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SEED DISPERSAL

SEED DISPERSAL. By: Adam, Marcus, Zi Yi, Denise MADZ :D. Different types of seed dispersal. Dispersal by water Dispersal by wind Dispersal by splitting/explosion Dispersal by animals. Dispersal by water. The seeds are encased in a with a fibrous husk

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SEED DISPERSAL

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  1. SEED DISPERSAL By: Adam, Marcus, Zi Yi, Denise MADZ :D

  2. Different types of seed dispersal • Dispersal by water • Dispersal by wind • Dispersal by splitting/explosion • Dispersal by animals

  3. Dispersal by water • The seeds are encased in a with a fibrous husk • The fibrous husk traps air which helps the fruit to float on water as it is light

  4. Dispersal by wind • The seed has a wing-like structures or feathery structures, which are lightweight • The seed’s structure allows it to drift away from it’s parents plant • http://www.youtube.com/watch?v=UYEUoSQXdcE

  5. Dispersal by animals • The seeds can hook onto the fur of passing animals and be carried to other places • The seeds are light and a hook-like structure • Animals would eat the fruits, swallow the seeds and pass them out as droppings

  6. Dispersal by splitting/explosion • Seeds dispersed by splitting often grow in pods • They would split open when ripe • The force would fling the seeds out and scatter them

  7. Quiz time! • 1)How does the coconut disperse it’s seeds? • Ans: It is dispersed by water • 2)List 3 seeds dispersed by wind. • Ans: Angsana, dandelion, African tulip • 3)When will the seeds split open? • Ans: When they are ripe.

  8. Thanks for listening!  • Sources: • www.google.com • www.vtaide.com • www.wikipedia.com • www.youtube.com

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