Environmental Science 1 Final: Question Preview (ID: 31803)

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When energy is transferred between trophic levels, the amount of available energy lost is about
a) 90 percent b) 50 percent c) 25 percent d) 10 percent
In the example above, one lemur species eats only bamboo shoots. Bamboo shoots contain a high level of cyanide, a toxic chemical. This lemur species has developed a tolerance for a certain amount of cyanide. What do you think will happen over time
a) The level of cyanide in the bamboo population will increase. b) The level of cyanide in the bamboo population will decrease. c) The level of cyanide in the bamboo population will remain the same. d) The level of cyanide in the lemur population will decrease.
If these are present in a new environment, a species is unlikely to become invasive.
a) Predators, parasites, competitors b) Cane toads, kudzu, and zebra ,mussels c) Exotic species d) Symbiotic and commensalist species
In Madagascar, several species of lemur eat bamboo, but each species specializes in one part of the bamboo-one species eats mature bamboo stalks, one species eats bamboo shoots, and one species eats leaves. This is an example of
a) Speciation b) Resource partitioning c) Competition d) Niche partitioning
In extreme cases, eutrophication can lead to extremely low levels of oxygen in a body of water as decomposers break down all the dead producers, a condition called
a) Hypoxia b) Nitrogen fixation c) Respiration d) Photosynthesis
A landslide causes part of a mountainside to fall away, leaving bare rock. In the years immediately following the landslide, the area will experience
a) Primary succession b) Secondary succession c) Tertiary succession d) A climax community
What is the term for organisms, including plants and algae that create their own food?
a) Consumers b) Producers c) Legumes d) Decomposers energy
What products are created by the process of photosynthesis?
a) The sun’s light and energy b) Oxygen and carbohydrates c) Phosphorus and nitrogen d) Carbon dioxide and water
Humans are generally
a) Carnivores b) Herbivores c) Omnivores d) Detritivores
Any being that uses the sun’s energy to create sugars is a
a) Primary producer b) Secondary producer c) Primary consumer d) Secondary consumer
Which best describes evolutionary success?
a) A successful organism possesses adaptive traits and is able to pass those traits on to numerous off spring which then reprodu b) A successful organism possesses traits that are different from traits in the rest of the population and that allow the organi c) A successful organism produces more offspring than others in the population. d) A successful organism possesses adaptive traits and produces more offspring than survive.
Around 65 million years ago, 95 percent of the planet’s species were wiped out, and the age of the dinosaurs ended. Which of the following best explains why we still have numerous species today?
a) The species that exist today were those that were not wiped out when the dinosaurs died. b) The species that exist today evolved from surviving species to fill niches left vacant by the dinosaurs. c) The species that exist today speciated due to separation among different populations. d) The species that exist today have the potential to be as numerous as the ones that went extinct.
In the years immediately after a fire, a forest will experience
a) Primary succession b) Secondary succession c) Tertiary succession d) A climax community
Which of the following best describes a successful individual in evolutionary terms?
a) A successful individual possesses traits that are different from the traits of the rest of the population. b) A successful individual produces many offspring that possess unique traits. c) A successful individual is well adapted to its environment and produces offspring that survive and pass on genes. d) A successful individual will be well adapted to its environment and produce a few high quality offspring.
Two species of finch live in the same environment. Overtime, one develops a larger beak to consume larger seeds, while the other develops a narrow beak to consume more delicate seeds. This is an example of
a) Resource partitioning b) Character displacement c) Coevolution d) Competitive Exclusion
An interaction in which an individual of one species kills and consumes an individual of another is called
a) Predation b) Parasaitism c) Herbivory d) Symbiosis
In the western United States, at the southern edge of their range, moose are sometimes so severely infested with ticks that they die. The tick/moose relationship is best described as
a) Predatory b) Parasitic c) Symbiotic d) Mutualistic
The ultimate source of energy in an ecosystem in which deer eat grass and coyotes eat deer is
a) The grass b) The sun c) The deer d) Chemosynthesis
A beehive depends on pollen from flowers to survive. Flowers depend on bees to pollinate them. Humans tend bee hives, offering the bees a place to live in exchange for some of their honey. The relationship among these three sets of organisms is
a) Parasitic b) Commensalist c) Symbiotic d) Mutualistic
In a food web that consists of grass, mice, deer, coyotes, and hawks, which species is likely to have the greatest biomass?
a) Grass b) Mice c) Coyotes d) Hawks
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