Science 10
Biology Unit
Ch 2 Energy Flow and Nutrient Cycles
Mr. Bellman
wkst 1 (17 )
From page 54
1. Why are krill so important in our oceans?
NAME____________________
Date______________Bk_____
2. Read the beige section on page 56. It summarizes this section of the chapter.
3. Define biomass.
4. Define energy flow.
5. Define producers and give some examples.
6. Define consumers and give some examples.
7. Define decomposition.
8. Define biodegradation.
9. Define decomposers and give some examples.
10. What are some models that scientists use to help understand how energy flows or is lost in ecosystems?
11. Define food chain.
12. Define trophic level.
13. What do trophic levels show?
14. Define primary producers and give some examples.
15. Define primary consumers and give some examples.
16. Define secondary consumers and give some examples.
17. Define tertiary consumer and give some examples.
18. Copy the fig 2.6 page 60, a terrestrial food chain and label the trophic levels 1,2,3,4 as well.
19. Define detrivores (AKA detritivores) and give some examples.
20. What is the difference between a decomposer and a detrivore?
21. Define herbivores and give some examples.
22. Define carnivores and give some examples.
23. Copy the fig 2.8 page 61.
24. Define omnivores and give some examples.
25. Define food web.
26. Define food pyramid.
27. Another name for food pyramid is ecological pyramid. What types of ecological pyramids are there? Check out p 66.
28. Why do desert and tundra biomes have
fewer organisms than a rainforest biome?
29. Copy the food pyramid fig 2.13 page 64.