Odia Medium Class 8 Science Chapter 2 Question Answer (2026-27)

Odisha Board Class 8 Science Chapter 2 Question Answer (“ଅଣୁଜୀବ ଜଗତ” / The Invisible Living World: Beyond Our Naked Eye). These Question Answer, updated for 2026-27, Which help you score higher in your Class 8 board exams.

Odia Medium Class 8 Science Chapter 2 Question & Answer: The Invisible Living World: Beyond Our Naked Eye (2026-27)

Odia Medium Class 8 Science Chapter 2 Question Answer

Odisha Board Class 8 Science Chapter 2 Question Answer

1. Understanding Microorganisms 

Microorganisms are tiny organisms that cannot be seen with the naked eye. They are classified into four major groups:

  • Bacteria 

  • Fungi

  • Protozoa 

  • Algae 

  • Note: Viruses  are also considered microscopic but reproduce only inside host cells.

2. Beneficial Microorganisms: Our Friends 

Microorganisms play a crucial role in our daily lives and the environment:

  • Food Production: Lactobaccilus bacteria help in the formation of curd from milk.

  • Agriculture: Rhizobium bacteria fix atmospheric nitrogen in the soil, increasing soil fertility.

  • Medicine: Fungi and bacteria are used to produce Antibiotics (like Penicillin) and Vaccines.

  • Environment: They act as decomposers, breaking down organic waste and maintaining the ecological balance.

3. Harmful Microorganisms: Our Foes 

While many are helpful, some microorganisms cause diseases in humans, plants, and animals:

  • Pathogens: Disease-causing microorganisms are called pathogens.

  • Communicable Diseases: Diseases like Cholera, Common Cold, and Tuberculosis spread through air, water, or physical contact.

  • Food Poisoning: Certain bacteria and fungi produce toxic substances in stored food, making it unfit for consumption.

4. Download Class 8 Science Chapter 2 Question Answer

We offer a FREE PDF Download of the Class 8 Science Chapter 2 notes and exercise-wise solutions. This  PDF is optimized for Odia Medium students.

Revision Tip: Use our PDF to practice drawing diagrams of Amoeba, Paramecium, and Bread Mould, as these are frequently asked in the BSE Odisha Summative Assessments (SA1 & SA2)