Unit Test: Sustainable Ecosystem REVIEW
Terms to know:
Acid precipitation
Autotroph
Bioaccumulation
Biomes
Biocontrol
Birth rate/death rate
Cellular Respiration
Chemical control
Competition
Condensation
Consumer
Decomposition
Evaporation
Extirpated
Extinct
Exponential growth
Fossil fuel
Food chain
Inorganic matter
Invasive species
Limiting factor
Mechanical control
Mortality
Mutualism
Photosynthesis
Precipitation
Predator
Prey
Producer
Regulation
Biodiversity
Decomposer
Food web
Natality
Runoff
Biomagnification
Ecological footprint
Niche
Scavenger
Biotic/abiotic
Bottom up/top down
Carnivores
Ecosystem
Endangered
Equilibrium
Global warming /
greenhouse effect
Habitat
Hotspots
Heterotroph
Omnivores
Parasite
Organic matter
Special Concern
Symbiosis
Threatened
Carrying capacity
Eutrophication
Immigration/emigration
Pesticides
Trophic levels
Sample Multiple Choice
1. The atmosphere is:
a) the water in the oceans
c) the hard part of Earth’s surface
b) the non-living environment
d) the layer of air above Earth’s surface
2. Which of the following spheres includes all life on Earth?
a) Lithosphere
b) Biosphere
c) Atmosphere
d) Hydrosphere
3. Which of the following includes only abiotic features?
a) Temperature, water, light, trees
b) Air, water, soil, grass
c) Air, water, soil, deer
d) Temperature, water, light, wind
4. Which of these factors in a pond ecosystem is a biotic factor?
a) sunlight
b) temperature
c) sediment
d) bacteria
5. Which definition is correct?
a) A population can contain more than one species.
b) An ecosystem includes both biotic and abiotic features.
c) A community refers to a single species
d) A habitat describes the role of an organism in its ecosystem.
6. Which statement accurately describes photosynthesis?
a) Photosynthesis is a process by which producers use light energy to make food.
b) Photosynthesis is performed by green plants and some micro-organisms.
c) Photosynthesis requires both carbon dioxide and water.
d) All of the above
7. The process of cellular respiration:
a) Uses sunlight to make food
b) Releases energy from food using carbon dioxide
c) Releases energy from food using oxygen
d) Stores energy and gives off carbon dioxide
8. Which of the following represents a producer-consumer relationship?
a) Hawks eating snakes
b) Flowers growing plants
c) Rabbits eating grass
d) Earthworms eating dirt
9. The size of a population that can be supported indefinitely by the resources and services of
an ecosystem is known as its:
a) Ecological footprint
b) Niche
c) Exponential limit
d) Carrying capacity
10. This term refers to a system capable of continuing over long periods of time with little change.
a) Community
b) Sustainable
c) Ecosystem
d) Trophic system
11. When two different species interact and both species benefit, it is called:
a) Parasitism
b) Predation
c) Mutualism
d) Commensalism
12. Which of the following is true about pesticides?
a) Pesticides are toxic only to the target species.
b) Pesticides tend to reduce overall food production.
c) Pesticides are used to replace nutrients in soil.
d) Pesticides can pass from an organism to its consumer.
13. Groundwater can become contaminated with nitrogen compounds from the use of
__________.
a) Photosynthesis
b) Respiring
c) Fertilizers
d) Bleaching
14. Which are two ways a population can decrease in size?
a) immigration and emigration
b) increased death rate and immigration
c) decreased birthrate and emigration
d) emigration and increased birthrate
15. The following methods are used to control the population of invasive species EXCEPT
a) biocontrol
b) bioaugmentation
c) chemical control
d) mechanical control
Sample Short Answer
Use the food web below to answer questions 1-4.
Answer the questions 1-4 using the food web provided:
1. Classify each organism as a producer, herbivore,
carnivore, or omnivore.
2. State two animals that are in competition for food.
State two that are predator/prey.
3. Which organism has the least amount of energy
available to it? Explain why?
4. Explain how the process of biomagnification may
occur in the food web shown.
5. Write the word equation for cellular respiration.
6. Write the word equation for photosynthesis
7. How are photosynthesis and cellular respiration related?
8. What are the characteristics of a sustainable ecosystem?
9. What abiotic factors may affect the growth of an oak tree in an Ontario forest?
10. Draw and label a simplified carbon cycle.
11. Why are decomposers important in the carbon and nitrogen cycles?
12. In the fall and winter, atmospheric levels of carbon dioxide rise. In the spring and summer,
these levels are much lower. Use your knowledge of the carbon cycle to propose an
explanation for these changes.
13. Draw the population growth curve that represents the change in the reindeer population on
St. Matthew’s Island. Explain what happened, use appropriate terminology in your answer.
14. What is the role of photosynthesis in an ecosystem?
15. What is meant by the term “ecological footprint”?
16. What are the five threats to biodiversity?
17. Explain why frogs are a “Good Indicator” of the health of an ecosystem.
18. Label the water cycle:
Answer the questions 19-21 using Graph A:
19. What is the carrying capacity for graph A?
20. Approximately during which year did this population
reach the carrying capacity of its ecosystem?
21. About how many years did it stay at the carrying
capacity?