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BIO 101 Exam 13

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Question 1


Imprinting helps birds

Select one:

a. perform the proper courtship ritual.

b. defend their territory.

c. recognize a member of their own species.

d. form a fixed action pattern.

e. build a better nest.


Question 2


The theory that plants cannot grow on a particular area until the soil has been developed enough by an earlier community is the

Select one:

a. climax-pattern model.

b. facilitation model.

c. inhibition model.

d. tolerance model.

e. soil development model.


Question 3


Age structure diagrams with a broad base suggest that

Select one:

a. the population will continue to grow for some time.

b. environmental resistance is not at work.

c. the biotic potential must be larger than usual.

d. the individuals must be larger than usual.

e. there are many older individuals in a population.


Question 4


In a population of 150 organisms over a six month period there are 75 births and 30 deaths. Calculate the growth rate for those six months

Select one:

a. 0.7

b. 0.5

c. 0.2

d. 0.3

e. 0.75


Question 5


The maximum population that the environment can support for an indefinite period of time is called the

Select one:

a. biotic potential.

b. environmental resistance.

c. carrying capacity.

d. replacement reproduction.

e. demographic transition.


Question 6


An increase in fitness—the survival of more offspring—that occurs due to competition among males and mate choice by females is called

Select one:

a. altruistic behavior.

b. selfish behavior.

c. natural selection.

d. sociobiology.

e. sexual selection.


Question 7


Tundra is divided into alpine tundra at the top of mountains and arctic tundra found close to the North Pole. These two biomes have similar plants and animals even though they can be located in vastly different regions of the world. What causes these two biomes to be similar?

Select one:

a. Both are found close to coniferous forests.

b. One is cold and dry because it is at a high latitude and the other is cold and dry because it is at a high altitude.

c. Both are located in areas of intense sunshine.

d. One grows mostly grasses because the soil is poor and the other grows mostly grasses because the soil is frozen.

e. Both have large grazing herds that keep the grasses clipped short.


Question 8


In the biosphere, which of the following is NOT constantly recycled?

Select one:

a. carbon

b. nitrogen

c. water

d. energy

e. phosphorus


Question 9


____ is defined as the transmission of a signal from one animal that influences the behavior of a receiving animal.

Select one:

a. Imprinting

b. Dominance hierarchy

c. Communication

d. Circadian rhythm

e. Operant conditioning


Question 10


A very rapid kind of communication that works even at a distance and in the dark is

Select one:

a. chemical communication.

b. auditory communication.

c. tactile communication.

d. visual communication.

e. pheromones.


Question 11



The climax pattern model states that the same area will always lead to a specific type of community if it is given a sufficient amount of time. Which of the following statements is true of this model?

Select one:

a. In recent time this has been modified to recognize that while the area may return to the same biome it may not have exactly the same species diversity.

b. An area that has been disturbed must always return to the same climax community if given enough time.

c. It is necessary for an area to return to the climax community before it is disturbed again or the area will undergo primary succession on a second disturbance.

d. The area must undergo primary and then secondary succession before it can reach the climax community.

e. In recent time this model has been changed to state that the climax community cycles through a series of different possibilities.


Question 12



When pioneers move into a wooded area, they slash and burn the woods, increasing grass production. Initially, they are likely to see

Select one:

a. foxes increase.

b. squirrels increase.

c. grasshoppers increase.

d. hawks decrease.

e. grasshoppers decrease.


Question 13


You are laying on your favorite beach in Florida and while looking down the beach you observe periodic white flashes in the sand. You get up and walk down the beach to see what is causing the flashes. You observe Fiddler Crabs waving their enlarged claw in the air producing the flashes. This behavior is an example of

Select one:

a. auditory communication.

b. chemical communication.

c. visual communication.

d. tactile communication.

e. territoriality.


Question 14



There are tubeworms and clams that live at the bottom of the ocean near thermal vents. They derive their energy ultimately from

Select one:

a. the sun by way of burning fossil fuels like we do with coal and oil.

b. the sun, but they are deep in the dark ocean and live off dead detritus that sinks to them.

c. bacteria that break apart hydrogen sulfide molecules and are therefore not dependent ultimately on sunlight.

d. sources not yet known.

e. photosynthesis.


Question 15


In an experiment carried out to study the energy flow through an ecosystem scientists measure the total solar energy captured by plants to be 10,000 kilocalories. The portion of this available to the next trophic level will be

Select one:

a. 10,000 kilocalories

b. 1,000 kilocalories

c. 100 kilocalories

d. 10 kilocalories

e. 1 kilocalorie


Question 16


An example of commensalism is

Select one:

a. mycorrhizal fungal roots on the roots of plants.

b. ants living on the bullhorn acacia tree.

c. termites with protozoa in their digestive tracts.

d. flowering plants and their pollinators.

e. clown fishes in sea anemones.


Question 17


Which of the following is NOT a carbon reservoir?

Select one:

a. living organisms

b. dead organisms

c. coal

d. ammonium and nitrates

e. inorganic carbonate in limestone/carbonaceous shells


Question 18


The taiga is a

Select one:

a. tropical rain forest.

b. temperate deciduous forest.

c. chaparral.

d. grassland.

e. coniferous forest.


Question 19


Which two organ systems are most involved in producing physiological changes leading to appropriate behavior patterns?

Select one:

a. nervous and digestive

b. digestive and urinary

c. nervous and reproductive

d. nervous and endocrine

e. reproductive and digestive


Question 20


When wet ocean winds blow onshore for half the year and slowly rise and cool, causing long periods of rainfall over a large area, this is referred to as

Select one:

a. lake effect.

b. eutrophication.

c. a montane successional gradient.

d. a monsoon climate.

e. rain shadow.


Question 21


Arctic winds blowing over inland reservoirs become saturated and then lose their moisture as they move across land. This is referred to as

Select one:

a. lake effect.

b. eutrophication.

c. a montane successional gradient.

d. a monsoon climate.

e. rain shadow.


Question 22


If the earth was standing still (not rotating), wind directions would

Select one:

a. cease.

b. all run north and south.

c. all run east and west.

d. remain the same since earth rotation does not affect wind directions.

e. all run towards the equator.


Question 23


Trees such as oak and maple and animals such as foxes and deer are found in the

Select one:

a. tropical rain forest.

b. tundra.

c. taiga.

d. chaparral.

e. temperate deciduous forest.


Question 24

In the carbon cycle, carbon is returned to the atmosphere by

Select one:

a. respiration of animals and plants.

b. photosynthesis.

c. evaporation of water.

d. glycolysis.

e. denitrification.


Question 25


Which of the following is NOT required in robust chemical cycling of inorganic nutrients in a natural ecosystem?

Select one:

a. a reservoir for the element in the earth

b. the biotic community and its food chains

c. an exchange pool from which producers draw nutrients

d. weather

e. plants and animals



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