Food Web Questions
1. What is used to indicate the flow of energy in a food chain or web? Energy.
2. What happens to energy as we move from step to step in a chain or web? The energy decreases as you move step to step in a chain The first organism (primary consumer) that eats the producer (green plants) will have the most number
3. Define food web. A system of interlocking and interdependent food chains.
4. What is meant by trophic levels? Each of several hierarchical levels in an ecosystem, comprising organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy.
5. Define autotroph. An organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.
6. The 1st trophic level consists of primary consumers called autotrophs.
7. Name the 2nd trophic level (both names). Primary consumers, herbivores
8. Secondary consumers may be carnivores, omnivores eating meat or omnivores that eat both plants
and animals.
9. What is the 3rd trophic level called? Secondary consumers
10. What is the 4th trophic level called? Tertiary consumers
11. At the 5th trophic level would be quaternary consumers that eat tertiary consumers.
12. Give an example of 3 detritivores. On what do they feed? Vultures, worms, and crabs: organisms
13. What organism feeds on dead plants and animals and helps recycle them? Decomposers
14. Both bacteria and fungi act as decomposers
15. Can an organism fill more than one trophic level --- yes or no? Give an example. Yes. People eat plants and are primary consumers, people also eat meat and are secondary or even tertiary consumers.