AP Bio Ecology Questions
Terms in this set (68)
Which of the following is the most abundant carbon-containing compound in the atmosphere of the earth?
Nitrifying bacteria participate in the nitrogen cycle mainly by
converting ammonia to nitrate, which is absorbed by plants
Species that utilize the same source of nutrition within a food web can best be described as
occupying the same trophic level
In decomposers in an ecosystem are
prokaryotes and fungi
Which of the following is an example of Mullein mimicry
Two poisonous frogs with similar color patterns
Temperatures range from approximately -500 C to +250 C; a growing season of 60 days or less
Which of the following best explains why there are seldom more than five trophicc levels in a food chain?
Energy is lost from each trophic level
The dashed line on the graph represents the
carrying capacity of the environment
The graph indicates that the sheep population most likely is
rowing in excess of its carrying capacity, since fluctuations in population size occurred after 1850
Considr a field plot containing 200 kg of plant material. Approximately how many kg of carnivore production can be supported?
A population in unfavorable conditions
C. The population decreasing
Which population is in the process of decreasing?
II the population with oldest members outnumbering the number of offspring
For mot terrestrial ecosystems, pyramids of numbers, biomass, and energy are essentially the same they have a broad base and a narrow top. The primary reason for this pattern is that...
At each step, energy is lost from the system as a result of keeping the organisms alive
Which of the following is not an example of a plant defense against herbivory?
During the carbon cycle, which of the following carbon compounds would be utilized as an energy source by heterotrophs?
How does phosphorus normally enter the atmosphere?
A cow's herbivorous diet indicates that it is
a primary consumer
Ducklings and goslings begin to follow and conregate around whatever moving animate or inanimate object is presented to them within a few hours after hatching. This type of behavior is called
Which of the following statements about the logistic model of population growth is incorrect?
It describes population density shifts over time
Ecology as a discipline directly deals with all of the following levels of biological organization except
the competitive exclusion principle states that
two species with the exact same niche cannot coexist in a community
Toads in a particular population vary inside. A scientist observes that in this population, large males mate with females significantly more often than small males do. All of the following are plausible hypotheses to explain this observation EXCEPT
small females are more likely to mate with small males and large females are more likely to mate with large males
the relationship between legumes and nitrogen fixing bacteria
the entire box shown represents the niche of species A. Species A is biologically constrained from the striped area of its niche by
Probably the mot important factor(s) affecting the distribution of biomes is (are)
day length and rainfall
Which of the following is a density-independent factor limiting human population growth?
The species richness of a community refers to the
number of species
Tropical dry forests may be characterized by
extreme variation in temperature and thorny shrubs (both b and c)
A population is correctly defined as having which of the following characteristics
inhabiting the same general area and individuals belonging to the same species
Lack of water common in summer; seasonal temperature variations; maintained by periodic fires
The type of population growth represented by that portion of the graph line enclosed in the bracket is most accurately termed
Which of the following is an example of Batesian mimicry?
a nonvenomous snake that looks like a venomous snake
All of the following are likely results of land-clearing operations such as deforestation and agricultural activity except
decreased carbon dioxide in the atmosphere
Caused by excessive nutrient input into lakes
In the nitrogen cycle, the transformation of gaseous nitrogen into nitrogen-containing compounds is performed primarily by
CO2 and water vapor re-reflect infrared radiation back toward earth
Which biome is able to support many large animals despite receiving moderate amounts of rainfall
In the food pyramid above, which of the following organisms are herbivores?
An insect that has evolved to resemble a ant twig will probably be able to avoid
Which of the following are important biotic factors that can affect the structure and organization of biological communities?
The most plausible hypothesis to explain why species richness is higher in tropical than in temperature regions is that
Tropical regions have more amiable water and higher levels of solar radiation
All of the following statements concerning characteristics are predator-prey relationships are correct EXCEPT
the production of large numbers of offspinrg within very short periods of time ensures the survival of some prey populations
Which curve best describes survivorship in oysters?
E because almost all oyster offspring perishes when first born
With a few exceptions, most of the food chains studied by ecologists have a maximum of how many links?
All of the following characteristics are typical of an r-selected population except
extensive parental care of offspring
A species of malaria carrying mosquito lives in a forest in which two species of monkeys, A and B, coexist. species A is immune to malaria but species B is not. The malaria carrying mosquito is chief food for a particular kind of bird in the forest. If all of these birds are eliminated suddenly by hunters, which of the following would be the immediate observable consequences?
increased mortality in monkey species b
Carbon dioxide is passed into a solution of bromythymol blue indicator until acid solution turns yellow. A sprig of elodea is then placed into this yellow solution. After a few hours of sunlight, the yellow solution turns blue. The purpose of this experiment is to show that
carbon dioxide is used during photosynthesis
The growing season would generally be shortest in which of the following biomes?
A mature, well established population in favorable conditions
E the straight line
is often determined by energy limitation
Competition for food would probably be most severe between two
closely related species in similar niches
Which of the following characterizes relatively k-selected populations
offspring with good chances of survival
the exponential growth phase of a new population
A the steep curve going up
Evidence shows that some grasses benefit from being grazed. Which of the following terms would best describe tis plant-herbivore interaction?
Monogamy is usually more common among birds and mammals whose young are
born helpless and in the need of much parental care
the sum total of an organism's interaction with biotic and abiotic resources of its enivironoment is called its
competitive exclusion is most likely to occur between two
closely related species occupying the same niche
you are most likely to observe primary succession when you visit a
fairly recent volcanic island
which of the following is true about secondary consumers in an ecosystem?
they are fewer in number than are primary consumers
unlimited population growth is often prevented when death rates increase as population density increases. This is an example of
all of the following are density dependent factors that limit animal populations EXCEPT
Important abiotic factors in ecosystems included which of the following?
temperature water wind (A B and C)
Burning fossil fuels releases oxides of sulfur and nitrogen. Ultimately, these are probably responsible for
the death of fish in norwegian lakes, rain with a pH of 3.0, calcium deficiency in soils
which of the following is an example of aposematic coloration?
stripes of a skunk
In which community would organisms most likely have adaptations enabling them to respond to different photoperiods?
caused excessively high levels of DDT in fish-eating birds
if the larvae of a particular species of mosquito are to survive to the adult stage, the eggs must be laid in the trapped pool of water of the northern pitcher plant. The mosquito larvae provide no apparent benefit or harm to the pitcher plant. This type of interaction is an example of
which of the following statements about energy flow is incorrect?
eating meat is probably the most economical way of acquiring the energy of photosynthetic productivy
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