Feeding Relationships A food chain shows a simple feeding relationship. Sun → All food chains...
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Transcript of Feeding Relationships A food chain shows a simple feeding relationship. Sun → All food chains...
![Page 1: Feeding Relationships A food chain shows a simple feeding relationship. Sun → All food chains start with the sun.](https://reader036.fdocuments.us/reader036/viewer/2022062409/5697bfcf1a28abf838caa25c/html5/thumbnails/1.jpg)
Feeding Relationships
• A food chain shows a simple feeding relationship.
Sun →
• All food chains start with the sun
![Page 2: Feeding Relationships A food chain shows a simple feeding relationship. Sun → All food chains start with the sun.](https://reader036.fdocuments.us/reader036/viewer/2022062409/5697bfcf1a28abf838caa25c/html5/thumbnails/2.jpg)
Feeding Relationships
• A food chain shows a simple feeding relationship.
Sun → grass →
![Page 3: Feeding Relationships A food chain shows a simple feeding relationship. Sun → All food chains start with the sun.](https://reader036.fdocuments.us/reader036/viewer/2022062409/5697bfcf1a28abf838caa25c/html5/thumbnails/3.jpg)
Feeding Relationships
• A food chain shows a simple feeding relationship.
Sun → grass → rabbit →
![Page 4: Feeding Relationships A food chain shows a simple feeding relationship. Sun → All food chains start with the sun.](https://reader036.fdocuments.us/reader036/viewer/2022062409/5697bfcf1a28abf838caa25c/html5/thumbnails/4.jpg)
Feeding Relationships
• A food chain shows a simple feeding relationship.
Sun → grass → rabbit → fox
![Page 5: Feeding Relationships A food chain shows a simple feeding relationship. Sun → All food chains start with the sun.](https://reader036.fdocuments.us/reader036/viewer/2022062409/5697bfcf1a28abf838caa25c/html5/thumbnails/5.jpg)
All food chains start with ENERGY from the sun
![Page 6: Feeding Relationships A food chain shows a simple feeding relationship. Sun → All food chains start with the sun.](https://reader036.fdocuments.us/reader036/viewer/2022062409/5697bfcf1a28abf838caa25c/html5/thumbnails/6.jpg)
carbon dioxide from the air
energy from sunlight (or light)
water fromthe roots
foodtransported to therest of the plant
![Page 7: Feeding Relationships A food chain shows a simple feeding relationship. Sun → All food chains start with the sun.](https://reader036.fdocuments.us/reader036/viewer/2022062409/5697bfcf1a28abf838caa25c/html5/thumbnails/7.jpg)
carbon dioxide from the air
energy from sunlight (or light)
water fromthe roots
foodtransported to therest of the plant
Photosynthesis
![Page 8: Feeding Relationships A food chain shows a simple feeding relationship. Sun → All food chains start with the sun.](https://reader036.fdocuments.us/reader036/viewer/2022062409/5697bfcf1a28abf838caa25c/html5/thumbnails/8.jpg)
Because plants produce their own food, they are called ‘Producers’
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The energy is then passed on to animals when they eat the plant.
![Page 10: Feeding Relationships A food chain shows a simple feeding relationship. Sun → All food chains start with the sun.](https://reader036.fdocuments.us/reader036/viewer/2022062409/5697bfcf1a28abf838caa25c/html5/thumbnails/10.jpg)
Animals of all shapes…
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![Page 12: Feeding Relationships A food chain shows a simple feeding relationship. Sun → All food chains start with the sun.](https://reader036.fdocuments.us/reader036/viewer/2022062409/5697bfcf1a28abf838caa25c/html5/thumbnails/12.jpg)
…and sizes!
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Because these animalsare the first to takethe food energyfrom the plants,
They are called primary consumers
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Some of these primary consumers have predators. Other animals that feed on them
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Aphids are eaten by….
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Ladybirds
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Animals that eat primary consumers are called secondary consumers
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• So far this is a straightforward food chain
• Sun → aphid → ladybird
But in reality it is more complicated than that
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This bird eats ladybirds and
aphids
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This bird eats smaller birds, mice, and
rabbits
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Mice and rabbits have other predators
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What will eat the frog?
What do you think the frog
eats?
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Sometimes it’s not entirely clear who
eats who!
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We can show what goes on with the help of a Food Web
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What would happen if a disease killed off many of the hawks?
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There will be nothing to eat the snakes, so their numbers will
increase.
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All the frogs get eaten
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No frogs.
More crickets
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Most of the cattail gets eaten by the
crickets
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Now the crickets don’t have enough
food so their numbers go down
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..and so on. Numbers of each species have an effect on the numbers of the other species in the web.
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• Use the food web worksheet to predict what might happen in the following situations:
• A) There is very little rain and much of the Marsh Grass and Cattail die off.
• B) Humans nearby bring cats into the area.
• C) The frogs eats some poisoned slugs from a garden
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