CBSE - Class 9th - Science - Ch 5 - The Fundamental Unit of Life - Question Bank

In earlier chapters of the book, we are focused on Chemistry syllabus of class 9th. Starting with this post, Let me share you the question bank by getting started with Biology section of Class 9th syllabus.

CBSE - NCERT - Class 9th - Science

Chapter 5 - The Fundamental Unit of Life

• What is a Cell?

• Give 4 Examples of Unicellular Organisms.

• What do you mean by Unicellular and Multi-cellular Organisms. Give example for each type of the organism.

• Draw the Diagrams of various cells from the Human Body
• Smooth Muscle Cell
• Blood Cells
• Nerve Cells
• Ovum
• Bone Cell
• Sperm
• Fat Cell

• Explain the 3 features of a cell
• Plasma Membrane
• Nucleus
• Cytoplasm

• Why is Plasma Membrane called a Selectively Permeable membrane?

• How does Substance like Carbon Dioxide or Oxygen move across the Cell Membrane?

• What is Osmosis?

• What are the various scenarios possible if we put an animal cell or a plant cell into a solution of Sugar or Salt in Water? Describe by explaining the concept of Hypotonic Solution, Isotonic Solution and Hypertonic Solution.

• What is Endocytosis? Who uses this process and for what purpose?

• What is Plasmolysis?

• What are the components inside the nucleus of an atom?

• What is Nucleoid?

• What are Prokaryotes? 

• Give Difference between Prokaryotes and Eukaryotes.

• Describe the structure of a Prokaryotic cell with an example.

• What is Cytoplasm in a Cell?

• Describe the structure and function of following cell organelles:
• Endoplasmic Reticulum
• Golgi Apparatus
• Lysosomes
• Mitochondria
• Plastids
• Vacuoles

• What is Membrane Biogenesis?

• Draw the diagram of Animal Cell & describe each of its components.

• Draw the diagram of plant cell & describe each of its components.

• Why is Lysosomes also known as "Suicide Bags" of a Cell.

• Why is Mitochondria called as the "Powerhouse of the Cell". How is it associated with ATP?

• How is Mitochondria able to make some of its own proteins?

• What are the 2 types of Plastids? Describe each.

• Give the difference between the two types of Cell Division - Mitosis and Meiosis. Describe with diagrams.

Hope the above questions would help you revise your textbook contents well. If you are looking for solutions to the above questions, do let me know by commenting below.