tree releases oxygen and humans exhale carbon dioxide diagram

8/14/2019 Tree Releases Oxygen and Humans Exhale Carbon Dioxide Diagram

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ECOLOGY UNIT TEST NAME: ___________________________

VOCABULARY: Match the vocabulary word with the correct definition or example.

A. carrying capacity C. greenhouse effect E. mutualism G. parasitism

B. decomposer D. interdendence F. nitrogen fixation H. symbiosis

____ 1. maximum number of organisms that can live in an ecosystem

____ 2. bacteria use this process to chance nitrogen in the air into ammonia

____ 3. carbon dioxide in the air traps heat, which can lead to global warming

____ 4. organisms interact with each other, so that if you change one species it affects other species

____ 6. this relationship benefits one species, but could harm the other

______ 5. both species benefit from this relationship, like algae and coral in the ocean

__ 7. close, long-term relationship between two or more species

____ 8. organism that gains energy and nutrition by recycling dead organic wastes and dead material

TRUE or FALSE: Use the diagram of an arctic ocean ecosystem to answer questions

________________9. Both cod fish and penguins are omnivores.

________________10. Algae are the only producers pictured in the diagram.

________________11. Leopard seals are carnivores.

________________12. Because all the arrows lead to the killer whale, it will have the highest population.

________________13. The adelie penguin has two predators pictured in the diagram.

________________14. The cod and squid are competitors.


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________________15. Algae are at the lowest trophic level of this ecosystem.

________________16. Krill, cod, and squid are level two consumers.

________________17. Algae are at the lowest trophic level of this ecosystem.

_____ 18. How is the energy flow in an ecosystem different from nutrient flow?

a. energy flow is more complex c. only 10% of nutrients are used

b. nutrients can be recycled and re-used d. energy and nutrients have the same flow

____ 19. Which type of species in an ecosystem can gain energy from every other type?

a. producer b. herbivore c. carnivore d. decomposer

____ 20. Combustion of fossil fuels releases ____________ into the atmosphere.

a. carbon dioxide b. nitrogen c. ammonia d. oxygen

____ 21. Which biome has the greatest diversity and populations of living species?

a. temperate grassland c. desert

b. tropical rain forest d. all biomes are about the same

____ 22. Which of these factors is a limit or potential problem for using ecological models?

a. poor data collection or counting c. researchers using wrong formulas or data

b. real nature is more complex than models d. All of the above

____ 23. What climate factors account for differences between Nebraska ecosystems and the tropical

rainforest?

a. annual average temperatures c. diversity of speciesb. annual rainfall d. both a & b

____ 24. What is the primary human threat to cougar populations?

a. traffic accidents b. hunting c. loss of habitat

____ 25. How does carbon on earth get back into the atmosphere?

a. animals exhale carbon dioxide c. burning fossil fuels for energy

b. decomposers produce carbon dioxide d. All of the above

____ 26. How do humans get the nitrogen they need for making proteins?

a. breathe in from the air c. nitrogen fixation during respiration

b. from eating protein-rich foods d. both a & b

_____ 27. Which of these is an abiotic factor that affects populations?

A. predators B. food supply C. weather D. disease


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_____28. What type of growth does this graph illustrate? X

A. logistical growth

B. constant growth

C. exponential growth

_____ 29. What does the line at the top of the graph (labeled X) represent?

A. abiotic potential B. emigration C. carrying capacity D. death rate

_____ 30. Why is determining exact animal populations difficult?

A. most animals move around C. many animals hide from humans

B. there are different techniques for counting D. all of the above

_____ 31. A researcher catches and tags 10 catfish, and returns them to a lake. Later, he catches 20

catfish total, and 4 have tags. What is the best estimate of the total catfish number in the lake?

A. 5 B. 50 C. 100 D. 200

_____ 32. Which of these types of species would you expect to have the lowest populations in an

ecosystem?

A. predators B. autotrophs C. herbivores

_____ 33. Which of these phrases has the closest meaning to carrying capacity?

A. rapid growth B. exponential growth C. maximum population D. 10%

rule

_____ 34. A population that grows rapidly without any limits is called

A. natural growth B. exponential growth C. logistical growth

_____ 35. Why has the human population on earth increase rapidly in the past 200 years?

A. higher birth rate (women have more babies than before)B. lower death rate due to science and technology (medicine, vaccines, etc.)

C. more immigration from other countries

_____ 36. Animals use _______ to move from one area to another because of food, water, or

seasons.

A. birth rate B. mutualism C. commensalisms D. migration


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_____ 37. Which of these is part of the nitrogen cycle?

a. Evaporation b. Photosynthesis c. Assimilation

_____ 38. Which of these events seems to be related to greenhouse gases like carbon dioxide?a. 10% rule b. logistical growth c. global warming d.

immigration

Matching: Match the biome with the descriptions

_____ 39. Coldest temperature, least amount of precipitation

_____ 40. Seasonal temperatures, lots of trees

_____ 41. Rainy seasons and dry seasons, always hot; lots of grass

_____ 42. Hot temperatures, lots of rain

_____ 43. Nebraskas biome (prairie, bison)

ANSWERS ON NEXT PAGE!!

1, A

2 F

3 C4 D

5 E

6 G

7 H

8 B

9 T

10 T

11 T12 F

13 T

14 T

15 T

16 T

17 T

A. tropical rain forest

B. savanna

C. temperate forest

D. temperate grassland

E. taiga


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18 B

19 D

20 A

21 B22

23 D

24

25 D

26 B

27 C

28 H

29 C

30 D

31 B

32 A

33 C

34 B

35 B

36 D

37 C

38 C

39 F

40 C

41 B

42 A

43 D

tree releases oxygen and humans exhale carbon dioxide diagram

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