Biome can be defined as:
A large area characterised by its vegetation, soil, climate, and wildlife
A biome is a large ecological area characterized by its distinct climate, soil, flora, and fauna. Examples include forests, deserts, tundras, and grasslands. The term does not refer to a restricted area or exclusively aquatic environments, making option 2 the correct choice.
| List-I (Terms) | List-II (Explanations) |
| A. Biohazards | I. Single celled living organism |
| B. Bacteria | II. Most lethal ultra microscopic inert infectious agents |
| C. Viruses | III. Organisms which live in or on another living organisms |
| D. Parasites | IV. Hazards related to disease in plants, animals and humans |