Big Idea 2E Basic Review
1. Which of the following is an example of mutualism?
a. A tick living on the scalp of a human
b. Nitrogen fixing bacteria living in the roots of legumes
c. A barnacle living on a whale
d. A wolf preying on cattle
2. Which statement best describes the relationship between organism X and
organism Y in each interaction above?
a. Organism X is positively affected by the relationship and organism Y is
negatively affected.
b. Organism X is negatively affected by the relationship and organism Y
is positively affected.
c. Both organisms are positively affected by the relationship.
d. Both organisms are negatively affected by the relationship.
3. A rocky island appears as ocean waters recede. Which forms of vegetation
would likely appear first on the bare rock?
a. Lichens
b. Weeds
c. Shrubs
d. Trees
4. The diagram above is an example of?
a. Primary ecological succession
b. Secondary ecological succession
c. Biological progression
d. Community interactions
5. The changes in the diagram above will most likely lead to
a. A stable ecosystem that will last for many years
b. Loss of heterotrophs that cannot be recovered
c. Long-term rise of temperature
d. Increased production of carbon dioxide
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6. Which statement is a valid inference if the human population continues to
grow at current rates?
a. Future ecosystems will be distressed and many animal habitats will
be destroyed.
b. Global warming will decrease as a result of lower demand for fossil
fuels.
c. Over one hundred years after resources are used up the human
population will level off.
d. The human population can continue to grow at this rate indefinitely.
7. Fertilizer runoff into a lake results in
a. Death of algae and other aquatic plants
b. Toxic levels of carbon dioxide entering the water
c. Algal bloom
d. Increased levels of dissolved oxygen
8. Biological magnification refers to
a. The higher concentrations of toxins in the tissues of higher order
consumers exposed to toxic waste.
b. The higher concentrations of toxins in the tissues of primary
producers exposed to toxic waste.
c. The intensification of the effects of pollution in an ecosystem.
d. Increased levels of carbon dioxide in the Earth’s atmosphere.
9. Rabbits introduced into Australia have become a serious pest. Rabbit
populations have grown so rapidly they have displaced other native species
of herbivores. Which statement best explains the reason behind their rapid
population growth?
a. Rabbits have a high metabolic rate.
b. There are few native predators of rabbits in Australia.
c. Additional rabbit species have been introduced.
d. There is an increase in rabbit competitors.
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10. Why are fossil fuels nonrenewable?
a. They require hundreds of millions of years to form.
b. Their ecosystems change forever when they are burned.
c. They are converted to carbon dioxide when they are burned.
d. They exist in very small supply.
11. The wearing away of surface soil by water and wind is called
a. Desertification
b. Nitrification
c. Soil erosion
d. Monoculture
12. Scientists think an increase in the amount of carbon dioxide released into the
atmosphere may be causing
a. Average temperatures to increase
b. A blanket of greenhouse gases to surround the Earth
c. A hole in the O-zone layer
d. Global cooling
13. Which of the following is an example of a human activity that would preserve
finite resources?
a. Burn fossil fuels to heat homes
b. Remove carnivores from a forest
c. Recycle aluminum
d. Build a dam
14. Which human activity would have the most positive effect on an
environment?
a. Using fire to eliminate most plants from an area
b. Spraying herbicides to eliminate weeds
c. Protecting native flowers and grasses in an area
d. Introducing a foreign plant species to an area
15. The goals of conservation biologist include all of the following EXCEPT
a. Wise management of natural resources
b. Introduction of non-native species into ecosystems
c. Preservation of habitats and wildlife
d. Protection of biodiversity
16. Using renewable resources while ensuring that they are not depleted is a
practice called
a. Monoculture
b. Subsistence hunting
c. Sustainable development
d. Ecological succession
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17. Where are most nutrients absorbed in the digestive tract?
a. Esophagus
b. Stomach
c. Intestine
d. Rectum
18. How are food and other substances moved through the digestive tract?
a. Voluntary contraction of skeletal muscle
b. Peristalsis of smooth muscle
c. Involuntary contraction of cardiac muscle
d. Voluntary contraction of smooth muscle
Answers
1. b
2. a
3. a
4. b
5. a
6. a
7. c
8. a
9. b
10. a
11. c
12. a
13. c
14. c
15. b
16. c
17. c
18. b
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