The worlds of living organisms, and viruses
Answers are for parents and teachers.
1
Sort these organisms into worlds and give one reason for each: mould, tuberculosis bacillus, pine, snake, nodule bacterium, boletus.
Bacteria: tuberculosis bacillus, nodule bacterium (no formed nucleus); fungi: mould, boletus (made of hyphae, heterotrophic); plants: pine (photosynthesises); animals: snake (moves freely, heterotrophic).
2
Write five organisms you find near your home and decide which world each belongs to.
Free answer; each organism must be placed in the right world.
3
Write the rules that help prevent influenza (at least four).
Wash hands with soap, cover your mouth when coughing, air rooms, avoid close contact with the sick, get vaccinated as doctors advise.
4
Why do we call viruses a “cell-free form of life”? Write 2–3 sentences.
Viruses have no cell structure; they multiply only inside the cells of another organism.