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Sarah Green Educational Technology 470 San Diego State University Fall 2008.

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Presentation on theme: "Sarah Green Educational Technology 470 San Diego State University Fall 2008."— Presentation transcript:

1 Sarah Green Educational Technology 470 San Diego State University Fall 2008

2 Seeds are found inside flowers & fruits. Seeds are found inside flowers & fruits. New plants are inside of seeds. New plants are inside of seeds. Seeds are planted & new plants grow. Seeds are planted & new plants grow. Review: Kinds of Fruits Review: Kinds of Fruits Review: Kinds of Fruits Review: Kinds of Fruits

3 Think of different ways seeds might travel Think of different ways seeds might travel Turn to a partner and share your predictions Turn to a partner and share your predictions Share with the class Share with the class Let’s find out! Let’s find out!

4 Seeds have different characteristics Seeds have different characteristics These characteristics help seeds travel These characteristics help seeds travel Seeds travel in many different ways Seeds travel in many different ways Seeds travel to become planted & grow Seeds travel to become planted & grow

5 Gardeners & farmers plant seeds in the ground Gardeners & farmers plant seeds in the ground These seeds become new plants, trees, & flowers These seeds become new plants, trees, & flowers People plant fruits & vegetables that we eat People plant fruits & vegetables that we eat You may have planted seeds yourself! You may have planted seeds yourself! Find Out: The Job of a Farmer Find Out: The Job of a Farmer Find Out: The Job of a Farmer Find Out: The Job of a Farmer

6 Most plants do not rely on people Most plants do not rely on people Animals, wind, and water help seeds travel Animals, wind, and water help seeds travel Seeds travel to be planted in new places Seeds travel to be planted in new places

7 Animals’ fur and feathers help seeds travel Animals’ fur and feathers help seeds travel Some seeds are sticky and spiky with hooks Some seeds are sticky and spiky with hooks They grab on and stick to animals They grab on and stick to animals When the animal travels, the seeds travel with it When the animal travels, the seeds travel with it Have seeds ever stuck to your clothes? Have seeds ever stuck to your clothes?

8 Animals eat fruit, including the seeds Animals eat fruit, including the seeds The seeds are not digested The seeds are not digested When the animals leave waste, it contains the seeds When the animals leave waste, it contains the seeds These seeds become new plants These seeds become new plants

9 Some animals, like squirrels, bury seeds in the ground Some animals, like squirrels, bury seeds in the ground They sometimes forget about these seeds They sometimes forget about these seeds The seeds stay in the ground and become new plants The seeds stay in the ground and become new plants

10 Some seeds are shaped like parachutes or helicopters! Some seeds are shaped like parachutes or helicopters! They are light and float in the wind They are light and float in the wind Wind helps the seeds travel through the air Wind helps the seeds travel through the air The seeds land and grow in new places The seeds land and grow in new places Video of Drifting Seeds Video of Drifting Seeds Video of Drifting Seeds Video of Drifting Seeds

11 Some seeds float on water! Some seeds float on water! Water dispersal is important for plants that live near water Water dispersal is important for plants that live near water Pockets of air allow them to float Pockets of air allow them to float Seeds are washed up to the shore Seeds are washed up to the shore They will begin to grow if conditions are right They will begin to grow if conditions are right Floating seeds Floating seeds Floating seeds Floating seeds

12 Flowers must be pollinated to make new seeds Flowers must be pollinated to make new seeds Pollination is different from other seed dispersal Pollination is different from other seed dispersal Insects are attracted to flowers because of color and smell Insects are attracted to flowers because of color and smell Insects land on flowers; pollen sticks to their bodies Insects land on flowers; pollen sticks to their bodies They transfer the pollen to new flowers They transfer the pollen to new flowers This makes new seeds for the flowers This makes new seeds for the flowers

13 Bees carry out more pollination than any other insect Bees carry out more pollination than any other insect Hummingbirds use nectar to help pollinate flowers Hummingbirds use nectar to help pollinate flowers Small mammals, like bats Small mammals, like bats Other insects, like butterflies and ants Other insects, like butterflies and ants An In-Depth Look at Pollination An In-Depth Look at Pollination An In-Depth Look at Pollination An In-Depth Look at Pollination

14 Traveling seeds land in new places If the conditions are right, these plants start to grow

15 Discuss in small groups. What might help these seeds travel?

16 Why is it important for seeds to be able to travel far? Why is it important for seeds to be able to travel far? How does environment play a role in seed dispersal? How does environment play a role in seed dispersal?


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