NCERT Solutions class 9 Science 5. The Fundamental Unit of Life Chapter Review

Get complete NCERT Solutions for 9 Science 5. The Fundamental Unit of Life with detailed explanations. Easy-to-understand answers to help students study effectively and score better.

NCERT Solutions class 9 Science 5. The Fundamental Unit of Life Chapter Review

NCERT Solutions class 9 Science 5. The Fundamental Unit of Life Chapter Review

Get complete NCERT Solutions for 9 Science 5. The Fundamental Unit of Life with detailed explanations. Easy-to-understand answers to help students study effectively and score better.

9 Science Chapter 5. The Fundamental Unit of Life - Chapter Review

Preparing for exams becomes easier with Chapter Review. Whether you are studying for board exams or mid-term exams, 9 Science Chapter 5. The Fundamental Unit of Life solutions provide quick revising points, well-structured answers, and additional practice material to help you score better.

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5. The Fundamental Unit of Life

Chapter Review


Chapter Review:


  • The fundamental organisational unit of life is called cell.
  • Cells were first discovered by Robert Hooke in 1665.
  • The movement of water molecules through such a selectively permeable membrane is called osmosis.
  • The plasma membrane is flexible and is made up of organic molecules called lipids
    and proteins.
  • Nucleus is a largest cell organelle which consists inside the cell. Nuclei are found in all eukaryotic cells. It contains chromatin. Nucleus is a largest cell organelle which consists inside the cell. Nuclei are found in all eukaryotic cells. It contains chromatin. 
  • Cellulose is a complex substance and provides structural strength to plants.
  • The nucleus has a double layered covering called nuclear membrane.
  • Functional segments of DNA are called genes.
  • Mitochondria are known as the powerhouses of the cell.
  • ATP is known as the energy currency of the cell.
  • The internal organisation of the plastids consists of numerous membrane layers embedded in a material called the stroma.
  • Most plant cells have large membranous organelles called plastids, which are of two types – chromoplasts and leucoplasts.
  • Chromoplasts that contain chlorophyll are called chloroplasts and they perform photosynthesis.
  • Most mature plant cells have a large central vacuole that helps to maintain the turgidity of the cell and stores important substances including wastes.
  • If the medium surrounding the cell has a higher water concentration than the cell is known as hypotonic solution.
  • If the medium has exactly same water concentration than the cell is known as isotonic solution.
  • If the medium surrounding the cell has a lower concentration then the cell is known as hypertonic solution.
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📘 Why Chapter Review are Important?

Chapter Review are created by experts to give step-by-step explanations. Around 60–70% of exam questions are based on NCERT concepts. Our 9 Science Chapter 5. The Fundamental Unit of Life solutions help you understand the core concepts and practice effectively.

✍️ Quick Revising Points as Notes in Page-1

Revision is the key to exam success. Our notes for 9 Science highlight important formulas, key definitions, and exam-ready points from Chapter 5. The Fundamental Unit of Life. These quick revision notes make last-minute preparation easy.

📚 NCERT Exercise Solutions

Every NCERT chapter ends with exercises, and solving them is crucial. Our Chapter Review include complete solutions for 9 Science Chapter 5. The Fundamental Unit of Life exercises. With step-by-step answers, you gain clarity and confidence to attempt similar exam questions.

📝 Additional Important Questions & Answers

To boost your preparation, we also provide additional important questions with answers. These are prepared from previous year board papers, sample papers, and important concepts of Chapter 5. The Fundamental Unit of Life. Practicing these ensures you are well-prepared for both board and mid-term exams.

🎯 Useful for Board & Mid-Term Exams

Our Chapter Review are useful for both board exams and mid-term exams. For 9 Science, we provide notes, exercises, and important Q&A so that you can revise smartly and write perfect answers in exams.

🌟 Final Words

In short, Chapter Review for 9 Science Chapter 5. The Fundamental Unit of Life are a complete study package. With quick revising points, NCERT exercises, and additional important questions, you can prepare effectively for exams. Make these solutions your study companion and excel in your academic journey.

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