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A Web Of Interactions

A Web Of Interactions. Food Chain: a single sequence of feeding relationships in an ecosystem . Example……. A Food Chain. Food Webs. All the feeding relationships in an ecosystem. All the food chains combine to form a food web. Key Terms.

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A Web Of Interactions

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  1. A Web Of Interactions Food Chain: a single sequence of feeding relationships in an ecosystem. Example……

  2. A Food Chain

  3. Food Webs All the feeding relationships in an ecosystem. All the food chains combine to form a food web.

  4. Key Terms • Producers – organisms that make their own organic matter i.e. green plants Examples……..

  5. Key Terms • Consumers – organisms that eat other organisms to obtain their organic matter • Primary Consumer or First Order Consumer • Secondary Consumer or Second Order Consumer • Tertiary Consumer or Third Order Consumer Examples……..

  6. environments food chains and food webs Owl Third order consumer Shrew Second order consumer Leaf Producer Earthworm First order consumer

  7. Decomposers and scavengers Break down dead animal and plant litter Examples...

  8. Decomposers can be bacteria, or fungi....

  9. Decomposers that are scavengers are animals....

  10. More Terms • Herbivores: feed directly on producers • Carnivores: feed only on consumers • Omnivores: feed on consumers and producers • Detritivores: feed on dead plant and animal matter

  11. Are we the highest level of the food chain.....

  12. When Tanya Andrews returned from a recent family holiday in Costa Rica, she had no idea she had brought back a gruesome souvenir. A month later she developed an extremely painful lump on her head. At first, she thought she had an abscess, but then it wriggled. At the Hospital for Tropical Diseases they recognised the problem straight away - it was the living maggot (larva) of a botfly. While Tanya was enjoying her holiday a mosquito had delivered a tiny botfly egg onto the surface of her scalp. The egg hatched into a maggot and burrowed deep inside. Incredibly, this happens to thousands of people every year. As we travel to ever more exotic holiday destinations, we are at the mercy of a whole range of bizarre parasites just waiting to colonise us.

  13. Key Terms • APEX predators – sits at the top of a food chain Examples……..

  14. Food pyramids

  15. Food pyramids

  16. Food pyramids

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