1.What are the five agents of microevolution? o mutation; gene flow; nonrandom m
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Question
1.What are the five agents of microevolution?
o mutation; gene flow; nonrandom mating; genetic drift; natural selection
o photosynthesis; respiration; mitosis; meiosis; fertilization
o gamete production; mating; fertilization; caring for offspring; formation of herds
2. Is a mule a species? Why or why not?
o no, because it is sterile
o yes, because it is viable
o no, because it closely resembles its parents
3. Ecology is best defined as the study of
o populations
o the rate of population changes
o communities
o organisms as they interact with other organisms and with their physical surroundings
o how populations are restricted by environmental resistance
4. As temperatures in an African savanna increase and rainfall decreases, it would most likely change into
o desert
o tiaga
o tropical rainforest
o temperate forest
o tundra
5. Farmers and horticulturalists bred broccoli, cauliflower, kale, and cabbage from the wild mustard plant through
o speciation
o microevolution.
o artificial selection
o macroevolution
6. What how do anatomy and embryology support the theory of evolution?
o many animals digest food in a similar manner and require the same nutrients during embryonic development
o many animals have internal fertilization
o animals have similarities in overall bone structure and transitional similarities in form during embryonic development
7. A population with relatively more post-reproductive individuals is common in _____-developed countries
o more
o less
8. What is a population?
o all of the organisms that live in a given area
o members of a species that live in a given area
o the portion of animals that can breed
9. If an environment changes rapidly, organisms with ____ will be more likely to survive and reproduce.
o the correct allele frequency
o existing beneficial mutations
o existing neutral mutations
10. Abiotic components of an ecosystem include
o only animal life
o only plant life
o living components only
o nonliving components only
o both living and nonliving components
11. An adverse event can cause loss of an allele from a small population. This is
o founder effect
o migration
o genetic drift
12. The place where an organism lives is called its
o habitat
o biotic role
o ecological niche
o abiotic role
o ecology
13. What is meant by an Evolutionary Stable Strategy in terms of behavior?
o behavior which gains the most food for an individual
o behavior that allows the most reproduction
o behavior that allows many different species to survive
14. What is a keystone species?
o the first organism that populates an area
o the first fossils found in the earliest rock strata
o an organism upon which the entire ecosystem depends
15. Can instinctive behavior be modified by the environment?
o yes, if the environmental influence occurs at an appropriate time
o yes, it changes with any experience
o no, it is innate and cannot be changed
16. What is the environmental impact of strip mining?
o removal of minerals from the soil hampers growth of vegetation
o lack of trees exposes the surface of the earth, promoting tunoff and loss of adjacent trees
o it causes a potential increase in volcanic activity
17. How does deforestation contribute to climate change?
o reduction in forests reduces carbon fixation
o reduction in forests allows the underlying soil to become warmed by the sun
o reduction in forests increases the spread of wind
18. The biosphere is
o land on Earth
o the atmosphere
o the ocean
o the Earth
o fresh and salt water
19. Why can a community support only a small number of tertiary consumer populations?
o there is limited room for them to obtain sufficient sunlight for photosynthesis
o there are limited nesting sites for tertiary consumers, which are typically large
o only a fraction of the energy in each organism is passed on to consumers
20. Which of the following is correct when describing a predator-prey cycle?
o A decline in the numbers of predators causes a decline in the number of prey
o An increase in the number of predators triggers an increase in the number of prey
o A decline in the numbers of prey causes a decline in the number of predators
o An up-and-down cycle will be seen for the prey animal
o A seasonal die-off that will occur without the other species present
Explanation / Answer
1.
mutation; gene flow; nonrandom mating; genetic drift; natural selection
2.
no, because it is sterile
3.
organisms as they interact with other organisms and with their physical surroundings
4.
Desert
5.
artificial selection
6.
animals have similarities in overall bone structure and transitional similarities in form during embryonic development
7.
More
8.
members of a species that live in a given area
9.
existing beneficial mutations
10.
nonliving components only
11.
genetic drift
12.
Habitat
13.
behavior that allows many different species to survive
14.
an organism upon which the entire ecosystem depends
15.
yes, if the environmental influence occurs at an appropriate time
16.
removal of minerals from the soil hampers growth of vegetation
17.
reduction in forests reduces carbon fixation
18.
the Earth
19.
only a fraction of the energy in each organism is passed on to consumers
20.
A decline in the numbers of prey causes a decline in the number of predators
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