In any food web the group of organisms that is

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Biology
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Chapter 53 / Exercise 6
Biology
Martin/Solomon
Expert Verified
41. In any food web, the group of organisms that is responsible for fixing atmospheric carbon are the: a.primary carnivores b.detritivores c.herbivores d.secondary consumers e.primary producers
42.As a recent graduate from UMBC and a budding ecologist you decide to study the population dynamics of mosquitoes during the summer months in Florida, a habitat where mosquitoes breed year round. Using your life table skills you calculate the per capita density independent growth rate of this population at 2.5, based on weekly population estimates of a cohort you cleverly tagged with radioactive isotopes. Assuming density independent population growth, if the population size is 100,000 right now, what will be the population size next week?
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Biology
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Chapter 53 / Exercise 6
Biology
Martin/Solomon
Expert Verified
43. In which biome would you be most likely to find species that are adapted to fire?
44. Dark leaf pigments and low growth forms are thought to be adaptive for life in which biome?
45. The following description most accurately applies to tropical rainforest biomes: a) hot, smelly and bug infested b) low biodiversity, soil is poor in nutrients c) moderate rainfalls, extremely hot climates d) open canopy, soil is rich in nutrients e) closed canopy, soil is poor in nutrients
46. In your first job with the Nature Conservancy you are assigned to design a study to determine why amphibian populations have declined in some regions of the Eastern Shore of Maryland but not others. You decide to measure adult survival rates of three target species for five years in different regions (those that have been reported to have declining amphibian populations and those that are reported to have stable amphibian population sizes). You present your results to your boss, telling her that if you found no difference in adult survival rates in each area and that the original reports on the decline of amphibians must be mistaken. Your boss tells you to clean out your office, turn in your birkenstocks and go retake Biol 142. What was wrong with your population monitoring plan that might have led you to the wrong conclusion?

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