Anatomy, physiology, and morphology

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Across
  1. 5. Tissue that consists of dead xylem
  2. 6. Tissue that consists of living xylem
  3. 7. Plant cell walls contain this compound for flexibility
  4. 9. Pores found on the underside of leaves
  5. 11. Bud at the tip of a stem that determines upward growth
  6. 13. The science of dating tree rings
  7. 14. The point where trees shed branches
  8. 15. Tissue that transports water and sugars across the stem
  9. 18. Plant cell walls contain this compound for strength
  10. 19. Activated in times of stress
Down
  1. 1. Bud found where the leaf joins the stem
  2. 2. The process by which plants lose water vapour from leaves
  3. 3. Type of tree with a single, central leader
  4. 4. Plants that don't recover after fire or heavy pruning
  5. 8. Area between two nodes on a stem
  6. 10. The area of raised tissue between a branch and the stem
  7. 12. Type of tree habit with a domed form and multiple scaffold branches
  8. 16. Tissue responsible for cell division which leads to secondary growth
  9. 17. The swollen area at the base of a branch