Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

How Seeds Travel

By Sara Green

  • Be the first to comment

How Seeds Travel

  1. 1. Sarah Green Educational Technology 470 San Diego State University Fall 2008
  2. 2. <ul><li>Seeds are found inside flowers & fruits. </li></ul><ul><li>New plants are inside of seeds. </li></ul><ul><li>Seeds are planted & new plants grow. </li></ul><ul><li>Review: Kinds of Fruits </li></ul>
  3. 3. <ul><li>Think of different ways seeds might travel </li></ul><ul><li>Turn to a partner and share your predictions </li></ul><ul><li>Share with the class </li></ul><ul><li>Let’s find out! </li></ul>
  4. 4. <ul><li>Seeds have different characteristics </li></ul><ul><li>These characteristics help seeds travel </li></ul><ul><li>Seeds travel in many different ways </li></ul><ul><li>Seeds travel to become planted & grow </li></ul>
  5. 5. <ul><li>Gardeners & farmers plant seeds in the ground </li></ul><ul><li>These seeds become new plants, trees, & flowers </li></ul><ul><li>People plant fruits & vegetables that we eat </li></ul><ul><li>You may have planted seeds yourself! </li></ul><ul><li>Find Out: The Job of a Farmer </li></ul>
  6. 6. <ul><li>Most plants do not rely on people </li></ul><ul><li>Animals, wind, and water help seeds travel </li></ul><ul><li>Seeds travel to be planted in new places </li></ul>
  7. 7. <ul><li>Animals’ fur and feathers help seeds travel </li></ul><ul><li>Some seeds are sticky and spiky with hooks </li></ul><ul><li>They grab on and stick to animals </li></ul><ul><li>When the animal travels, the seeds travel with it </li></ul><ul><li>Have seeds ever stuck to your clothes? </li></ul>
  8. 8. <ul><li>Animals eat fruit, including the seeds </li></ul><ul><li>The seeds are not digested </li></ul><ul><li>When the animals leave waste, it contains the seeds </li></ul><ul><li>These seeds become new plants </li></ul>
  9. 9. <ul><li>Some animals, like squirrels, bury seeds in the ground </li></ul><ul><li>They sometimes forget about these seeds </li></ul><ul><li>The seeds stay in the ground and become new plants </li></ul>
  10. 10. <ul><li>Some seeds are shaped like parachutes or helicopters! </li></ul><ul><li>They are light and float in the wind </li></ul><ul><li>Wind helps the seeds travel through the air </li></ul><ul><li>The seeds land and grow in new places </li></ul><ul><li>Video of Drifting Seeds </li></ul>
  11. 11. <ul><li>Some seeds float on water! </li></ul><ul><li>Water dispersal is important for plants that live near water </li></ul><ul><li>Pockets of air allow them to float </li></ul><ul><li>Seeds are washed up to the shore </li></ul><ul><li>They will begin to grow if conditions are right </li></ul><ul><li>Floating seeds </li></ul>
  12. 12. <ul><li>Flowers must be pollinated to make new seeds </li></ul><ul><li>Pollination is different from other seed dispersal </li></ul><ul><li>Insects are attracted to flowers because of color and smell </li></ul><ul><li>Insects land on flowers; pollen sticks to their bodies </li></ul><ul><li>They transfer the pollen to new flowers </li></ul><ul><li>This makes new seeds for the flowers </li></ul>
  13. 13. <ul><li>Bees carry out more pollination than any other insect </li></ul><ul><li>Hummingbirds use nectar to help pollinate flowers </li></ul><ul><li>Small mammals, like bats </li></ul><ul><li>Other insects, like butterflies and ants </li></ul><ul><li>An In-Depth Look at Pollination </li></ul>
  14. 14. <ul><li>Traveling seeds land in new places </li></ul><ul><li>If the conditions are right, these plants start to grow </li></ul>
  15. 15. <ul><li>Discuss in small groups. </li></ul><ul><li>What might help these seeds travel? </li></ul>
  16. 16. <ul><li>Why is it important for seeds to be able to travel far? </li></ul><ul><li>How does environment play a role in seed dispersal? </li></ul>