Across
- 3. These waft trapped microbes to the throat to be swallowed.
- 4. Human chemical defence produced by the stomach.
- 5. As all microbes are treated the same way this type of defence is known as non-........-
- 8. Helpful microorganisms in the gut that compete with pathogens.
- 9. Cell fragments that help seal wounds by forming clots.
Down
- 1. A rigid physical defence in plants made of cellulose.
- 2. Sticky substance in the nose and trachea that traps pathogens.
- 3. Waxy outer layer of a leaf that acts as a physical barrier.
- 6. Preventing microbes entering the body is known as the ..... line of defence.
- 7. Enzyme in tears that kills microbes.
- 10. The largest physical barrier covering the whole human body.