Plant Disease Questions

   1. Give an example of a physical barrier on a plant against infections 

   2. Give an example of a chemical barrier on a plant against infections

   3. True or false? Mineral ions and water are absorbed through the roots of a plant 

   4. What type of pathogen is Chalara ash dieback?

   5. True or false? nettles have evolved stings to prevent their leaves from being eaten

   6. State whether thorns on a rose bush is a chemical or physical defence?

   7. A shortage of magnesium mineral ions to a plant will result in...?

   8. Define a pathogen  

   9. True or false? The tobacco mosaic virus infects the ribosomes

   10. Foxgloves produce a toxic poison, is this a chemical or physical defence?