Food Chain

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Presentation Transcript

FOOD CHAIN : 

FOOD CHAIN July 18, 2008

Slide 2: 

All living things need food!

…and PLANTS : 

…and PLANTS BUT WHERE DO PLANTS GET THEIR FOOD?

Slide 4: 

plants can make or produce their own food

Slide 5: 

HOW?

Slide 6: 

plants make their own food through a process known as . . . PHOTOSYNTHESIS

Slide 7: 

For PHOTOSYNTHESIS to occur some things are needed. . .

Slide 8: 

SUNLIGHT CARBON DIOXIDE WATER

Slide 9: 

The sun (light energy), water, minerals and carbon dioxide are all absorbed by the plant. The plant then uses them to make glucose/sugar, which is the energy/food for the plant. Oxygen is also produced by the plant in this cycle, which is then let off into the air Have you noticed how clean and pure the air feels when there are plants around? They are filling the air with oxygen.

Slide 11: 

Animals cannot make their own food . . . . . . they have to eat plants . . . and other animals

Slide 12: 

So what is a food chain? A food chain shows how plants are eaten by animals and animals are eaten by other animals.

Slide 13: 

FOOD CHAIN shows how each living thing . . . gets food . . . how nutrients and energy are passed from creature to creature FOOD CHAINS begin with plant-life and end with animal-life.

Slide 14: 

Your Text Here Do you know the PARTS of a FOOD CHAIN?

Slide 15: 

The first one is PRODUCER. PLANTS are PRODUCERS. This is because they produce their own food in the form of glucose or sugar through the process of photosynthesis that was explained in the first part of this discussion..

FOOD CHAIN : 

FOOD CHAIN All plants are PRODUCERS. A food chain starts with a plant.

Slide 17: 

The second part are the“CONSUMERS” Animals are called consumers. This is because they cannot make their own food, so they need to consume (eat) plants and/or animals.

Slide 18: 

There are three types of consumers: Animals that eat only plants.. Animals that eat only animals.. Animals that eat both plants and animals…

Slide 22: 

What kind of consumer am I?

Slide 23: 

The last part of a food chain are the “DECOMPOSERS”. . . When I die, these organisms will feast on my flesh as if there is no more tomorrow. . .

Fungi and bacteria play an important role in nature. They break down the unused dead material and turn them into nutrients in the soil, which plants use to grow. They are an important part of the food chain. : 

Fungi and bacteria play an important role in nature. They break down the unused dead material and turn them into nutrients in the soil, which plants use to grow. They are an important part of the food chain.

Slide 25: 

Do you want to see an example of food chain?

Slide 26: 

Simple food chain could start with grass, which is eaten by rabbits. Then the rabbits are eaten by foxes.

Bigger Food Chains : 

Bigger Food Chains Here's another food chain, with a few more animals. It starts with acorns, which are eaten by mice. The mice are eaten by snakes, and then finally the snakes are eaten by hawks. At each link in the chain, energy is being transferred from one animal to another.

Slide 28: 

There can be even more links to any food chain. Here another animal is added. It goes… Grass to grasshopper to mouse to snake to hawk. There is actually even more to this chain…

Slide 29: 

CAN YOU EXPLAIN THIS PICTURE?

There is actually even more to this chain. After a hawk dies, fungi (like mushrooms) and other decomposers break down the dead hawk, and turn the remains of the hawk into nutrients, which are released into the soil. The nutrients (plus sun and water) then cause the grass to grow.It's a full circle of life and energy!! : 

There is actually even more to this chain. After a hawk dies, fungi (like mushrooms) and other decomposers break down the dead hawk, and turn the remains of the hawk into nutrients, which are released into the soil. The nutrients (plus sun and water) then cause the grass to grow.It's a full circle of life and energy!!

FOOD CHAIN in WATER : 

WE call that FOOD CHAIN.. FOOD CHAIN in WATER

Slide 33: 

The plant grows using energy from the sun . ….. then

Slide 34: 

The plant is eaten by pond snails. …. then

Slide 35: 

The plants and the pond snails are eaten by fish… …. then

Slide 36: 

The fish are eaten by birds.

And decomposed by.. : 

And decomposed by.. Bacteria and fungi

Slide 38: 

THERES STILL MORE…..

…ON LAND : 

…ON LAND Plants grow using energy from the sun. … THEN

Slide 40: 

The plants die down in the Autumn. … then

Slide 41: 

They are decomposed by the weather and bacteria ….then

Slide 42: 

The decayed plants in the soil provide a home and food for worms

Slide 43: 

The worms are eaten by birds… .. then

Slide 44: 

The small birds are eaten by the eagle.. … then

And the decomposers again.. : 

And the decomposers again..

Slide 46: 

THE END!!