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Bio Sample Exam
Terms in this set (24)
A food web
depicts the complex interconnection of food chains in a given ecosystem
"As a result of competition"
one species may go extinct
both species may divide resources and survive
one or both populations are likely to decline
biodiversity may increase
(all of the above are possible outcomes)
Which is NOT necessarily true of a keystone species?
it is the most abundant species in the community
"If climate change completely eliminates a predator that is a keystone species, how will the ecosystem change?"
The ecosystem will be irreversibly damaged
Which of the following actions has been found to have the greatest impact on reducing your carbon/ecological footprint?
Have fewer children
What is the most likely reason orcas suddenly began preying upon sea otters in the 1990s in Alaska?
"The preferred prey of orcas has been drastically reduced, forcing them to find other food sources"
"The carrying capacity of a population is found at the top of a ___ curve, and the factors determining the carrying capacity are density ___."
Which processes regulate the natural carbon cycle on our planet?
photosynthesis, respiration, decomposition
An ecological footprint
measures the amount of land and water required by a population to live and the amount of land and water required to absorb that population's waste
A niche describes
the space, environment, and resources necessary for a species to survive and reproduce
Which of the following statements is/are true?
Atmospheric CO2 increase is correlated with the Industrial Revolution, increased ocean acidification, and global temp increase
The rate of species extinction has increased rapidly in the past 100 years because of
Increased hunting, fishing, habitat destruction, increased pollution
Why would a non-developed country with a low per-capita footprint have a similar total footprint to a more developed country?
The non-developed country has a larger population
Which of the following is in order from simplest to most complex?
Individual community population ecosystem
A decrease in a population's resources will
decrease the carrying capacity
"A small tall grass prairie consists of 10,000 kg of grass. How many kg of secondary consumers can this support?"
Which of the following statements is true?
An average monthly temperature increase of as little as 1degree C can cause plants to bloom several days earlier than average
Which of the following organisms are in the highest trophic level in the community on Isle Royale?
A population distribution pattern that best indicates a species is territorial is:
The primary difference between an ecosystem and a community is:
An ecosystem consists of the community plus abiotic factors
97% of scientists in the field agree that humans are responsible for global climate change
A population limited by environmental factors would be an example of linear growth
Which term can be used to describe a protist?
This mechanism is NOT responsible for random changes in allele frequency in the gene pool of a population
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