BIO 110 Third Exam (avec anwsers)

BIO 110 Third Exam (avec anwsers) - BIO 110 Third Exam 1)...

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BIO 110 Third Exam 1) Which is the most common kind of dispersion pattern? A) Clumped B) Uniform C) Random D) Hyperdispersed 2) Which is the best definition of an ecosystem? A) An ecosystem consists of many populations of the same species B) An ecosystem consists of many individuals in the same population C) An ecosystem consists of organisms and the environment of which they are a part D) An ecosystem consists of many species all existing in the same area 3) During the past decade the global human population has passed ____ billion people. A) 1 B) 3 C) 6 D) 12 4) The decline in death rates while birth rates remain high in many countries A) Is the result of achieving carrying capacity B) Results in a decline in population growth rate C) Is termed the “demographic transition” D) Is the result of a declining TFR (Total Fertility Rate) 5) In the United States, compared to Iraq, you would expect that A) A greater proportion of the population is less than 20 yrs old
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B) Emigration is causing the population to decline C) The “ecological footprint” is greater D) The TFR rate is greater 6) Total Fertility Rate (TFR) is defined as A) The difference between the birth rate and death rate B) The average number of children a woman is likely to have during her lifetime C) The time required for a population to double D) The rate of population increase 7) Which of the following is considered a condition rather than a resource for green plants? A) Nutrients B) Water C) Sunlight D) Temperature 8) The use by a species of a portion of a resource gradient in an ecosystem is called its A) Carrying capacity B) Niche C) Territory D) Tolerance 9) Species A and B are strong competitors. Species C eats species B but not A. The effect of species C on species A is: A) Negative B) An example of an “indirect effect” C) An example of an obligate mutualism
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D) An example of energy decline in food chains 10) Mutualisms are expected to become increasingly ______ over evolutionary time A) Facultative B) Obligate C) Symbiotic D) Commensal 11) Which is TRUE concerning the fate of energy in food chains? A) The energy available to primary producers should be greater than the energy available to herbivores B) Usable energy is never lost within ecosystem C) There should be more biomass of carnivores than of herbivores in the world’s oceans D) None of the above (all are false) 12) In the model of “growth to carrying capacity” presented in class A) The “per-individual growth rate” (PIG) is density-dependent B) Maximum population growth rates occur at ½ the carrying capacity C) A population above carrying capacity should decline D) All of the above are true 13) Which is FALSE concerning predation? A)
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BIO 110 Third Exam (avec anwsers) - BIO 110 Third Exam 1)...

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