Ecology Pretest B
31 Points
This pretest covers only concepts 34 through 62 and pages 15-17.
Write your answers on your own paper. Do not write on this test.
Write short answers. You do not need complete sentences.
When you have finished taking this test put your answer sheet in the assignment tray, and return this test
to the file folder box.
1. What is the main difference between a warm-blooded and a cold-blooded animal?
2. What are the three main groups of biotic factors in an ecosystem?
3. Explain how photosynthesis works.
4. Why are producers so important to every food chain?
5. What is the difference between photosynthesis and respiration?
6. What is the name of a consumer that eats only plants?
7. Why decomposers so important to an ecosystem?
8. Make a simple diagram or picture labeling and showing all the parts of the nitrogen cycle.
(2 points)
9. Make a simple diagram or picture labeling and showing all the parts of the carbon cycle.
(2 points)
10. How does the energy flow through an ecosystem?
11. What is the source of all energy on the Earth?
12. Draw a simple food chain. Label the producers, consumers, and decomposers.
13. Draw a simple energy pyramid with at least three levels. Label the levels.
14. Energy pyramids show that in an ecosystem the beginning of a food web has _____
organisms and _____ energy than the end. (2 points)
15. Identify the predator and the prey in the following example. A house cat stalks down and
catches a robin.
16. Identify the specific relationship type in the following example. Three dogs jump up and
down and fight for the food bowl their owner sets in front of them.
17. Identify the specific relationship type in the following example. A small bird that eats
flies and other parasites rides on the back of a rhinoceros.
18. What do all the ecosystems in a biome have in common.
19. How much rain does a desert get each year?
20. What is the difference between alpine tundra and arctic tundra?
21. How hot does the savanna grassland biome get in the summer?
22. What is the main producer in a coniferous forest biome?
23. What is the main abiotic factor in the rainforest biome?
24. What is the main biotic factor in the marine biome?
25. What is the typical magnification of the eyepiece lens on a microscope?
26. What is the name for the main platform that holds or supports the slide being viewed?
called?
27. When looking through a microscope should you keep one eye open or both eyes open?
Explain why.
Bonus
28. Make a complex food web of at least 10 organisms that includes producers, herbivores,
carnivores, scavengers, and decomposers. Label each.
29. How is dirt formed? Put the page number from the book that shows the answer.