Biology Study Guide CH 3 The Biosphere
1. ______-the branch of biology dealing with interactions among organisms & between organismsand their environment.
2. ______-the combined portions of Earth in which all living things exist.
3. ______-all the members of a particular species living in one area.
4. Describe the levels of ecological organization from the smallest level to the largest.
5. ______-the simplest grouping of more than one kind of organism in the biosphere.
6. ______the lowest level of environmental complexity that includes living & non-living factors.
7. List & describe the 3 basic methods used by ecologists.
8. A mathematical formula designed to predict population fluctuations in a community could be called an ecological ______.
9. Green plants are ______or ______.
10. What is the original source of almost all the energy in most ecosystems?
11. Where are producers found in the food chain and in the food web?
12. ______- an organism that uses energy to produce its own food supply from inorganic compounds.
13. ______-an organism that cannon make its own food.
14. ______-organisms that obtain nutrients by breaking down dead & decaying plants & animals.
15. ______-an organism that feeds only on plants.
16. ALL the interconnected feeding relationships in an ecosystem make up a FOOD ______.
17. ______-the total amount of LIVING TISSUE within a given trophic level.
18. ______-an ecological model of the relationships that form a network of complex interactions among organisms in a community from producers to consumers.
19. What type of heterotroph eats both producers & consumers?
20. ______level refers to each step in the transfer of energy and matter within a food web.
21. Be able to apply the “types of heterotrophs”.
22. How much energy is transferred from one trophic level to the next? What happens to the energy that is NOT transferred?
23. Which type of pyramid shows the amount of LIVING TISSUE at each trophic level in an ecosystem?
24. ______-the repeated movement of water between Earth’s surface & the atmosphere.
25.______-the process by which bacteria convert nitrogen gas in the air to ammonia. The opposite of this process is ______.
26. Nitrogen fixation is carried out primarily by ______located on ______of plants.
27. BIO GEO CHEMICAL cycling ensures that many nutrients will not reach ______concentrations in the biosphere.
28. If a nutrient is in such short supply in an ecosystem that it affects an animal’s growth, the substance is a ______
______.
29. From a diagram of the water cycle…be able to answer questions.
30. From a diagram of a food chain…be able to answer questions.
31. Be able to “do the math” for an energy pyramid.
32. From a food web diagram…be able to answer questions!
33.DISCUSSION: How does a food web differ from a food chain…DETAILS PLEASE!