><br data-start=\"761\" data-end=\"764\" \/><strong data-start=\"764\" data-end=\"775\">Answer:<\/strong> Transpiration<\/p>\n<p data-start=\"793\" data-end=\"893\"><strong data-start=\"793\" data-end=\"846\">8. Which blood cells help in fighting infections?<\/strong><br data-start=\"846\" data-end=\"849\" \/><strong data-start=\"849\" data-end=\"860\">Answer:<\/strong> White blood cells (Leukocytes)<\/p>\n<p data-start=\"895\" data-end=\"1006\"><strong data-start=\"895\" data-end=\"982\">9. The study of the relationship between organisms and their environment is called:<\/strong><br data-start=\"982\" data-end=\"985\" \/><strong data-start=\"985\" data-end=\"996\">Answer:<\/strong> Ecology<\/p>\n<p data-start=\"1008\" data-end=\"1107\"><strong data-start=\"1008\" data-end=\"1080\">10. Which part of the human brain controls balance and coordination?<\/strong><br data-start=\"1080\" data-end=\"1083\" \/><strong data-start=\"1083\" data-end=\"1094\">Answer:<\/strong> Cerebellum<\/p>\n<p data-start=\"84\" data-end=\"173\"><strong data-start=\"84\" data-end=\"147\">11. Which hormone regulates the sleep-wake cycle in humans?<\/strong><br data-start=\"147\" data-end=\"150\" \/><strong data-start=\"150\" data-end=\"161\">Answer:<\/strong> Melatonin<\/p>\n<p data-start=\"175\" data-end=\"301\"><strong data-start=\"175\" data-end=\"232\">12. What is the main function of the xylem in plants?<\/strong><br data-start=\"232\" data-end=\"235\" \/><strong data-start=\"235\" data-end=\"246\">Answer:<\/strong> Transport of water and minerals from roots to leaves<\/p>\n<p data-start=\"303\" data-end=\"397\"><strong data-start=\"303\" data-end=\"368\">13. Which organelle is known as the \u201cpowerhouse of the cell\u201d?<\/strong><br data-start=\"368\" data-end=\"371\" \/><strong data-start=\"371\" data-end=\"382\">Answer:<\/strong> Mitochondria<\/p>\n<p data-start=\"399\" data-end=\"492\"><strong data-start=\"399\" data-end=\"457\">14. What type of blood circulation is found in humans?<\/strong><br data-start=\"457\" data-end=\"460\" \/><strong data-start=\"460\" data-end=\"471\">Answer:<\/strong> Double circulation<\/p>\n<p data-start=\"494\" data-end=\"604\"><strong data-start=\"494\" data-end=\"577\">15. The process by which plants release oxygen during photosynthesis is called:<\/strong><br data-start=\"577\" data-end=\"580\" \/><strong data-start=\"580\" data-end=\"591\">Answer:<\/strong> Photolysis<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Life_Science_MCQs_2025_for_Kerala_PSC_Exams\"><\/span><strong>Life Science MCQs 2025 for Kerala PSC Exams<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"171\" data-end=\"313\"><strong data-start=\"171\" data-end=\"224\">1. Which vitamin is essential for blood clotting?<\/strong><br data-start=\"224\" data-end=\"227\" \/>A) Vitamin A<br data-start=\"239\" data-end=\"242\" \/>B) Vitamin D<br data-start=\"254\" data-end=\"257\" \/>C) Vitamin K<br data-start=\"269\" data-end=\"272\" \/>D) Vitamin C<br data-start=\"284\" data-end=\"287\" \/><strong data-start=\"287\" data-end=\"298\">Answer:<\/strong> C) Vitamin K<\/p>\n<p data-start=\"315\" data-end=\"498\"><strong data-start=\"315\" data-end=\"374\">2. What is the primary function of ribosomes in a cell?<\/strong><br data-start=\"374\" data-end=\"377\" \/>A) Energy production<br data-start=\"397\" data-end=\"400\" \/>B) Protein synthesis<br data-start=\"420\" data-end=\"423\" \/>C) Photosynthesis<br data-start=\"440\" data-end=\"443\" \/>D) DNA replication<br data-start=\"461\" data-end=\"464\" \/><strong data-start=\"464\" data-end=\"475\">Answer:<\/strong> B) Protein synthesis<\/p>\n<p data-start=\"500\" data-end=\"637\"><strong data-start=\"500\" data-end=\"562\">3. Which organ filters blood and produces urine in humans?<\/strong><br data-start=\"562\" data-end=\"565\" \/>A) Liver<br data-start=\"573\" data-end=\"576\" \/>B) Kidney<br data-start=\"585\" data-end=\"588\" \/>C) Pancreas<br data-start=\"599\" data-end=\"602\" \/>D) Spleen<br data-start=\"611\" data-end=\"614\" \/><strong data-start=\"614\" data-end=\"625\">Answer:<\/strong> B) Kidney<\/p>\n<p data-start=\"639\" data-end=\"777\"><strong data-start=\"639\" data-end=\"685\">4. Which pigment gives red color to blood?<\/strong><br data-start=\"685\" data-end=\"688\" \/>A) Myoglobin<br data-start=\"700\" data-end=\"703\" \/>B) Chlorophyll<br data-start=\"717\" data-end=\"720\" \/>C) Hemoglobin<br data-start=\"733\" data-end=\"736\" \/>D) Carotene<br data-start=\"747\" data-end=\"750\" \/><strong data-start=\"750\" data-end=\"761\">Answer:<\/strong> C) Hemoglobin<\/p>\n<p data-start=\"779\" data-end=\"953\"><strong data-start=\"779\" data-end=\"845\">5. Which part of the brain regulates heart rate and breathing?<\/strong><br data-start=\"845\" data-end=\"848\" \/>A) Cerebellum<br data-start=\"861\" data-end=\"864\" \/>B) Medulla oblongata<br data-start=\"884\" data-end=\"887\" \/>C) Hypothalamus<br data-start=\"902\" data-end=\"905\" \/>D) Cerebrum<br data-start=\"916\" data-end=\"919\" \/><strong data-start=\"919\" data-end=\"930\">Answer:<\/strong> B) Medulla oblongata<\/p>\n<p data-start=\"955\" data-end=\"1096\"><strong data-start=\"955\" data-end=\"1012\">6. In plants, which hormone promotes stem elongation?<\/strong><br data-start=\"1012\" data-end=\"1015\" \/>A) Auxin<br data-start=\"1023\" data-end=\"1026\" \/>B) Cytokinin<br data-start=\"1038\" data-end=\"1041\" \/>C) Ethylene<br data-start=\"1052\" data-end=\"1055\" \/>D) Abscisic acid<br data-start=\"1071\" data-end=\"1074\" \/><strong data-start=\"1074\" data-end=\"1085\">Answer:<\/strong> A) Auxin<\/p>\n<p data-start=\"1098\" data-end=\"1306\"><strong data-start=\"1098\" data-end=\"1173\">7. Which type of reproduction produces genetically identical offspring?<\/strong><br data-start=\"1173\" data-end=\"1176\" \/>A) Sexual reproduction<br data-start=\"1198\" data-end=\"1201\" \/>B) Asexual reproduction<br data-start=\"1224\" data-end=\"1227\" \/>C) Cross-pollination<br data-start=\"1247\" data-end=\"1250\" \/>D) Fertilization<br data-start=\"1266\" data-end=\"1269\" \/><strong data-start=\"1269\" data-end=\"1280\">Answer:<\/strong> B) Asexual reproduction<\/p>\n<p data-start=\"1308\" data-end=\"1429\"><strong data-start=\"1308\" data-end=\"1344\">8. The study of fungi is called:<\/strong><br data-start=\"1344\" data-end=\"1347\" \/>A) Botany<br data-start=\"1356\" data-end=\"1359\" \/>B) Mycology<br data-start=\"1370\" data-end=\"1373\" \/>C) Zoology<br data-start=\"1383\" data-end=\"1386\" \/>D) Microbiology<br data-start=\"1401\" data-end=\"1404\" \/><strong data-start=\"1404\" data-end=\"1415\">Answer:<\/strong> B) Mycology<\/p>\n<p data-start=\"1431\" data-end=\"1578\"><strong data-start=\"1431\" data-end=\"1478\">9. Which blood component helps in clotting?<\/strong><br data-start=\"1478\" data-end=\"1481\" \/>A) Plasma<br data-start=\"1490\" data-end=\"1493\" \/>B) Platelets<br data-start=\"1505\" data-end=\"1508\" \/>C) Red blood cells<br data-start=\"1526\" data-end=\"1529\" \/>D) White blood cells<br data-start=\"1549\" data-end=\"1552\" \/><strong data-start=\"1552\" data-end=\"1563\">Answer:<\/strong> B) Platelets<\/p>\n<p data-start=\"1580\" data-end=\"1727\"><strong data-start=\"1580\" data-end=\"1653\">10. Which part of a plant transports food from leaves to other parts?<\/strong><br data-start=\"1653\" data-end=\"1656\" \/>A) Xylem<br data-start=\"1664\" data-end=\"1667\" \/>B) Phloem<br data-start=\"1676\" data-end=\"1679\" \/>C) Cambium<br data-start=\"1689\" data-end=\"1692\" \/>D) Cortex<br data-start=\"1701\" data-end=\"1704\" \/><strong data-start=\"1704\" data-end=\"1715\">Answer:<\/strong> B) Phloem<\/p>\n<p data-start=\"169\" data-end=\"320\"><strong data-start=\"169\" data-end=\"226\">11. Which gas is released during aerobic respiration?<\/strong><br data-start=\"226\" data-end=\"229\" \/>A) Oxygen<br data-start=\"238\" data-end=\"241\" \/>B) Carbon dioxide<br data-start=\"258\" data-end=\"261\" \/>C) Nitrogen<br data-start=\"272\" data-end=\"275\" \/>D) Hydrogen<br data-start=\"286\" data-end=\"289\" \/><strong data-start=\"289\" data-end=\"300\">Answer:<\/strong> B) Carbon dioxide<\/p>\n<p data-start=\"322\" data-end=\"540\"><strong data-start=\"322\" data-end=\"389\">12. What is the main function of the large intestine in humans?<\/strong><br data-start=\"389\" data-end=\"392\" \/>A) Absorption of water and salts<br data-start=\"424\" data-end=\"427\" \/>B) Protein digestion<br data-start=\"447\" data-end=\"450\" \/>C) Blood filtration<br data-start=\"469\" data-end=\"472\" \/>D) Oxygen transport<br data-start=\"491\" data-end=\"494\" \/><strong data-start=\"494\" data-end=\"505\">Answer:<\/strong> A) Absorption of water and salts<\/p>\n<p data-start=\"542\" data-end=\"701\"><strong data-start=\"542\" data-end=\"610\">13. Which vitamin is important for maintaining healthy eyesight?<\/strong><br data-start=\"610\" data-end=\"613\" \/>A) Vitamin A<br data-start=\"625\" data-end=\"628\" \/>B) Vitamin B12<br data-start=\"642\" data-end=\"645\" \/>C) Vitamin C<br data-start=\"657\" data-end=\"660\" \/>D) Vitamin K<br data-start=\"672\" data-end=\"675\" \/><strong data-start=\"675\" data-end=\"686\">Answer:<\/strong> A) Vitamin A<\/p>\n<p data-start=\"703\" data-end=\"878\"><strong data-start=\"703\" data-end=\"761\">14. What is the primary function of white blood cells?<\/strong><br data-start=\"761\" data-end=\"764\" \/>A) Transport oxygen<br data-start=\"783\" data-end=\"786\" \/>B) Clot blood<br data-start=\"799\" data-end=\"802\" \/>C) Fight infections<br data-start=\"821\" data-end=\"824\" \/>D) Store nutrients<br data-start=\"842\" data-end=\"845\" \/><strong data-start=\"845\" data-end=\"856\">Answer:<\/strong> C) Fight infections<\/p>\n<p data-start=\"880\" data-end=\"1003\"><strong data-start=\"880\" data-end=\"924\">15. Which organ produces bile in humans?<\/strong><br data-start=\"924\" data-end=\"927\" \/>A) Pancreas<br data-start=\"938\" data-end=\"941\" \/>B) Liver<br data-start=\"949\" data-end=\"952\" \/>C) Gallbladder<br data-start=\"966\" data-end=\"969\" \/>D) Kidney<br data-start=\"978\" data-end=\"981\" \/><strong data-start=\"981\" data-end=\"992\">Answer:<\/strong> B) Liver<\/p>\n<p data-start=\"1005\" data-end=\"1167\"><strong data-start=\"1005\" data-end=\"1073\">16. Which plant tissue provides mechanical support and strength?<\/strong><br data-start=\"1073\" data-end=\"1076\" \/>A) Parenchyma<br data-start=\"1089\" data-end=\"1092\" \/>B) Collenchyma<br data-start=\"1106\" data-end=\"1109\" \/>C) Sclerenchyma<br data-start=\"1124\" data-end=\"1127\" \/>D) Xylem<br data-start=\"1135\" data-end=\"1138\" \/><strong data-start=\"1138\" data-end=\"1149\">Answer:<\/strong> C) Sclerenchyma<\/p>\n<p data-start=\"1169\" data-end=\"1344\"><strong data-start=\"1169\" data-end=\"1231\">17. What is the primary function of the stomata in leaves?<\/strong><br data-start=\"1231\" data-end=\"1234\" \/>A) Absorb water<br data-start=\"1249\" data-end=\"1252\" \/>B) Exchange gases<br data-start=\"1269\" data-end=\"1272\" \/>C) Transport food<br data-start=\"1289\" data-end=\"1292\" \/>D) Store nutrients<br data-start=\"1310\" data-end=\"1313\" \/><strong data-start=\"1313\" data-end=\"1324\">Answer:<\/strong> B) Exchange gases<\/p>\n<p data-start=\"1346\" data-end=\"1503\"><strong data-start=\"1346\" data-end=\"1415\">18. Which part of the neuron receives signals from other neurons?<\/strong><br data-start=\"1415\" data-end=\"1418\" \/>A) Axon<br data-start=\"1425\" data-end=\"1428\" \/>B) Dendrites<br data-start=\"1440\" data-end=\"1443\" \/>C) Cell body<br data-start=\"1455\" data-end=\"1458\" \/>D) Myelin sheath<br data-start=\"1474\" data-end=\"1477\" \/><strong data-start=\"1477\" data-end=\"1488\">Answer:<\/strong> B) Dendrites<\/p>\n<p data-start=\"1505\" data-end=\"1600\"><strong data-start=\"1505\" data-end=\"1551\">19. The human heart has how many chambers?<\/strong><br data-start=\"1551\" data-end=\"1554\" \/>A) 2<br data-start=\"1558\" data-end=\"1561\" \/>B) 3<br data-start=\"1565\" data-end=\"1568\" \/>C) 4<br data-start=\"1572\" data-end=\"1575\" \/>D) 5<br data-start=\"1579\" data-end=\"1582\" \/><strong data-start=\"1582\" data-end=\"1593\">Answer:<\/strong> C) 4<\/p>\n<p data-start=\"1602\" data-end=\"1766\"><strong data-start=\"1602\" data-end=\"1672\">20. Which macronutrient is the main source of energy for the body?<\/strong><br data-start=\"1672\" data-end=\"1675\" \/>A) Proteins<br data-start=\"1686\" data-end=\"1689\" \/>B) Carbohydrates<br data-start=\"1705\" data-end=\"1708\" \/>C) Vitamins<br data-start=\"1719\" data-end=\"1722\" \/>D) Minerals<br data-start=\"1733\" data-end=\"1736\" \/><strong data-start=\"1736\" data-end=\"1747\">Answer:<\/strong> B) Carbohydrates<\/p>\n<h2 data-start=\"123\" data-end=\"185\"><span class=\"ez-toc-section\" id=\"How_to_Prepare_for_Life_Science_with_Study_Notes_PDF\"><\/span><strong data-start=\"127\" data-end=\"183\">How to Prepare for Life Science with Study Notes PDF<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol data-start=\"187\" data-end=\"1147\">\n<li data-start=\"187\" data-end=\"323\">\n<p data-start=\"190\" data-end=\"323\"><strong data-start=\"190\" data-end=\"211\">Go Topic by Topic<\/strong><br data-start=\"211\" data-end=\"214\" \/>Start with one chapter or topic at a time. Read the notes carefully and focus on understanding concepts.<\/p>\n<\/li>\n<li data-start=\"325\" data-end=\"442\">\n<p data-start=\"328\" data-end=\"442\"><strong data-start=\"328\" data-end=\"348\">Make Short Notes<\/strong><br data-start=\"348\" data-end=\"351\" \/>Highlight key points or create your own quick reference notes for easy revision later.<\/p>\n<\/li>\n<li data-start=\"444\" data-end=\"606\">\n<p data-start=\"447\" data-end=\"606\"><strong data-start=\"447\" data-end=\"472\">Use Diagrams &amp; Charts<\/strong><br data-start=\"472\" data-end=\"475\" \/>Life Science involves plants, human body, and ecology. Use the diagrams in the PDF to visualize processes and remember better.<\/p>\n<\/li>\n<li data-start=\"608\" data-end=\"732\">\n<p data-start=\"611\" data-end=\"732\"><strong data-start=\"611\" data-end=\"638\">Practice MCQs &amp; Quizzes<\/strong><br data-start=\"638\" data-end=\"641\" \/>After each topic, solve the MCQs and quizzes in the notes to check your understanding.<\/p>\n<\/li>\n<li data-start=\"734\" data-end=\"864\">\n<p data-start=\"737\" data-end=\"864\"><strong data-start=\"737\" data-end=\"757\">Revise Regularly<\/strong><br data-start=\"757\" data-end=\"760\" \/>Revisit your notes frequently. Short, repeated revisions help retain facts, terms, and definitions.<\/p>\n<\/li>\n<li data-start=\"866\" data-end=\"1028\">\n<p data-start=\"869\" data-end=\"1028\"><strong data-start=\"869\" data-end=\"909\">Combine with Previous Year Questions<\/strong><br data-start=\"909\" data-end=\"912\" \/>Practice past Kerala PSC Life Science questions to get familiar with exam patterns and frequently asked topics.<\/p>\n<\/li>\n<li data-start=\"1030\" data-end=\"1147\">\n<p data-start=\"1033\" data-end=\"1147\"><strong data-start=\"1033\" data-end=\"1056\">Focus on Weak Areas<\/strong><br data-start=\"1056\" data-end=\"1059\" \/>Spend extra time on topics you find difficult, using the notes to clarify concepts.<\/p>\n<\/li>\n<\/ol>\n<div class=\"modal\" id=\"modal25556384\"><div class=\"modal-content\"><span class=\"close-button\">&times;<\/span>\n\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f25556384-o1\" lang=\"en-US\" dir=\"ltr\" data-wpcf7-id=\"25556384\">\n<div 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<script>document.addEventListener(\"DOMContentLoaded\",function(){document.querySelectorAll('.wpcf7-form').forEach(function(e){e.addEventListener('submit',function(){if(document.getElementById('cf-turnstile-cf7-263269827')){setTimeout(function(){turnstile.reset('#cf-turnstile-cf7-263269827');},1000)}})})});<\/script> <\/div><br\/><input class=\"wpcf7-form-control wpcf7-submit has-spinner\" type=\"submit\" value=\"Submit\" \/>\n\t\t<\/p>\n\t<\/div>\n<\/div><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<\/form>\n<\/div>\n\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Life Science is a key subject in Kerala PSC exams and questions from this area appear at all levels, from 10th to Degree-based exams. To help aspirants, we\u2019ve prepared expert-made Life Science notes in PDF format, available for free in this blog. These notes cover important topics, make concepts easy to understand, and are perfect [&hellip;]<\/p>\n","protected":false},"author":115,"featured_media":25624961,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[802,32],"tags":[],"class_list":["post-25624960","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles","category-kerala-psc"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Life Science Study Notes 2025 for Kerala PSC Exams: Quiz, MCQs<\/title>\n<meta name=\"description\" content=\"Download Kerala PSC Life Science Study Notes 2025 with free PDF, MCQs &amp; quiz. 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