1. What Is the Optimum Range of Humidity for the Cactus?

Ecology Review

Using the following data, graph the limits of tolerance for percent humidity for African violets and cactus. Draw the African violets in purple (or blue) and the cactus in green. Then answer the questions that follow on the back of the graph.

DATA (the first number is the percent humidity, the second number is the number of African violets surviving, and the third number is the number of cactus surviving):

0,0,10; 10, 0, 32; 30, 0, 38; 40, 0, 34; 50, 5, 32; 60, 10, 30; 70, 22, 10; 80, 45, 5; 90, 44, 0; 100, 10, 0

1. What is the optimum range of humidity for the cactus?

2. What is the optimum range of humidity for the African violet?

3. Which plant has a greater tolerance?

4. Identify what components of an ecosystem are not part of a community.

5. Look at page 338 in your book. Identify 4 biotic factors (not all of them may be visible)

6. Look at page 338 in your book. Identify 4 abiotic factors (not all of them may be visible)

7. Explain or relate how gardening or agriculture affects succession.

8. 1000 years or more while secondary succession may only take 100 years. Why?

9. List some characteristics of a pioneer species.

10. List the following from smallest to largest:

Cell, biome, ecosystem, atom, organ, population, molecule, tissue, individual, organ system, community

11. Biodiversity refers to the variety of organisms living in an ecosystem. Where would you expect to find more biodiversity, the arctic region, a desert or the rainforest. Why?

12 - 15

_1à_2à_3_à4__

You have a food chain with 4 slots. . In which slot would you place:

12. A wolf #13. A primary consumer #14. A producer #15. A carnivore

16. What is the difference between producers and consumers?

17. Given the following organisms make a food web.

Bear, berries, sun, deer, algae, fish, mushrooms, earthworms, grass, mouse, snake, hawk

18 - 21

Look at the food web on page 347. Identify the following:

18. All the organisms on the 2nd trophic level

19. All the organisms that eat on or above the 5th trophic level.

20. All the organisms that are tertiary consumers

21. All the organisms that are omnivores

22. Name the producer(s) on this web.

23. Name the heterotrophs on this food web

24. If a food web shows the flow of energy, where is the energy coming from?

25. What is an easy way to tell what the autotrophs are in a food web?

26. Are there any organisms that conduct photosynthesis in this food web. If so, which one(s)?

27. Are there any organisms that conduct cellular respiration in this food web. If so, which one(s)?

28. Look at your food web in #17. If a chemical company is dumping a herbicide into the lake, what will be affected and how?

29. Explain why scientist believe that most animals would become extinct if all plants died.

30. If the sun provides a plant with 25,000 J of sunlight, how much of that energy would be available in the tertiary consumer?

31. You can eat 800 calories by having an 8 oz porterhouse steak or 10 slices of bread. Which 800 calories originally required more sunlight to produce? Explain.

32. What are three models for population growth and which one is most common?

33. Contrast (tell me how they are different) an R strategist and a K strategist

34. Fill in the following chart:

Relationship / Symbiosis? / ++, +-, +0 / Define / example
Predation / No
Mutualism / Yes
Commensalism
Parasitism

34 ½ . What is the definition of symbiosis?

35. What purpose does predation serve (besides providing food for the predator)?

36. What are the levels of classification starting from most general and going to most specific?

37. Know the proper way to write a scientific name. Practice with these examples:

Red Oak tree: genus: quercus species: rubra scientific name:

Madagascar Hissing cockroach: genus: gromphadorhina species: portentosa

Scientific name:

Peanuts: genus: arachis species: hypogaea scientific name:

38. Know the kingdom chart. Here are some sample questions that you might see:

Your choices are: Archeabacteria (A), Eubacteria (E), Plant (Pl), Animal (A), Fungi (F), Protist (Pr)

List all the kingdoms an organism with each characteristic could live in

· Can move ______

· Is a consumer ______

· Is an autotroph ______

· Is a prokaryote ______

· Has a nucleus ______

· Is multicelled ______

· Can’t move ______