\ud83e\udde0 Science Quiz \u2013 Levels of Biological Organisation<\/title>\n\n<style>\nbody {\n font-family: Arial, sans-serif;\n background: linear-gradient(135deg, #a1c4fd, #c2e9fb);\n display: flex;\n justify-content: center;\n align-items: flex-start;\n padding: 30px;\n min-height: 100vh;\n}\n\n.quiz-container {\n background: #fff;\n padding: 25px;\n border-radius: 12px;\n box-shadow: 0 4px 10px rgba(0,0,0,0.2);\n width: 90%;\n max-width: 800px;\n}\n\nh2 {\n text-align: center;\n color: #1e3c72;\n}\n\n.question {\n font-weight: bold;\n margin: 10px 0;\n}\n\n.options label {\n display: block;\n margin: 8px 0;\n padding: 10px;\n border-radius: 6px;\n border: 1px solid #ccc;\n cursor: pointer;\n transition: 0.3s;\n}\n\n.options label:hover {\n background: #f0f0f0;\n}\n\n.correct {\n background-color: #c8f7c5 !important;\n border-color: #28a745 !important;\n}\n\n.wrong {\n background-color: #f8d7da !important;\n border-color: #dc3545 !important;\n}\n\n.explanation {\n background: #e9ecef;\n padding: 10px;\n margin-top: 10px;\n border-left: 5px solid #2a5298;\n display: none;\n}\n\n.controls {\n text-align: center;\n margin-top: 15px;\n}\n\nbutton {\n background-color: #2a5298;\n color: white;\n border: none;\n padding: 10px 20px;\n border-radius: 6px;\n cursor: pointer;\n margin: 5px;\n}\n\nbutton:hover {\n background-color: #1e3c72;\n}\n\n#scoreboard {\n margin-top: 25px;\n background: #eef3f7;\n padding: 15px;\n border-radius: 8px;\n}\n\n#scoreboard h3 {\n text-align: center;\n}\n\nol {\n padding-left: 20px;\n}\n\n#userName {\n padding: 10px;\n width: 90%;\n max-width: 300px;\n margin-bottom: 10px;\n border: 1px solid #ccc;\n border-radius: 6px;\n}\n<\/style>\n<\/head>\n\n<body>\n\n<div class=\"quiz-container\">\n\n <h2>\ud83e\udde0 Science Quiz \u2013 Levels of Biological Organisation<\/h2>\n\n <div id=\"nameSection\">\n <p><strong>Enter your name to start:<\/strong><\/p>\n <input type=\"text\" id=\"userName\" placeholder=\"Your Name\">\n <button onclick=\"startQuiz()\">Start Quiz<\/button>\n <\/div>\n\n <div id=\"quizSection\" style=\"display:none;\">\n\n <div id=\"questionContainer\"><\/div>\n\n <div class=\"controls\">\n <button onclick=\"prevQuestion()\" id=\"prevBtn\">Previous<\/button>\n <button onclick=\"nextQuestion()\" id=\"nextBtn\">Next<\/button>\n <button onclick=\"submitQuiz()\" id=\"submitBtn\" style=\"display:none;\">Submit<\/button>\n <\/div>\n\n <div id=\"result\" style=\"text-align:center; margin-top:20px;\"><\/div>\n\n <div id=\"scoreboard\">\n <h3>\ud83c\udfc6 Scoreboard<\/h3>\n <ol id=\"scoreList\"><\/ol>\n <\/div>\n\n <\/div>\n<\/div>\n\n<script>\n\nconst questions = [\n\n{\n question: \"1. Living organism mein life ki basic unit kya hoti hai?\",\n options: [\n \"A. Tissue\",\n \"B. Organ\",\n \"C. Cell\",\n \"D. Organ system\"\n ],\n correct: 2,\n explanation: \"Cell living organisms ki basic structural aur functional unit hoti hai. Sabhi living organisms cells se bane hote hain, although kuch organisms sirf ek cell ke hote hain.<br><br><b>Example:<\/b> Human body mein muscle cells movement mein help karti hain, jabki nerve cells messages transmit karti hain.\"\n},\n\n{\n question: \"2. Similar cells ka group milkar kya banata hai?\",\n options: [\n \"A. Tissue\",\n \"B. Organ\",\n \"C. Organ system\",\n \"D. Organism\"\n ],\n correct: 0,\n explanation: \"Similar cells jo milkar ek particular function perform karti hain, tissue banati hain.<br><br><b>Example:<\/b> Muscle tissue bahut saari muscle cells se milkar bana hota hai aur body movement mein help karta hai.\"\n},\n\n{\n question: \"3. Different tissues milkar kya form karte hain?\",\n options: [\n \"A. Cell\",\n \"B. Organism\",\n \"C. Cell membrane\",\n \"D. Organ\"\n ],\n correct: 3,\n explanation: \"Different types ke tissues organised way mein milkar organ banate hain. Ek organ usually ek particular function ya related functions perform karta hai.<br><br><b>Example:<\/b> Stomach mein muscle tissue food ko churn karta hai aur lining ke specialised cells digestive substances produce karte hain.\"\n},\n\n{\n question: \"4. Several organs milkar kya banate hain?\",\n options: [\n \"A. Tissue\",\n \"B. Organ system\",\n \"C. Cell\",\n \"D. Nucleus\"\n ],\n correct: 1,\n explanation: \"Several organs milkar coordinated way mein ek major body function perform karte hain. Aise group ko organ system kehte hain.<br><br><b>Example:<\/b> Mouth, food pipe, stomach aur intestines milkar digestive system ka part hain aur food digestion mein help karte hain.\"\n},\n\n{\n question: \"5. Biological organisation ka correct order kya hai, simplest se most complex tak?\",\n options: [\n \"A. Tissue \u2192 Cell \u2192 Organ \u2192 Organism \u2192 Organ system\",\n \"B. Organ \u2192 Tissue \u2192 Cell \u2192 Organ system \u2192 Organism\",\n \"C. Cell \u2192 Tissue \u2192 Organ \u2192 Organ system \u2192 Organism\",\n \"D. Cell \u2192 Organ \u2192 Tissue \u2192 Organism \u2192 Organ system\"\n ],\n correct: 2,\n explanation: \"Cells milkar tissues banati hain, tissues organs banate hain, organs organ systems banate hain aur organ systems milkar complete organism banate hain.<br><br><b>Example:<\/b> Muscle cell \u2192 Muscle tissue \u2192 Heart \u2192 Circulatory system \u2192 Human being.\"\n},\n\n{\n question: \"6. Brick aur wall ka example cells ko samajhne mein kaise help karta hai?\",\n options: [\n \"A. Cell ek brick ki tarah basic building unit hai\",\n \"B. Cell sirf wall ke bahar hoti hai\",\n \"C. Tissue ek single brick hota hai\",\n \"D. Organism sirf ek tissue hota hai\"\n ],\n correct: 0,\n explanation: \"Jaise bahut saari bricks milkar wall banati hain, waise hi cells organised hokar tissues aur body ke complex structures banati hain.<br><br><b>Example:<\/b> Bricks se wall banti hai; cells se tissues bante hain, aur tissues se organs ban sakte hain.\"\n},\n\n{\n question: \"7. Multicellular organism kise kehte hain?\",\n options: [\n \"A. Jo bilkul living nahi hota\",\n \"B. Jo sirf ek cell se bana hota hai\",\n \"C. Jisme sirf ek organ hota hai\",\n \"D. Jo bahut saari cells se bana hota hai\"\n ],\n correct: 3,\n explanation: \"Multicellular organisms mein many cells hoti hain. Different cells specialised functions perform kar sakti hain.<br><br><b>Example:<\/b> Humans, dogs aur mango plants multicellular organisms hain.\"\n},\n\n{\n question: \"8. Complex multicellular organisms ki life aam taur par kis single cell se shuru hoti hai?\",\n options: [\n \"A. Red blood cell\",\n \"B. Egg cell\",\n \"C. Muscle cell\",\n \"D. Nerve cell\"\n ],\n correct: 1,\n explanation: \"Many multicellular organisms mein development fertilised egg cell se shuru hota hai. Yeh cell repeatedly divide karti hai aur aage chal kar many cells aur tissues form hote hain.<br><br><b>Example:<\/b> Human development fertilised egg, yani zygote, se shuru hota hai, jo repeated cell divisions se grow karta hai.\"\n},\n\n{\n question: \"9. Human body mein heart kis level of organisation ka example hai?\",\n options: [\n \"A. Cell\",\n \"B. Tissue\",\n \"C. Organ\",\n \"D. Organ system\"\n ],\n correct: 2,\n explanation: \"Heart ek organ hai kyunki ismein different tissues organised hote hain aur yeh blood pump karta hai. Heart circulatory system ka part hai.<br><br><b>Example:<\/b> Heart blood ko blood vessels ke through body ke different parts tak pump karta hai.\"\n},\n\n{\n question: \"10. Organ systems ka main role kya hai?\",\n options: [\n \"A. Body ke major functions ko milkar perform karna\",\n \"B. Sirf ek cell banana\",\n \"C. Sirf cell ka shape change karna\",\n \"D. Sabhi tissues ko destroy karna\"\n ],\n correct: 0,\n explanation: \"Organ systems ke organs coordinated way mein kaam karte hain. Sabhi organ systems milkar organism ko survive karne, grow karne aur function karne mein help karte hain.<br><br><b>Example:<\/b> Respiratory system oxygen provide karta hai aur circulatory system oxygen ko body cells tak transport karta hai. 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{"id":5358,"date":"2026-11-02T14:21:41","date_gmt":"2026-11-02T14:21:41","guid":{"rendered":"https:\/\/apicalclasses.com\/?p=5358"},"modified":"2026-11-02T14:21:42","modified_gmt":"2026-11-02T14:21:42","slug":"class-8th-subject-sciencech2-4","status":"publish","type":"post","link":"https:\/\/apicalclasses.com\/?p=5358","title":{"rendered":"class 8th, subject science,ch2"},"content":{"rendered":"\n\n\n\n\n\n\n\n\n\n\ud83e\udde0 Science Quiz \u2013 Levels of Biological Organisation<\/title>\n\n<style>\nbody {\n font-family: Arial, sans-serif;\n background: linear-gradient(135deg, #a1c4fd, #c2e9fb);\n display: flex;\n justify-content: center;\n align-items: flex-start;\n padding: 30px;\n min-height: 100vh;\n}\n\n.quiz-container {\n background: #fff;\n padding: 25px;\n border-radius: 12px;\n box-shadow: 0 4px 10px rgba(0,0,0,0.2);\n width: 90%;\n max-width: 800px;\n}\n\nh2 {\n text-align: center;\n color: #1e3c72;\n}\n\n.question {\n font-weight: bold;\n margin: 10px 0;\n}\n\n.options label {\n display: block;\n margin: 8px 0;\n padding: 10px;\n border-radius: 6px;\n border: 1px solid #ccc;\n cursor: pointer;\n transition: 0.3s;\n}\n\n.options label:hover {\n background: #f0f0f0;\n}\n\n.correct {\n background-color: #c8f7c5 !important;\n border-color: #28a745 !important;\n}\n\n.wrong {\n background-color: #f8d7da !important;\n border-color: #dc3545 !important;\n}\n\n.explanation {\n background: #e9ecef;\n padding: 10px;\n margin-top: 10px;\n border-left: 5px solid #2a5298;\n display: none;\n}\n\n.controls {\n text-align: center;\n margin-top: 15px;\n}\n\nbutton {\n background-color: #2a5298;\n color: white;\n border: none;\n padding: 10px 20px;\n border-radius: 6px;\n cursor: pointer;\n margin: 5px;\n}\n\nbutton:hover {\n background-color: #1e3c72;\n}\n\n#scoreboard {\n margin-top: 25px;\n background: #eef3f7;\n padding: 15px;\n border-radius: 8px;\n}\n\n#scoreboard h3 {\n text-align: center;\n}\n\nol {\n padding-left: 20px;\n}\n\n#userName {\n padding: 10px;\n width: 90%;\n max-width: 300px;\n margin-bottom: 10px;\n border: 1px solid #ccc;\n border-radius: 6px;\n}\n<\/style>\n<\/head>\n\n<body>\n\n<div class=\"quiz-container\">\n\n <h2>\ud83e\udde0 Science Quiz \u2013 Levels of Biological Organisation<\/h2>\n\n <div id=\"nameSection\">\n <p><strong>Enter your name to start:<\/strong><\/p>\n <input type=\"text\" id=\"userName\" placeholder=\"Your Name\">\n <button onclick=\"startQuiz()\">Start Quiz<\/button>\n <\/div>\n\n <div id=\"quizSection\" style=\"display:none;\">\n\n <div id=\"questionContainer\"><\/div>\n\n <div class=\"controls\">\n <button onclick=\"prevQuestion()\" id=\"prevBtn\">Previous<\/button>\n <button onclick=\"nextQuestion()\" id=\"nextBtn\">Next<\/button>\n <button onclick=\"submitQuiz()\" id=\"submitBtn\" style=\"display:none;\">Submit<\/button>\n <\/div>\n\n <div id=\"result\" style=\"text-align:center; margin-top:20px;\"><\/div>\n\n <div id=\"scoreboard\">\n <h3>\ud83c\udfc6 Scoreboard<\/h3>\n <ol id=\"scoreList\"><\/ol>\n <\/div>\n\n <\/div>\n<\/div>\n\n<script>\n\nconst questions = [\n\n{\n question: \"1. Living organism mein life ki basic unit kya hoti hai?\",\n options: [\n \"A. Tissue\",\n \"B. Organ\",\n \"C. Cell\",\n \"D. Organ system\"\n ],\n correct: 2,\n explanation: \"Cell living organisms ki basic structural aur functional unit hoti hai. Sabhi living organisms cells se bane hote hain, although kuch organisms sirf ek cell ke hote hain.<br><br><b>Example:<\/b> Human body mein muscle cells movement mein help karti hain, jabki nerve cells messages transmit karti hain.\"\n},\n\n{\n question: \"2. Similar cells ka group milkar kya banata hai?\",\n options: [\n \"A. Tissue\",\n \"B. Organ\",\n \"C. Organ system\",\n \"D. Organism\"\n ],\n correct: 0,\n explanation: \"Similar cells jo milkar ek particular function perform karti hain, tissue banati hain.<br><br><b>Example:<\/b> Muscle tissue bahut saari muscle cells se milkar bana hota hai aur body movement mein help karta hai.\"\n},\n\n{\n question: \"3. Different tissues milkar kya form karte hain?\",\n options: [\n \"A. Cell\",\n \"B. Organism\",\n \"C. Cell membrane\",\n \"D. Organ\"\n ],\n correct: 3,\n explanation: \"Different types ke tissues organised way mein milkar organ banate hain. Ek organ usually ek particular function ya related functions perform karta hai.<br><br><b>Example:<\/b> Stomach mein muscle tissue food ko churn karta hai aur lining ke specialised cells digestive substances produce karte hain.\"\n},\n\n{\n question: \"4. Several organs milkar kya banate hain?\",\n options: [\n \"A. Tissue\",\n \"B. Organ system\",\n \"C. Cell\",\n \"D. Nucleus\"\n ],\n correct: 1,\n explanation: \"Several organs milkar coordinated way mein ek major body function perform karte hain. Aise group ko organ system kehte hain.<br><br><b>Example:<\/b> Mouth, food pipe, stomach aur intestines milkar digestive system ka part hain aur food digestion mein help karte hain.\"\n},\n\n{\n question: \"5. Biological organisation ka correct order kya hai, simplest se most complex tak?\",\n options: [\n \"A. 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Muscle cell\",\n \"D. Nerve cell\"\n ],\n correct: 1,\n explanation: \"Many multicellular organisms mein development fertilised egg cell se shuru hota hai. Yeh cell repeatedly divide karti hai aur aage chal kar many cells aur tissues form hote hain.<br><br><b>Example:<\/b> Human development fertilised egg, yani zygote, se shuru hota hai, jo repeated cell divisions se grow karta hai.\"\n},\n\n{\n question: \"9. Human body mein heart kis level of organisation ka example hai?\",\n options: [\n \"A. Cell\",\n \"B. Tissue\",\n \"C. Organ\",\n \"D. Organ system\"\n ],\n correct: 2,\n explanation: \"Heart ek organ hai kyunki ismein different tissues organised hote hain aur yeh blood pump karta hai. Heart circulatory system ka part hai.<br><br><b>Example:<\/b> Heart blood ko blood vessels ke through body ke different parts tak pump karta hai.\"\n},\n\n{\n question: \"10. Organ systems ka main role kya hai?\",\n options: [\n \"A. Body ke major functions ko milkar perform karna\",\n \"B. Sirf ek cell banana\",\n \"C. Sirf cell ka shape change karna\",\n \"D. Sabhi tissues ko destroy karna\"\n ],\n correct: 0,\n explanation: \"Organ systems ke organs coordinated way mein kaam karte hain. Sabhi organ systems milkar organism ko survive karne, grow karne aur function karne mein help karte hain.<br><br><b>Example:<\/b> Respiratory system oxygen provide karta hai aur circulatory system oxygen ko body cells tak transport karta hai. 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