{"id":2407,"date":"2026-05-28T17:25:43","date_gmt":"2026-05-28T11:55:43","guid":{"rendered":"https:\/\/mymockmate.com\/notes\/?p=2407"},"modified":"2026-05-28T17:25:46","modified_gmt":"2026-05-28T11:55:46","slug":"ncert-class-9-science-cell-the-building-block-of-life-complete-solutions","status":"publish","type":"post","link":"https:\/\/mymockmate.com\/notes\/ncert-class-9-science-cell-the-building-block-of-life-complete-solutions\/","title":{"rendered":"NCERT Class 9 Science Cell: The Building Block of Life Complete Solutions"},"content":{"rendered":"<div class=\"pdfprnt-buttons pdfprnt-buttons-post pdfprnt-top-bottom-right\"><a href=\"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2407?print=print\" class=\"pdfprnt-button pdfprnt-button-print\" target=\"_blank\" ><img decoding=\"async\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/plugins\/pdf-print\/images\/print.png\" alt=\"image_print\" title=\"Print Content\" \/><span class=\"pdfprnt-button-title pdfprnt-button-print-title\">Print<\/span><\/a> <span class=\"pdfprnt-count-generation\">1<\/span><\/div>\n<h1 class=\"wp-block-heading\">Short Intro<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Cells are the fundamental units of life that perform all essential activities in living organisms. This chapter explains the discovery of cells, structure and functions of cell organelles, types of cells, osmosis, diffusion, mitosis, meiosis, and cell theory. These detailed solutions help students understand concepts easily with step-by-step explanations.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Quick Information Box<\/h1>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Topic<\/th><th>Details<\/th><\/tr><\/thead><tbody><tr><td>Chapter Name<\/td><td>Cell: The Building Block of Life<\/td><\/tr><tr><td>Subject<\/td><td>Science<\/td><\/tr><tr><td>Grade<\/td><td>9<\/td><\/tr><tr><td>Chapter Number<\/td><td>2<\/td><\/tr><tr><td>Main Focus<\/td><td>Cell Structure and Functions<\/td><\/tr><tr><td>Important Topics<\/td><td>Cell Organelles, Osmosis, Cell Division<\/td><\/tr><tr><td>Difficulty Level<\/td><td>Moderate<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">Concepts Used (Topics Covered)<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Discovery of Cells<\/li>\n\n\n\n<li>Microscope and Cell Observation<\/li>\n\n\n\n<li>Cell Membrane and Cell Wall<\/li>\n\n\n\n<li>Diffusion and Osmosis<\/li>\n\n\n\n<li>Prokaryotic and Eukaryotic Cells<\/li>\n\n\n\n<li>Cell Organelles and Their Functions<\/li>\n\n\n\n<li>Plant Cell vs Animal Cell<\/li>\n\n\n\n<li>Mitosis and Meiosis<\/li>\n\n\n\n<li>Cell Theory<\/li>\n\n\n\n<li>Cell Division and Growth<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Important Formulas<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Cell Size Estimation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mtext>Cell&nbsp;Size<\/mtext><mo>=<\/mo><mfrac><mtext>Diameter&nbsp;of&nbsp;Field&nbsp;of&nbsp;View<\/mtext><mtext>Number&nbsp;of&nbsp;Cells<\/mtext><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">\\text{Cell Size}=\\frac{\\text{Diameter of Field of View}}{\\text{Number of Cells}}<\/annotation><\/semantics><\/math><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Magnification Formula<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mtext>Total&nbsp;Magnification<\/mtext><mo>=<\/mo><mtext>Eyepiece&nbsp;Power<\/mtext><mo>\u00d7<\/mo><mtext>Objective&nbsp;Lens&nbsp;Power<\/mtext><\/mrow><annotation encoding=\"application\/x-tex\">\\text{Total Magnification}=\\text{Eyepiece Power}\\times\\text{Objective Lens Power}<\/annotation><\/semantics><\/math>Total&nbsp;Magnification=Eyepiece&nbsp;Power\u00d7Objective&nbsp;Lens&nbsp;Power<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Osmosis Concept<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mtext>Water&nbsp;moves&nbsp;from&nbsp;dilute&nbsp;solution&nbsp;to&nbsp;concentrated&nbsp;solution&nbsp;through&nbsp;a&nbsp;selectively&nbsp;permeable&nbsp;membrane<\/mtext><\/mrow><annotation encoding=\"application\/x-tex\">\\text{Water moves from dilute solution to concentrated solution through a selectively permeable membrane}<\/annotation><\/semantics><\/math>Water&nbsp;moves&nbsp;from&nbsp;dilute&nbsp;solution&nbsp;to&nbsp;concentrated&nbsp;solution&nbsp;through&nbsp;a&nbsp;selectively&nbsp;permeable&nbsp;membrane<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Questions &amp; Step-by-step Solutions with Explanation<\/h1>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">1. Differentiate Between the Following<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">(i) Cell Membrane and Cell Wall<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Cell Membrane<\/th><th>Cell Wall<\/th><\/tr><\/thead><tbody><tr><td>Selectively permeable<\/td><td>Freely permeable<\/td><\/tr><tr><td>Thin and flexible<\/td><td>Thick and rigid<\/td><\/tr><tr><td>Present in all cells<\/td><td>Present mainly in plant, fungal and bacterial cells<\/td><\/tr><tr><td>Made of lipids and proteins<\/td><td>Made mainly of cellulose in plants<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">(ii) RER and SER<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>RER<\/th><th>SER<\/th><\/tr><\/thead><tbody><tr><td>Ribosomes present<\/td><td>Ribosomes absent<\/td><\/tr><tr><td>Rough appearance<\/td><td>Smooth appearance<\/td><\/tr><tr><td>Protein synthesis<\/td><td>Lipid and hormone synthesis<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">(iii) Chloroplasts and Chromoplasts<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Chloroplasts<\/th><th>Chromoplasts<\/th><\/tr><\/thead><tbody><tr><td>Contain green chlorophyll pigment<\/td><td>Contain red, yellow or orange pigments<\/td><\/tr><tr><td>Perform photosynthesis<\/td><td>Give colour to fruits and flowers<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">2. Animal Cells in Different Solutions<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Correct Answer<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">(iii) Water moved into Cell X and moved out of Cell Y through the cell membrane.<\/h3>\n\n\n\n<h2 class=\"wp-block-heading\">Explanation<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Cell X in Pure Water<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Water enters the cell due to osmosis, causing swelling.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Cell Y in Salt Solution<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Water leaves the cell because the outside solution is more concentrated, causing shrinking.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">3. Identify the Parts of the Cell Diagram<\/h1>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Label<\/th><th>Cell Part<\/th><th>Function<\/th><\/tr><\/thead><tbody><tr><td>(a)<\/td><td>Cell Wall<\/td><td>Provides rigidity<\/td><\/tr><tr><td>(b)<\/td><td>Cell Membrane<\/td><td>Separates cell from surroundings<\/td><\/tr><tr><td>(c)<\/td><td>Nucleus<\/td><td>Controls cell activities<\/td><\/tr><tr><td>(d)<\/td><td>Vacuole<\/td><td>Storage and rigidity<\/td><\/tr><tr><td>(e)<\/td><td>Chloroplast<\/td><td>Food synthesis<\/td><\/tr><tr><td>(f)<\/td><td>Mitochondria<\/td><td>Cellular respiration<\/td><\/tr><tr><td>(g)<\/td><td>Golgi Apparatus<\/td><td>Packaging and storage<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">4. Correct Option of Organelles<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Correct Answer<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">(i) Leucoplast \u2014 Cell wall<\/h3>\n\n\n\n<h2 class=\"wp-block-heading\">Explanation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Leucoplasts and cell walls are present in plant cells but absent in animal cells.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">5. Discussion on Plastids<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Correct Answer<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Renu is correct.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Explanation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Roots also contain plastids called leucoplasts that store food materials like starch even though they do not perform photosynthesis.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">6. Similarities and Differences Between Mitochondria and Chloroplasts<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Similarities<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Both are double membrane-bound organelles.<\/li>\n\n\n\n<li>Both contain DNA and ribosomes.<\/li>\n\n\n\n<li>Both can synthesise some proteins independently.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Differences<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Mitochondria<\/th><th>Chloroplast<\/th><\/tr><\/thead><tbody><tr><td>Present in plant and animal cells<\/td><td>Present only in plant cells<\/td><\/tr><tr><td>Perform cellular respiration<\/td><td>Perform photosynthesis<\/td><\/tr><tr><td>Release energy<\/td><td>Prepare food<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">7. Organelles Containing DNA<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Correct Answer<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">(ii) Mitochondria, Nucleus<\/h3>\n\n\n\n<h2 class=\"wp-block-heading\">Explanation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Both organelles contain genetic material.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">8. Carrot Experiment<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">(i) Hypothesis<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Water movement occurs through osmosis.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">(ii) Improvement<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Measure carrot weight before and after the experiment.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">(iii) Explanation<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Carrot in water absorbs water and stays firm.<\/li>\n\n\n\n<li>Carrot in salt solution loses water and becomes limp.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">9. Presence or Absence of Structures<\/h1>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Structure<\/th><th>Bacterial Cell<\/th><th>Animal Cell<\/th><\/tr><\/thead><tbody><tr><td>Chromosome<\/td><td>Present<\/td><td>Present<\/td><\/tr><tr><td>Nucleus<\/td><td>Absent<\/td><td>Present<\/td><\/tr><tr><td>Mitochondria<\/td><td>Absent<\/td><td>Present<\/td><\/tr><tr><td>Golgi Complex<\/td><td>Absent<\/td><td>Present<\/td><\/tr><tr><td>Chromoplasts<\/td><td>Absent<\/td><td>Absent<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">10. Potato Cup Experiment<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">(i) Why Water Collects in Cups B and C<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sugar and salt create concentrated solutions, causing water to move through osmosis.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">(ii) Why Cup A is Necessary<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">It acts as a control setup for comparison.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">(iii) Why Water Does Not Collect in A and D<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cup A contains no solute.<\/li>\n\n\n\n<li>Boiled potato in D has damaged membranes, so osmosis cannot occur.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">11. Incorrect Match<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Correct Answer<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">(ii) SER \u2014 Lipid and cellulose synthesis<\/h3>\n\n\n\n<h2 class=\"wp-block-heading\">Explanation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SER synthesises lipids and hormones, not cellulose.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">12. Removal of Mitochondria from Cell<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Answer<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The cell will not be able to produce sufficient ATP energy and may eventually die.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">13. Tumor Prevention<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Answer<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Contact inhibition prevents uncontrolled cell division.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Can Plants Develop Tumors?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Yes, plants can also develop tumors due to uncontrolled cell growth.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">14. Cell Membrane Synthesis<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Organelles Involved<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SER synthesises lipids<\/li>\n\n\n\n<li>RER synthesises proteins<\/li>\n\n\n\n<li>Golgi apparatus packages them<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Pathway<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mi>R<\/mi><mi>E<\/mi><mi>R<\/mi><mi mathvariant=\"normal\">\/<\/mi><mi>S<\/mi><mi>E<\/mi><mi>R<\/mi><mo>\u2192<\/mo><mi>G<\/mi><mi>o<\/mi><mi>l<\/mi><mi>g<\/mi><mi>i<\/mi><mtext>&nbsp;<\/mtext><mi>A<\/mi><mi>p<\/mi><mi>p<\/mi><mi>a<\/mi><mi>r<\/mi><mi>a<\/mi><mi>t<\/mi><mi>u<\/mi><mi>s<\/mi><mo>\u2192<\/mo><mi>V<\/mi><mi>e<\/mi><mi>s<\/mi><mi>i<\/mi><mi>c<\/mi><mi>l<\/mi><mi>e<\/mi><mi>s<\/mi><mo>\u2192<\/mo><mi>C<\/mi><mi>e<\/mi><mi>l<\/mi><mi>l<\/mi><mtext>&nbsp;<\/mtext><mi>M<\/mi><mi>e<\/mi><mi>m<\/mi><mi>b<\/mi><mi>r<\/mi><mi>a<\/mi><mi>n<\/mi><mi>e<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">RER\/SER\\rightarrow Golgi\\ Apparatus\\rightarrow Vesicles\\rightarrow Cell\\ Membrane<\/annotation><\/semantics><\/math>RER\/SER\u2192Golgi&nbsp;Apparatus\u2192Vesicles\u2192Cell&nbsp;Membrane<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Explanation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Proteins and lipids are transported through vesicles to form the cell membrane.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">15. If Gametes Were Formed by Mitosis<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Answer<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Gametes would contain the full chromosome number. After fertilisation, chromosome numbers would double in every generation causing abnormalities.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">16. Food Preservation Case Study<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">(i) Scientific Concept<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Osmosis and food preservation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">(ii) How Salt and Sugar Prevent Spoilage<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">High salt or sugar concentration removes water from microorganisms causing dehydration and preventing growth.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">(iii) Healthy Recipe Suggestion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Lemon pickle with less oil and natural spices.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">(iv) Scientific Values<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Scientific thinking<\/li>\n\n\n\n<li>Resource management<\/li>\n\n\n\n<li>Food preservation awareness<\/li>\n\n\n\n<li>Sustainable development<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Common Mistakes<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Confusing osmosis with diffusion<\/li>\n\n\n\n<li>Forgetting functions of organelles<\/li>\n\n\n\n<li>Mixing up mitosis and meiosis<\/li>\n\n\n\n<li>Writing incorrect differences between plant and animal cells<\/li>\n\n\n\n<li>Forgetting that mitochondria contain DNA<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Exam Tips<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Practice labelled diagrams regularly<\/li>\n\n\n\n<li>Learn organelle functions with keywords<\/li>\n\n\n\n<li>Use tables for comparisons<\/li>\n\n\n\n<li>Revise osmosis experiments carefully<\/li>\n\n\n\n<li>Remember definitions of prokaryotic and eukaryotic cells<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Practice MCQs<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1. Which organelle is known as the powerhouse of the cell?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A. Ribosome<br>B. Chloroplast<br>C. Mitochondria<br>D. Golgi Body<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C. Mitochondria<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. Osmosis involves movement of:<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A. Salt<br>B. Sugar<br>C. Water<br>D. Proteins<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C. Water<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. Which organelle contains chlorophyll?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A. Mitochondria<br>B. Chloroplast<br>C. Vacuole<br>D. Nucleus<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B. Chloroplast<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. Which cell lacks a true nucleus?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A. Plant Cell<br>B. Animal Cell<br>C. Bacterial Cell<br>D. Fungal Cell<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C. Bacterial Cell<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. Mitosis produces:<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A. Four daughter cells<br>B. Two identical daughter cells<br>C. Gametes<br>D. Spores<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B. Two identical daughter cells<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">FAQ Section<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Q1. Why is the cell called the basic unit of life?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Because all living organisms are made up of cells and all life processes occur within cells.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q2. What is osmosis?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Osmosis is the movement of water through a selectively permeable membrane from dilute to concentrated solution.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q3. What is the function of mitochondria?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Mitochondria produce ATP energy through cellular respiration.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q4. Why do plant cells have a cell wall?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The cell wall provides rigidity, protection, and shape to plant cells.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q5. What is the difference between mitosis and meiosis?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Mitosis forms two identical cells, while meiosis forms four gametes with half chromosome number.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Get more detailed Grade 9 Science notes, MCQs, important questions, and chapter-wise solutions only on <a target=\"_blank\" rel=\"noreferrer noopener\">www.mymockmate.com<\/a> and boost your exam preparation today!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<div class=\"pdfprnt-buttons pdfprnt-buttons-post pdfprnt-top-bottom-right\"><a href=\"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2407?print=print\" class=\"pdfprnt-button pdfprnt-button-print\" target=\"_blank\" ><img decoding=\"async\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/plugins\/pdf-print\/images\/print.png\" alt=\"image_print\" title=\"Print Content\" \/><span class=\"pdfprnt-button-title pdfprnt-button-print-title\">Print<\/span><\/a> <span class=\"pdfprnt-count-generation\">1<\/span><\/div>\n    <div class=\"xs_social_share_widget xs_share_url after_content \t\tmain_content  wslu-style-1 wslu-share-box-shaped wslu-fill-colored wslu-none wslu-share-horizontal wslu-theme-font-no wslu-main_content\">\n\n\t\t\n        <ul>\n\t\t\t        <\/ul>\n    <\/div> \n","protected":false},"excerpt":{"rendered":"<p> 1 Short Intro Cells are the fundamental units of life that perform all essential activities in living<\/p>\n","protected":false},"author":3,"featured_media":2659,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_surecart_dashboard_logo_width":"180px","_surecart_dashboard_show_logo":true,"_surecart_dashboard_navigation_orders":true,"_surecart_dashboard_navigation_invoices":true,"_surecart_dashboard_navigation_subscriptions":true,"_surecart_dashboard_navigation_downloads":true,"_surecart_dashboard_navigation_billing":true,"_surecart_dashboard_navigation_account":true,"postBodyCss":"","postBodyMargin":[],"postBodyPadding":[],"postBodyBackground":{"backgroundType":"classic","gradient":""},"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[4,12,1],"tags":[],"class_list":["post-2407","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-class-9","category-science","category-uncategorized"],"jetpack_publicize_connections":[],"_links":{"self":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2407","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/comments?post=2407"}],"version-history":[{"count":1,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2407\/revisions"}],"predecessor-version":[{"id":2660,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2407\/revisions\/2660"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/media\/2659"}],"wp:attachment":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/media?parent=2407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/categories?post=2407"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/tags?post=2407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}