1. - Consider the following scenario: A drought hits the habitat of a semi-aquatic bird population. All ponds dry up, and fish populations decline. There are two groups of birds in the population that differ in leg length and diet. Long-legged birds eat fish, while short-legged birds eat insects. The drought has little effect on insect populations.
What is the main selective pressure in this scenario?
d. FISH POPULATION
2 - Which statement is accurate about variations?
C. Organisms with variations that give an advantage are more likely to survive.
3 - Consider the following scenario: In a muddy lake environment, some fish have brown scales. Most fish, however, have silver scales. Predators have a harder time seeing the fish with brown scales. Which term best describes the brown scales?
d. advantageous trait
4 - How did the Industrial Revolution impact the population of peppered moths in Britain?
c. The dark-colored moths became more common.
5. After a bottleneck event, the population of rabbits in an area has significantly decreased. A decade later, the population of the rabbits recovers to its original numbers. Which statement is correct about the rabbits?
d. They are less likely to survive environmental changes because of the bottleneck event.
6. Facts or data are types of
a. Evidence
7. Which action is an example of genetic modification (creating GMOs)?
a. making crops that are resistant to pesticides and insects
8. Consider the following scenario: You notice that no two cats at the pet store are exactly alike. Some have spotted fur. Some have striped fur. Some have fur of one solid color. What term is used to describe your observation?
a. variation
9. What statement accurately describes the relationship between variations and fitness?
b. Variations can lead to either an increase or decrease in fitness.
10. What is the name given to an observable characteristic of an organism?
a. phenotype
11.Which variety of mouse is more likely to survive in a dry desert?
b. a mouse that needs less water
12.Which explanation is accurate about the survival and reproduction of a population?
d. If there are a wide variety of traits in a population, it is more likely that some individuals will be able to survive and reproduce.
13.Which term means making sense of information?
b. reasoning
14. Which is most likely an example of selective breeding?
d. raising chickens and having larger ones reproduce in order to produce more meat
15. Why are the gene pools of small populations reduced compared to those of larger populations?
a. inbreeding
16.In an ecosystem, there are two color varieties within a species of toads: brown and green. Over 50 years, the proportion of the population that is green increases from 20% to 50%. Which statement is the most likely to explain this change?
b. The environment changed such that green toads can blend into their surroundings better.
17. In an ecosystem where most flowers are long and bell-shaped, there are two varieties of hummingbird: birds with short beaks and birds with long beaks. What is the most likely hummingbird population composition?
c. more long-beaked hummingbirds
18. Consider the following scenario: You are a scientist observing rodents on the Galapagos Islands. You notice that the introduction of new bird of prey has limited the number of rodents. What term best describes the factor that is limiting the number of rodents the environment can support?
d. selective pressure
19.Consider the following scenario: In an aquatic bird population, some birds have long legs. Other birds have short legs. The food supply is minimal. The birds with long legs are able to wade farther into the water where they can find fish. Over time, the birds with long legs become more common. What scientific term best describes this scenario?
a. natural selection
20. Over time, the variation that gives an advantage
d. becomes more common in the population.
I just took the test, i assure you this is a 100%
-rugrat