Matching: Place the letter that best defines the numbered term in the correct place on your answer
sheet. (5 points each)
A. abiotic factor F 1. organism that breaks down the wastes or remains of other organisms
B. biosphere G 2. way of showing the food relationships among a group of organisms
C. biotic factor H 3. all of the individuals of one species that live and reproduce in the same area at the same time
D. community J 4. animal that eats only dead organisms
E. consumer B 5. the part of the Earth that supports organisms
F. decomposer A 6. the nonliving, physical features of the environment that include soil, light,
water, temperature, and air
G. food chain D 7. populations of different species that interact in some way
H. population I 8. organisms that makes its own food
I. producer C 9. living or once-living organisms in the environment
J. scavenger E 10. organism that obtains food by eating other organisms
Multiple Choice: Read each question or statement. Place your answer on the answer sheet. (2 points each).
C 11. The cycle that involves evaporation and precipitation A. oxygen B. nitrogen C. water
D. carbon
C 12. The cycle that uses a common element to make amino acids and proteins A. oxygen B. water
C. nitrogen D. carbon
C 13. During photosynthesis, plants give off this as waste in this cycle A. carbon B. water C. oxygen
D. nitrogen
C 14. Respiration occurs in plants and animals and uses oxygen in the breakdown of food A. nitrogen B. water C. carbon D. oxygen
C 15. Secondary consumers are eaten by these
A. producers B. secondary consumers C. tertiary consumers D. decomposers
C 16. The producers in lakes and oceans A. mushrooms B. trees C. algae D. flowers
C 17. A food chain always begins with this A. consumer B. scavenger C. producer D. decomposer
C 18. The layer of an energy pyramid that has the most food and energy contains A. scavengers
B. consumer C. producers D. decomposer
C 19. Way of showing the food relationships among a group of organisms A. energy pyramid
B. food chain C. food web D. energy cycle
C 20. Shows how energy moves through a food chain A. food web B. food chain C. energy pyramid
D. energy cycle
Reading and Interpreting: Read the following passage and answer the questions. (2 points each).
Plants use energy from the sun to make food. They use sunlight to convert water and oxygen into sugar.
Plants also need other materials to make new cells and maintain their structure. They use minerals such as nitrogen and calcium. Most plants get these minerals from the soil.
A method of growing plants without soil has been developed. This method is called hydroponics. The roots of plants are placed in a special liquid. Minerals the plants need are contained in the liquid. Plants grown
in this way develop as well as plants grown in soil.
Plants grown by hydroponics are protected from harsh weather and from insect and animal pests. The plants can be checked and cared for more easily than if they were outdoors. In addition, the amounts of minerals provided for the plants can be carefully controlled. Hydroponics is a way of growing crops in areas with poor soil. As people look for new and better ways of growing crops, hydroponics is sure to attract more interest.
D 21. According to the article, a positive reason for growing plants using hydroponic techniques is
A. plants are protected from harsh weather, insect and animal pests B. amounts of minerals provided for the plants can be monitored and controlled C. plants can be checked and cared for more easily D. all of the above
D 22. It can be inferred from the article that
A. plants grown using hydroponics produce more fruits than plants grown in soil B. plants grown in soil produce more fruits C. neither plants grown using hydroponics or soil grow very well
D. plants using hydroponics can grown as large and produce as much fruit as plants grown in soil
D 23. In the passage, what is meant by the word convert? A. measure B. add C. move D. change
D 24. What does the article imply about hydroponics? A. it is a waste of time to grow plants using
hydroponics B. plants need more space to grow using hydroponics C. hydroponically grown plants taste different D. growing plants using hydroponics is a way to grow plants in deserts and rocky areas
D 25. What does the article attempt to explain? A. what plants need to grow B. how plants make food
C. why soil is important D. how technology can help society