Food chains, food webs and ecological pyramids are models to show feeding relationships in ecosystems. Interactions between organisms and their environment results in transfers and transformations of energy and matter.
Lessons
| 1 | Respiration and photosynthesis | ||||||
| 2 | Food chains, food webs and feeding relationships | ||||||
| 3 | Ecological pyramids | ||||||
| 4 | Productivity pyramids and limitations to food chain length | ||||||
| 5 | Bioaccumulation and biomagnification | ||||||
Practicals
- Construct/modify a feeding relationship model using given data e.g. Using the Lotka-Volterra equations (information and model here).
Essay Task
“DDT can accumulate through the food chain in increasing concentrations as a consequence of biomagnification. Compare the attitudes that an ecocentrist and an anthropocentrist may have on the use of DDT.” [9 marks]
The essay should marked using the Paper 2, Section B essay markbands.
Google Docs Version
Open the link and make a copy to your own drive. The doc can easily be shared as an “Assignment” on Google Classroom.
A markbands rubric designed for Google Classroom is available here.