Sarah GreenSarah GreenEducational Technology 470Educational Technology 470San Diego State UniversitySan Diego State UniversityFall 2008Fall 2008

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 FruitsReview: Kinds of Fruits

Think of different Think of different ways seeds might ways seeds might traveltravel

Turn to a partner and Turn to a partner and share your share your predictionspredictions

Share with the classShare with the class

Let’s find out!Let’s find out!

Seeds have different characteristicsSeeds have different characteristics

These characteristics help seeds travel These characteristics help seeds travel

Seeds travel in many different waysSeeds travel in many different ways

Seeds travel to become planted & growSeeds travel to become planted & grow

Gardeners & farmers plant seeds in the Gardeners & farmers plant seeds in the groundground

These seeds become new plants, trees, & These seeds become new plants, trees, & flowersflowers

People plant fruits & vegetables that we eatPeople plant fruits & vegetables that we eat

You may have planted seeds yourself!You may have planted seeds yourself!

Find Out: The Job of a FarmerFind Out: The Job of a Farmer

Most plants do not rely on peopleMost plants do not rely on people

Animals, wind, and water help seeds Animals, wind, and water help seeds traveltravel

Seeds travel to be planted in new Seeds travel to be planted in new placesplaces

Animals’ fur and feathers help seeds travelAnimals’ fur and feathers help seeds travel

Some seeds are sticky and spiky with hooksSome seeds are sticky and spiky with hooks

They grab on and stick to animalsThey grab on and stick to animals

When the animal travels, the seeds travel When the animal travels, the seeds travel with itwith it

Have seeds ever stuck to your clothes?Have seeds ever stuck to your clothes?

Animals eat fruit, including the seedsAnimals eat fruit, including the seeds

The seeds are not digested The seeds are not digested

When the animals leave waste, it contains the When the animals leave waste, it contains the seedsseeds

These seeds become new plantsThese seeds become new plants

Some animals, like Some animals, like squirrels, bury seeds in squirrels, bury seeds in the groundthe ground

They sometimes forget They sometimes forget about these seedsabout these seeds

The seeds stay in the The seeds stay in the ground and become new ground and become new plantsplants

Some seeds are shaped like Some seeds are shaped like parachutes or helicopters!parachutes or helicopters!

They are light and float in the They are light and float in the windwind

Wind helps the seeds travel Wind helps the seeds travel through the airthrough the air

The seeds land and grow in The seeds land and grow in new placesnew places

Video of Drifting SeedsVideo of Drifting Seeds

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

Flowers must be pollinated to make new seedsFlowers must be pollinated to make new seeds

Pollination is different from other seed dispersalPollination is different from other seed dispersal

Insects are attracted to flowers because of color and Insects are attracted to flowers because of color and smellsmell

Insects land on flowers; pollen sticks to their bodiesInsects land on flowers; pollen sticks to their bodies

They transfer the pollen to new flowersThey transfer the pollen to new flowers

This makes new seeds for the flowersThis makes new seeds for the flowers

Bees carry out more Bees carry out more pollination than any other pollination than any other insect insect

Hummingbirds use nectar Hummingbirds use nectar to help pollinate flowersto help pollinate flowers

Small mammals, like batsSmall mammals, like bats

Other insects, like Other insects, like butterflies and antsbutterflies and ants

An In-Depth Look at An In-Depth Look at PollinationPollination

Traveling seeds land in new placesTraveling seeds land in new placesIf the conditions are right, these plants start to growIf the conditions are right, these plants start to grow

Discuss in small Discuss in small groups.groups.

What might help What might help these seeds travel?these seeds travel?

Why is it important for Why is it important for seeds to be able to travel seeds to be able to travel far?far?

How does environment How does environment play a role in seed play a role in seed dispersal?dispersal?