Name: ________________________________________Period: _____ Date of test: June 1st

4th 9 Weeks Common Assessment Review 1. Which diagram does NOT represent an ecosystem? (there may be more than one correct

answer)

A B

C D

2. An exotic plant is introduced to a stable ecosystem. This exotic plant has no natural enemies and thrives in the ecosystem. How will this plant affect the community?

A. The number of native species will decrease.B. The native species will be unaffected.C. The native species will become extinct.D. The number of native species will increase.

3. Which would cause succession on a prairie? (there may be more than one correct answer)A. A devastating fire. B. Grass blown flat due to wind. C. Soil remaining wet after heavy rain. D. Grass plants die after a long draught.

4. In the food chain below, where is light energy converted to chemical energy?

A. Sun B. Frog C. Hawk D. Grass

5. Grass helps to prevent erosion because it is able to----

A. Store nutrients B. Absorb water C. Hold soil in place D. Undergo photosynthesis

6. Which of the following BEST describes a desert ecosystem? A. Animals and plants that live in the desert. B. The organisms and nonliving environment in the desert. C. The plants and rocks that live in the desert. D. The cacti and scorpions that live in the desert.

7. Which statement best describes the likely relationship in the food chain shown below? SUN---------->GRASS------->DEER--------->COYOTE

A. If the grass population decreases, the deer population increases. B. If the deer population increases, the grass population increases. C. If the grass population increases, both the deer and coyote populations increase. D. If the deer population decreases, the coyote population will remain the same.

8. Decomposers play an important role in ecosystems. Decomposers in the soil help trees by---- A. Providing important nutrients.B. Collecting sunlight. C. Stalling growth. D. Keep predators away.

9. Solar energy must be converted into a form of energy that humans can use to carry out their lives. The sequence that shows this path of energy is----

A. Radiant energy, heat energy, chemical energyB. Radiant energy, chemical energy, mechanical energyC. Heat energy, mechanical energy, radiant energyD. Heat energy, chemical energy, mechanical energy

10. Look at the image below. The arch in the rock was most likely caused by---

A. Gravity B. Oxidation C. Wind D. Waves

11. What does photosynthesis produce?A. Carbon Dioxide & GlucoseB. Oxygen & GlucoseC. Chlorophyll & OxygenD. Sunlight & Carbon Dioxide

12. What is needed for photosynthesis to occur?A. SunlightB. OxygenC. Carbon DioxideD. Water

13. What would be the most logical step after lichens, liverworts?

A) Growth of large treesB) Growth of bacteriaC) Growth of mosses

14. What would be the most logical step after herbs, weeds/grases, insects, small plants?A) Growth of shrubs and small trees

B) Growth of mosses and lichensC) Growth of oak trees

15. What is a good explanation as to why hardwood trees take so long to grow and outlast all others as an ecosystem maintains equilibrium?A) Because the shrubs require more carbon dioxide than the trees.B) More soil is needed for trees. C) The trees block sun from small shrubs so they last longer over time.

16. An ecosystem may take several years to rebuild after a natural disaster. This rebuilding is known as ______________________________.

A) Erosion B) Decomposition C) Succession D) Denitrification

17. Dead plants and trees are also broken down and then recycled back into the earth/ground. Which organisms break down these trees

A) Decomposers B) Autotrophs C) Heterotrophs D) Consumers

18. What happens to the dead organisms (from question 15)?A) They stay at that current location forever unless moved by a natural disaster.B) They support new plant life.C) They must be removed by humans (ranchers or farmers).

19. Astronauts must wear special spacesuits with heat resistant shields when they leave their spacecraft. The suit protects astronauts in space from:

A) Bugs and outer space wildlife B) Extreme temperatures C) Ruining clothing

20. This summer you go to your annual family river trip and notice that the path of the river has changed. In fact, the rivers has moved over quite a bit. Which of the following could have caused this movement?

A) Volcanic eruption B) Hurricane winds C) Erosion & Deposition

21. What could be a cause of surface water pollution?A) Rocks moving to a new location.B) Fertilizers being washed away by a heavy storm.C) Lake water evaporating making the lake more shallow.

22. Which would be the final stage of succession from the list of plants below?a. pine treesb. hardwood treesc. annual weedsd. perennial weedse. shrubs

23. When the plasma membrane pushes against the cell wall of a plant it is know as ________________________.

A. cellular respirationB. transpirationC. turgor pressureD. phototropism

24. Paper products that are buried in the ground, in a landfill will ______________ over time.A. decompose B. weather C. go through erosionD. denitrify

25. The drawing above is an example of __________________________.A. phototropismB. geotropismC. turgor pressure D. transpiration

26. Earth is the only planet in our solar system to have water in all three forms. A) True B) False

27. Which erosion tray below will produce the least sediment in its bowl? A, B or C

28. When a pond goes through ecological succession it will get shallower and shallower because ____________.

A. sediment will fill it up over timeB. the water evaporates awayC. of droughtD. water slowly soaks into the ground

29. About ¾ of the air that we breath is made up of __________.A. oxygenB. carbonC. carbon dioxideD. nitrogen

30. Which is the correct order of the layers of the atmosphere?A. Troposphere, stratosphere, mesosphere, thermosphereB. Thermosphere, mesosphere, stratosphere, troposphereC. Troposphere, mesosphere, thermosphere, stratosphereD. Mesosphere, troposphere, thermosphere, stratosphere

31. In outer space astronauts have to be careful of very high pressures. A) True B) False

32. A company clears a wooded lot of a trees and leaving just bare ground. What will be the first organisms to come back to the area?

A. lichen B. shrubsC. softwoods D. hardwoodsE. grasses

33. Water becomes groundwater when it ___________.A. runs off into a river or other tributaryB. condences into water vaporC. transpires from tree leavesD. it soaks into the ground

34. Which is a reason why scientist hypothesize that life can not exist in the outer planets of our solar system?

A. planets are too largeB. planets are too smallC. they are too far from the SunD. their seasons are too long

35. In order for fertilizers to have the least impact on on our groundwater, ______.A. it must run off into streams, creeks and riversB. it must soak into the root systems of plants that it is intended forC. it must evaporate back into the water cycle

36. Which city in Texas is less likely to be directly affected by a hurricane?A. BrownsvilleB. HoustonC. GalvestonD. Austin

37. A tornado with sustained winds of 255 mile per hour would be a ______ on the Fujita scale.A. F0B. F1C. F2D. F3E. F4

38. Below is the diet of a coyote in the Rolling Plains. Due to increased urban build up, what two areas of the circle graph might you see an increase?

A. Vegetation and InsectsB. Insects and Carrion C. Carrion and Livestock & PoultryD. Vegetation and Rodents

39. Which two organisms below do NOT have predator-prey relationships?A. Grasshopper and AardvarkB. Termite and MongooseC. Mouse and MongooseD. Harvester ant and Aardvark

40. Which ecosystem is more biodiverse and if one species were to die off would not have as much of an impact on the rest of the ecosystem? A) the one on the left B) the one on the left

ANSWER KEY

1. A, B, D 2. A3. A, D 4. D5. C6. B7. C8. A9. B10. D11. B12. A, C, D13. C14. A15. C16. C17. A18. B19. B20. C21. B22. B23. C 24. A 25. B 26. True 27. A28. A29. D30. A31. False32. E 33. D34. C35. B 36. D37. D38. C39. A40. Right