Immune responses in plants

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Across
  1. 5. Natural insecticide used by humans
  2. 6. Thick outer layer on the stems and branches of woody plants that acts as physical barrier
  3. 8. Large organelle in plant cells filled with fluid
  4. 10. Plants do this to prevent pathogens spreading
  5. 11. Bitter tasting alkaloid found in coffee
  6. 12. Fragrant smelling molecules such as menthol that repel insects and inhibit the growth of microorganisms
Down
  1. 1. Small proteins that disrupt the cell membrane or envelope of pathogens
  2. 2. Pore that allows the exchange of gases on the leaves of plants
  3. 3. Waxy barrier that covers the epidermis of the leaf
  4. 4. Polysaccharide that forms between the plant cell membrane and the cell wall to prevent the entry of invading pathogens
  5. 7. Molecules that have soapy properties when mixed with water
  6. 9. Thick, water-repelling liquid that dries in air and prevents the entry of pathogens