EduKing BD

Academic · Class 9

Biology

Learn every chapter of the book by seeing it — the living world in real photos, 3D models and animation, explained in plain Bangla. Understand it, don't memorise it.

What you get

  • Every textbook chapter, each section its own lesson
  • Explained step by step in plain Bangla, like a tutor
  • See the living world in real photos and micrographs
  • Turn 3D models with your finger and see them from every side
  • Questions mid-lesson and a quiz at the end, checked instantly
  • Watch on phone or computer, from anywhere
  • 14 chapters
  • 91 lessons
  • Free demo lessons
  • Follows the textbook
See the chapters

What the lessons are like

Not videos — science happening in front of you

Every Biology lesson is built from real photos, 3D models you can turn and animation. The inside of a cell, the shape of a microbe, the bodies of plants and animals — you see it all, while a voice explains it in plain Bangla.

  • Seen in photos and 3DReal photos, micrographs and 3D models you turn with a finger — understand it instead of memorising it.
  • Bangla voice-overStep-by-step explanations in Bangla — hard words made simple.
  • At your own pacePause, go back, watch again. It remembers where you stopped.
  • Works on a phoneNo app needed — lessons run in the browser on a phone or computer.
  • Quizzes as you learnAs soon as a topic ends, a question pops up right on the lesson screen — answer it, see instantly if you're right, then move on to the next topic.

Contents

The whole book, chapter by chapter

Every chapter of the Class 9 Biology textbook, in the book's own order. Chapters still being made say “coming soon” and fill in as their lessons are added.

  1. Chapter 1Lessons on Life7 lessons · 24 minFree demo inside
    1. The chapter at a glanceInteractive lesson · 0:54 minFree demo
    2. 1.1 Concept of BiologyInteractive lesson · 2:21 min
    3. 1.2 Branches of BiologyInteractive lesson · 4:08 min
    4. 1.3 Classification of OrganismsInteractive lesson · 6:17 min
    5. 1.4 Levels of ClassificationInteractive lesson · 2:58 min
    6. 1.5 Binomial NomenclatureInteractive lesson · 4:40 min
    7. Chapter 1: Practice Questions and SolutionsInteractive lesson · 2:24 min
  2. Chapter 2Cell and Tissue7 lessons · 53 minFree demo inside
    1. The chapter at a glanceInteractive lesson · 0:52 minFree demo
    2. 2.1 The CellInteractive lesson · 3:17 min
    3. 2.2 Main Organelles of Plant and Animal Cells and Their WorkInteractive lesson · 13:58 min
    4. 2.3 The Role of Different Cells in the Work of Plants and AnimalsInteractive lesson · 18:57 min
    5. 2.4 Organs and SystemsInteractive lesson · 4:49 min
    6. 2.5 The MicroscopeInteractive lesson · 8:46 min
    7. Chapter 2: Practice Questions and SolutionsInteractive lesson · 2:39 min
  3. Chapter 3Cell Division5 lessons · 19 minFree demo inside
    1. The chapter at a glanceInteractive lesson · 0:47 minFree demo
    2. 3.1 Cell Division and its TypesInteractive lesson · 2:04 min
    3. 3.2 MitosisInteractive lesson · 8:32 min
    4. 3.3 MeiosisInteractive lesson · 4:45 min
    5. Chapter 3: Practice Questions and SolutionsInteractive lesson · 2:37 min
  4. Chapter 4Bioenergetics5 lessons · 35 minFree demo inside
    1. The chapter at a glanceInteractive lesson · 0:53 minFree demo
    2. 4.1 Bioenergy and the Role of ATPInteractive lesson · 3:53 min
    3. 4.2 PhotosynthesisInteractive lesson · 15:40 min
    4. 4.3 RespirationInteractive lesson · 12:01 min
    5. Chapter 4: Practice Questions and SolutionsInteractive lesson · 2:56 min
  5. Chapter 5Food, Nutrition and Digestion11 lessons · 73 minFree demo inside
    1. The chapter at a glanceInteractive lesson · 0:46 minFree demo
    2. 5.1 Plant Mineral NutritionInteractive lesson · 8:24 min
    3. 5.2 Food and Nutrition of AnimalsInteractive lesson · 14:00 min
    4. 5.3 Nutritional Deficiency DiseasesInteractive lesson · 5:59 min
    5. 5.4 Energy in NutrientsInteractive lesson · 5:06 min
    6. 5.5 BMR and BMIInteractive lesson · 5:49 min
    7. 5.6 Exercise and RestInteractive lesson · 1:54 min
    8. 5.7 Chemicals in Food PreservationInteractive lesson · 4:45 min
    9. 5.8 DigestionInteractive lesson · 14:24 min
    10. 5.9 Intestinal ProblemsInteractive lesson · 8:37 min
    11. Chapter 5: Practice Questions and SolutionsInteractive lesson · 3:01 min
  6. Chapter 6Transport in Organisms7 lessons · 43 minFree demo inside
    1. The chapter at a glanceInteractive lesson · 0:47 minFree demo
    2. 6.1 Plants and WaterInteractive lesson · 4:25 min
    3. 6.2 Absorption of Water and Mineral SaltsInteractive lesson · 8:21 min
    4. 6.3 Blood Circulation in the Human BodyInteractive lesson · 11:30 min
    5. 6.4 Structure and Work of the HeartInteractive lesson · 12:10 min
    6. 6.5 Some Diseases of the Circulatory SystemInteractive lesson · 3:29 min
    7. Chapter 6: Practice Questions and SolutionsInteractive lesson · 2:38 min
  7. Chapter 7Gaseous Exchange5 lessons · 27 minFree demo inside
    1. The chapter at a glanceInteractive lesson · 0:41 minFree demo
    2. 7.1 Gaseous Exchange in PlantsInteractive lesson · 2:36 min
    3. 7.2 The Human Respiratory SystemInteractive lesson · 11:06 min
    4. 7.3 Diseases of the Respiratory TractInteractive lesson · 9:29 min
    5. Chapter 7: Practice Questions and SolutionsInteractive lesson · 2:56 min
  8. Chapter 8Excretion5 lessons · 22 minFree demo inside
    1. The chapter at a glanceInteractive lesson · 0:57 minFree demo
    2. 8.1 ExcretionInteractive lesson · 2:55 min
    3. 8.2 The KidneyInteractive lesson · 8:56 min
    4. 8.3 Kidney Failure, Dialysis and TransplantInteractive lesson · 5:52 min
    5. Chapter 8: Practice Questions and SolutionsInteractive lesson · 3:01 min
  9. Chapter 9Support and Movement5 lessons · 27 minFree demo inside
    1. The chapter at a glanceInteractive lesson · 1:09 minFree demo
    2. 9.1 The Human SkeletonInteractive lesson · 11:34 min
    3. 9.2 MusclesInteractive lesson · 6:10 min
    4. 9.3 Bone DiseasesInteractive lesson · 4:54 min
    5. Chapter 9: Practice Questions and SolutionsInteractive lesson · 3:19 min
  10. Chapter 10Co-ordination9 lessons · 53 minFree demo inside
    1. The chapter at a glanceInteractive lesson · 1:34 minFree demo
    2. 10.1 Co-ordination in PlantsInteractive lesson · 10:09 min
    3. 10.2 Co-ordination in AnimalsInteractive lesson · 4:35 min
    4. 10.3 The Nervous SystemInteractive lesson · 12:44 min
    5. 10.4 HormonesInteractive lesson · 4:08 min
    6. 10.5 Hormone DisordersInteractive lesson · 7:43 min
    7. 10.6 Disorders of the Nervous SystemInteractive lesson · 4:08 min
    8. 10.7 Tobacco and DrugsInteractive lesson · 4:17 min
    9. Chapter 10: Practice Questions and SolutionsInteractive lesson · 3:31 min
  11. Chapter 11Reproduction6 lessons · 44 minFree demo inside
    1. The chapter at a glanceInteractive lesson · 1:03 minFree demo
    2. 11.1 Reproduction: Idea and ImportanceInteractive lesson · 4:44 min
    3. 11.2 Reproduction in PlantsInteractive lesson · 15:46 min
    4. 11.3 Reproduction in AnimalsInteractive lesson · 13:06 min
    5. 11.4 Diseases of ReproductionInteractive lesson · 6:10 min
    6. Chapter 11: Practice Questions and SolutionsInteractive lesson · 2:43 min
  12. Chapter 12Heredity and Evolution6 lessons · 51 minFree demo inside
    1. The chapter at a glanceInteractive lesson · 1:02 minFree demo
    2. 12.1 HeredityInteractive lesson · 17:25 min
    3. 12.2 Sex Determination in HumansInteractive lesson · 4:02 min
    4. 12.3 Genetic DisordersInteractive lesson · 7:35 min
    5. 12.4 The Theory of EvolutionInteractive lesson · 17:42 min
    6. Chapter 12: Practice Questions and SolutionsInteractive lesson · 3:11 min
  13. Chapter 13Environment of Organisms8 lessons · 43 minFree demo inside
    1. The chapter at a glanceInteractive lesson · 1:14 minFree demo
    2. 13.1 EcosystemInteractive lesson · 7:25 min
    3. 13.2 Ecosystem of a PondInteractive lesson · 3:37 min
    4. 13.3 Food ChainInteractive lesson · 3:17 min
    5. 13.4 Food WebInteractive lesson · 7:52 min
    6. 13.5 BiodiversityInteractive lesson · 11:21 min
    7. 13.6 Conserving Biodiversity and the EnvironmentInteractive lesson · 5:58 min
    8. Chapter 13: Practice Questions and SolutionsInteractive lesson · 2:26 min
  14. Chapter 14Biotechnology5 lessons · 28 minFree demo inside
    1. The chapter at a glanceInteractive lesson · 0:53 minFree demo
    2. 14.1 BiotechnologyInteractive lesson · 4:13 min
    3. 14.2 Tissue CultureInteractive lesson · 8:33 min
    4. 14.3 Genetic EngineeringInteractive lesson · 10:50 min
    5. Chapter 14: Practice Questions and SolutionsInteractive lesson · 3:15 min

Questions

What you'll want to know first

More questions
Are the lessons videos?

No. The Biology lessons are interactive, built with animation and a Bangla voice-over. They open in the browser on a phone or computer.

Can I try before enrolling?

Yes. Lessons marked “free demo” are open to everyone — no login needed.

Does it follow the syllabus?

Yes. The lessons follow the chapters of the Class 9 Biology textbook, in the book's order.

How do I pay?

Send Money with bKash, Nagad or Rocket and submit the transaction ID (TrxID). Once we verify it, every lesson opens.

How long can I watch the lessons?

The enrol box shows how long access lasts. Within that time, watch as often as you like.