Seed Dispersal - PowerPoint PPT Presentation

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Seed Dispersal

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  1. Seed Dispersal How do plants spread their seeds?

  2. Seeds Spread by the Wind • Small seeds • “parachute” or “wing-like structure”

  3. Spread by Water • Seeds have thick shell to protect from waves and rocks. • Buoyant so they can float along in river or ocean currents

  4. Seeds Spread by Animals • Small hooks catch on animal fur as they pass by • Seeds are dispersed later as animals lick, bite or rub them off

  5. Seeds Spread by Animals • Deer eat fruit • Seeds are not destroyed as they move through the animal’s digestive system • Seeds are dispersed in the animal’s poop • Squirrels hide nuts each year but for the winter but forget where some are located