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8 d ecological relationships (boardworks)

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8 d ecological relationships (boardworks)

  1. 1. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 20051 of 25 KS3 Biology 8D Ecological Relationships
  2. 2. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 20052 of 25 8D Ecological Relationships Contents Classifying animals and plants Habitats and adaptations Summary activities Feeding types Food chains and populations
  3. 3. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 20053 of 25 Animal classification
  4. 4. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 20054 of 25 Vertebrate classification
  5. 5. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 20055 of 25 Invertebrate classification
  6. 6. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 20056 of 25 Which type of invertebrate?
  7. 7. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 20057 of 25 Plant classification
  8. 8. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 20058 of 25 8D Ecological Relationships Contents Classifying animals and plants Habitats and adaptations Summary activities Feeding types Food chains and populations
  9. 9. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 20059 of 25 Which habitat?
  10. 10. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200510 of 25 Organisms need to have special features which help them to survive in their habitat. These special features are called adaptations. For example, you have plenty of adaptations to survive in your habitat. Your fingers are an excellent adaptation. Without their ability to grip you would not be able to do all of that schoolwork! Some adaptations are obvious while others are not so obvious. Can you think of any other adaptations that you have? Surviving in a habitat
  11. 11. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200511 of 25 Adaptations activity
  12. 12. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200512 of 25 8D Ecological Relationships Contents Classifying animals and plants Habitats and adaptations Summary activities Feeding types Food chains and populations
  13. 13. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200513 of 25 Feeding types Animals can be grouped in several ways. One way of doing this is based on how animals feed. Consumers cannot make their own food. They must consume other organisms to get the food that they need. Some organisms are producers. Producers make their own food. Plants produce their own food using light energy from the Sun. Some types of bacteria can also make their own food by using light or chemical reactions.
  14. 14. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200514 of 25 Producer or consumer?
  15. 15. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200515 of 25 Consumers Consumers can be grouped into different types: Carnivores These consumers eat other consumers. They eat animals. Herbivores These consumers eat producers. This means plants and possibly bacteria. Omnivores These consumers eat other consumers and producers. They eat animals and plants. Most humans are omnivores.
  16. 16. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200516 of 25 8D Ecological Relationships Contents Classifying animals and plants Habitats and adaptations Summary activities Feeding types Food chains and populations
  17. 17. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200517 of 25 The organisms in a food chain are dependent on each other. Changes in the number of organisms in one part of the food chain can have dramatic effects on the rest of the food chain. Rabbit numbers would decrease because they would have less to eat and may starve or stop reproducing. Fox numbers would also fall as there would not be as many rabbits to eat. Changes in food chain populations grass rabbit fox What would happen to the number of rabbits and foxes if all the grass died out?
  18. 18. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200518 of 25 1. It has been a very bad year for plankton. Due to the lack of food their numbers have dropped dramatically. Use the sliders to show how this will affect the numbers of the other members of the food chain. Food chain populations plankton shrimp tuna dolphin Shrimp numbers indicator Tuna numbers indicator Dolphin numbers indicator
  19. 19. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200519 of 25 2. Dolphins are often killed by being caught in the driftnets of fisherman. More dolphins than ever have been killed in this particular year and so the number of dolphins is very low. Use the sliders to show how this will affect the numbers of the other members of the food chain. Food chain populations plankton shrimp tuna dolphin Shrimp numbers indicator Tuna numbers indicator Dolphin numbers indicator
  20. 20. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200520 of 25 3. Due to a mysterious disease the number of tuna has dropped dramatically. Use the sliders to show how this will affect the numbers of the other members of the food chain. Food chain populations Shrimp numbers indicator Tuna numbers indicator Dolphin numbers indicator plankton shrimp tuna dolphin
  21. 21. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200521 of 25 4. Large numbers of shrimp larvae did not develop properly and because of this shrimp numbers have declined. Use the sliders to show how this will affect the numbers of the other members of the food chain. Food chain populations Shrimp numbers indicator Tuna numbers indicator Dolphin numbers indicator plankton shrimp tuna dolphin
  22. 22. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200522 of 25 8D Ecological Relationships Contents Classifying animals and plants Habitats and adaptations Summary activities Feeding types Food chains and populations
  23. 23. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200523 of 25 Glossary adaptation – A feature that helps an organism live in a particular place. carnivore – An organism that only eats other animals. consumer – An organism that feeds on plants or animals. food chain – A sequence that shows feeding relationships and the transfer of energy between organisms. herbivore – An organism that only eats plants. omnivore – An organism that eats both plants and animals. population – The number of organisms of a species living in a habitat. producer – A plant that makes food by photosynthesis.
  24. 24. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200524 of 25 Anagrams
  25. 25. © Boardworks Ltd 20041 of 20 © Boardworks Ltd 200525 of 25 Multiple-choice quiz

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