Seed dispersal
Download as PPT, PDF3 likes4,123 views
The document discusses several methods of seed dispersal used by plants, including acorns sprouting after falling from trees, plants using hooked fruits to attach to fur and feathers and be carried by animals, hard nuts sometimes being buried and forgotten by squirrels, fleshy fruits passing through animal digestive systems, seeds acting like parachutes to be blown by wind, plantlets sending out stems to root elsewhere, maple pods spinning like helicopters to disperse by wind, and coconuts floating long distances in water.
1 of 10
Downloaded 23 times
More Related Content
What's hot (20)
Ad
Viewers also liked (20)
Ad
Similar to Seed dispersal (20)
More from iesbscience (20)
Seed dispersal
- 2. Acorns fall from the tree and sprout • If they are not destroyed by animals, white oak acorns can sprout rapidly after falling from the tree.
- 3. Animal dispersal by hooked fruits • Some species of plant use hooks on their fruits to attach themselves to the fur of mammals or feathers of birds
- 4. Animal burial • Hard nuts are usually destroyed if chewed or eaten. • However, animals such as squirrels may store them to eat later and forget to go back to get them, giving them a chance to germinate. • On rare occasions, birds such as blue jays can transport acorns long distances.
- 5. Soft fruit dispersal • Fleshy fruits • The seeds of many plants are dispersed after passing through the digestive system of animals that have eaten the fleshy fruits.
- 6. Wind dispersal • Some plants, such as the dandelion, have seeds that act as parachutes, which are carried away by the wind
- 7. Plantlet reproduction • Spider plants, amongst others, send out stems which produce plantlets, these baby plants then try to root themselves
- 8. Spinning dispersal • Maple fruits are winged, two- seeded pods. They spin like helicopters as they fall from the tree, providing a longer time for dispersal by wind.
- 9. Dispersal by water • Coconuts can travel hundreds of miles by floating in the sea
- 10. Dispersal by water • Coconuts can travel hundreds of miles by floating in the sea