SCI120 – Competition, predation, and parasitism

10 Jun SCI120 – Competition, predation, and parasitism

Question
1. Competition, predation, and parasitism are _______ factors influencing population growth.

A. statistic

B. density independent

C. density dependent

D. logistic

2. _______ is the science of observing and describing organisms in their environment paired with experimental science.

A. Conservation biology

B. Ecology

C. Environmental science

D. Natural history

3. Which of the following is a direct value of biodiversity?

A. Biogeochemical cycles

B. The agricultural value of pollinators

C. Regulation of climate

D. Provision of fresh water

4. Patterns of _______ indicate how age at death influences population size.

A. age structure

B. death rate

C. logistic growth

D. survivorship

5. Among human populations, most fresh water is used for

A. flushing toilets.

B. drinking and cooking.

C. energy.

D. agriculture and industry.

6. In what life history pattern does logistic population growth occur?

A. Density-dependent pattern

B. Biotic pattern

C. Equilibrium pattern

D. Opportunistic pattern

7. Which organism has the lowest biotic potential?

A. Rabbit

. Golden Retriever

C. Rhinoceros

D. Mouse

8. What characteristic of a population increases with plentiful resources?

A. Population density

B. Spatial distribution

C. Range

D. Clumping

9. Modern fishing practices threaten biodiversity mainly through the

A. removal of community food supplies.

B. chemical poisoning of the water.

C. accidental capture of unwanted species.

D. physical destruction of marine habitats.

10. According to the principle of _______, a change in one species in a community results in a change in another.

A. parallel evolution

B. divergence

C. coevolution

D. ecological succession

11. If the birthrate is 10 per 1,000 and the death rate is 10 per 1,000, then the growth rate is

A. 20%.

B. 10%

C. 100%.

D. 0%.

12. The process of chemical cycling is known as the biogeochemical cycle because it

A. absorbs the chemicals involved from the sediment.

B. involves both living and nonliving components.

C. withdraws the chemicals from the atmosphere as a gas.

D. takes place over a long period of time.

13. Which of the following does not describe an MDC?

A. It has undergone the demographic transition.

B. Its age structure diagram resembles a pyramid.

C. It’s highly industrialized.

D. It generally experiences replacement reproduction.

14. Which of the following is a renewable resource?

A. Land

B. Minerals

C. Fossil fuels

D. Wind

15. Grass, deer, rabbits, fox, and bear all make up what level of biological organization?

A. Community

B. Population

C. Biosphere

D. Ecosystem

16. Environmental impact of a population includes all of the following except

A. resource consumption.

B. pollution.

C. predation.

D. population size.

17. Why might introduction of exotic species disrupt an ecosystem?

A. There are very few of the organisms present.

B. They can outcompete native species.

C. They’re struggling to survive and can be disruptive.

D. They die quickly and overfeed scavengers.

18. A complex of interconnected food chains in an ecosystem is called a/an

A. trophic stack.

B. ecological pyramid.

C. food web.

D. ecosystem.

19. During exponential growth, the rate of growth

A. starts quickly and then levels off.

B. remains steady over time.

C. starts slowly and then accelerates.

D. declines consistently over time.

20. Which of the following factors will have a greater impact on a population as the density of that population increases?

A. Predation

B. Natural disaster

C. Weather

D. Climate