Feeding relationships
Download
1 / 33

Feeding Relationships - PowerPoint PPT Presentation


  • 554 Views
  • Updated On :
  • Presentation posted in: Pets / Animals

Feeding Relationships. A food chain shows a simple feeding relationship. Sun → All food chains start with the sun. Feeding Relationships. A food chain shows a simple feeding relationship. Sun → grass →. Feeding Relationships. A food chain shows a simple feeding relationship.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha

Download Presentation

Feeding Relationships

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Feeding Relationships

  • A food chain shows a simple feeding relationship.

    Sun →

  • All food chains start with the sun


Feeding Relationships

  • A food chain shows a simple feeding relationship.

    Sun → grass →


Feeding Relationships

  • A food chain shows a simple feeding relationship.

    Sun → grass → rabbit →


Feeding Relationships

  • A food chain shows a simple feeding relationship.

    Sun → grass → rabbit → fox


All food chains start with ENERGY from the sun


carbon dioxide from the air

energy from

sunlight

(or light)

water from

the roots

food

transported to the

rest of the plant


Photosynthesis

carbon dioxide from the air

energy from

sunlight

(or light)

water from

the roots

food

transported to the

rest of the plant


Because plants produce their own food, they are called ‘Producers’


The energy is then passed on to animals when they eat the plant.


Animals of all shapes…


…and sizes!


Because these animalsare thefirst to takethe food energyfrom the plants,

They are called primaryconsumers


Some of these primary consumers havepredators. Other animals that feed on them


Aphids are eaten by….


Ladybirds


Animals that eat primary consumers are called secondary consumers


  • So far this is a straightforward food chain

  • Sun → aphid → ladybird

    But in reality it is more complicated than that


This bird eats ladybirds and aphids


This bird eats smaller birds, mice, and rabbits


Mice and rabbits have other predators


What will eat the frog?

What do you think the frog eats?


Sometimes it’s not entirely clear who eats who!


We can show what goes on with the help of a Food Web


What would happen if a disease killed off many of the hawks?


There will be nothing to eat the snakes, so their numbers will increase.


All the frogs get eaten


No frogs.

More crickets


Most of the cattail gets eaten by the crickets


Now the crickets don’t have enough food so their numbers go down


..and so on. Numbers of each species have an effect on the numbers of the other species in the web.


  • 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


This powerpoint was kindly donated to www.worldofteaching.com

http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.


ad
  • Login