วันพฤหัสบดีที่ 19 พฤษภาคม พ.ศ. 2554

4.5(a&b) Food Chains and Food Webs

4.5a Food Chains 



Food Chains link together:
Producer ----> Primary Consumer ------> Secondary Consumer -----> Tertiary Consumer


  • Only one organism per trophic level
  • You cannot show an organism being an omnivore / cannot show organisms feeding at more than 2 trophic levels
  • Food Chains show the flow of matter and flow of energy




4.5b Food Webs




The food web allows us to provide a better description of the ecosystem (ecosystems are community of organisms interacting) In this case interacting = feeding

Feeding at different trophic levels:
consequences
- organisms can have multiple predators
- may be feeding on multiple pray
- resulting to the food chains becoming linked.

ไม่มีความคิดเห็น:

แสดงความคิดเห็น