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SEED DISPERSAL

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Presentation on seeds and their dispersal for Primary and Middle School kids

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SEED DISPERSAL

  1. 1. SEED DISPERSAL - Traveling to survive
  2. 2. SOME ARE
  3. 3. DREAMING OF WIND COTTON
  4. 4. MAPLE
  5. 5. SPIRALLING ITS WAY DOWN…
  6. 6. DANDELION
  7. 7. ON FEATHERY WINGS…..
  8. 8. A PARACHUTE RAGWORT Feathery hairs help the seed to float on the wind.
  9. 9. WINGED SPINNERS SYCAMORE Wing-like outgrowths make it spin as it falls from the parent plant. This spinning delays its fall so that the wind may carry it some distance away.
  10. 10. AND SOME ARE
  11. 11. FLOATING AWAY COCONUT
  12. 12. ON A LONG VOYAGE……… .........TO ANOTHER SHORE
  13. 13. POND IRIS The seed pods break open when they ripen. Those which fall into the water float away.
  14. 14. LOTUS SEED
  15. 16. WAITING FOR A FREE RIDE - SPEAR GRASS
  16. 17. XANTHIUM THE SPINY BEAUTY
  17. 18. DEVIL’S CLAW
  18. 19. BURDOCK
  19. 20. BURR
  20. 21. OFFERING THEMSELVES TO ANIMALS BERRIES They are eaten by birds, mice, deer and even foxes. The seeds are expelled in the droppings of the animal .
  21. 23. EXPLOSIVE DISPERSAL PEAS They produce seed pods which dry in the sun and explode
  22. 24. RUPTURED SEED PODS
  23. 25. THE 'PEPPER-POT ' RED CAMPION The containers are shaken by the wind, scattering the seeds through the openings
  24. 26. GORSE FIRING LIKE A GUN
  25. 27. BALSAM
  26. 28. STAGES OF GERMINATION
  27. 31. THANKS

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