Review Questions, Exam 1
1. What are the levels of biological or ecological
2. What types of research approaches do ecologists, evolutionary biologists, and behavioral biologists employ? Why are these different approaches important, and how are they useful?
3. What adaptations do animals have to avoid being eaten? How can predators affect prey individuals, populations, and communities, even if they do not kill the prey?
4. What are the different types of photosynthesis used by plants,
and how are they adaptations to their environment? What is
meant be the term ‘tradeoff’ as applied to adaptations, and what
types of tradeoffs are exhibited in the evolution of
5. What is Shelford’s Law of Tolerance? What does it
say about how organisms can tolerate the physical
environment? Describe adaptions fish have to different types
of physical environments (that is, environments that vary in
salinity or temperature).
6. What physical factors in the environment limit the
distributions of species? Which of these factors determine
the distributions within fields or forests? Across
continents? What are similarities and differences between
physical factors important to species distributions in terrestrial
and aquatic environments? What about in the consideration of
individual species versus biomes?
7. What are the key elements of the carbon cycle, and how does the carbon cycle relate to global warming? How have humans influenced the carbon cycle, and what approaches are there to reducing that influence?
8. What have been ecological effects of global
warming? What are some possible negative effects of
ecological changes caused by global warming?
9. What factors determine a biome? What are the characteristics of major biomes?
10. What conditions are needed for natural selection to occur, and how are these conditions evident in studies of the medium ground finch?11. Define, and give examples of, these types of selection: frequency-dependent; stabilizing, directional, disruptive.