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Twenty Interesting IB Biology Extended Essay Topics


An extended essay involves great research, dedication, critical thinking and experimentation to be able to test and prove your stance. You need to think of an existing theory or come up with one and find relevant data to prove it.

Choosing a valid topic for your extended assignment in biology can be challenging because you need to base your paper on this. If you choose a topic on human diseases and their behaviors, it will be hard for you to experiment your thoughts and ideas. You are a student with no access or liberty to perform experiments and neither have the necessary resources to do so. Similarly, topics that involve killing of animals to practice your ideas are a fail. You need to think of something that is easily researchable and where you can perform experimentation. The best possible topics will be those that match the requirements from your teacher as well as allow you to perform your experimentation.

When you choose topics for your paper, you need to keep in mind the data you will need to write on such a topic. Finalize that topic for which you can collect data both by primary and secondary research. Below are twenty example topics for an extended essay in biology you can have a good look at them in order to compose your own.

  1. The process of photosynthesis without sunlight
  2. Is it possible for plants to behave differently within the same habitat
  3. What is the effect of change of habitat on touch me not plant
  4. The safety standards for cow milk storage for selling purposes
  5. The potential of pain killer and such drugs on harming the human brain
  6. Why some people eat more and still look skinny
  7. What is the most important thing plants need for growth
  8. How does pollination occur in a remote area
  9. Why plants grow inside water
  10. What is the difference between aquatic and land plants
  11. How is the flower produced
  12. How does pollen tube form
  13. The effect of weather changes on reproduction in plants
  14. The success of cross pollination
  15. How do plants act as a healer
  16. The effect of global warming on plants
  17. The types of eucalyptus
  18. Addictive sugar and cocaine
  19. The relationship between brain and other parts of body
  20. Developmental stages of a fetus

Studying the effect of food additives on the digestive system and the body as a whole



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