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- 1) Which of the following defines the niche of a species? The role of a species in its community as well as the conditions it requires and the interactions it takes part in All populations of all species in some area The type of environment in which a species lives The number of species and their relative abundance within a community 2) Which of the following is an example of a biological factor that can affect community structure? Tropical regions support a high species diversity by receiving the most sunlight energy. The high temperatures of desert regions limit which species can live there. A plant species can live only in regions with a suitable level of rainfall. An insect herbivore inhibits the population growth of a tree species. 3)Which of the following prey defensive adaptations involves two or more prey species coming to resemble one another? Camouflage Startle displays…Species in Two Communities Community 1 Community 2 E E E E £ Which statement best describes these two communities in terms of species richness, relative abundance, and biodiversity? о о O Both communities have the same species richness; however, community 2 has a higher relative abundance in all but one species and community 2 also has greater biodiversity than community 1. Community 1 has a dominant species, but has the same species richness, relative abundance, and species diversity as community 2. Both communities have the same species richness and biodiversity; however, community 1 has a higher relative abundance in all but one species when compared to community 1. Community 2 has a higher species richness, relative abundance, and species diversity when compared to community 1. EEEE EEEEE EEEEA rain forest habitat is located in an equatorial area with a warm, wet climate. Nearby is a savanna, where the climate is equally warm but much drier. Species diversity is much higher in the rain forest. Which rain forest habitat characteristic most likely explains this difference? O More disturbances, leading to rapid species turnover O More complex habitat structure, enabling greater food availability O More complex habitat structure, enabling greater niche specialization O Fewer disturbances, leading to rapid population growth of a few species O Fewer open spaces, leading to inability of organisms to leave the habitat
- Which of the following patterns best describes how species richness changes from the arctic to the tropics? Species richness increases from the arctic to the tropics O Species richness remains the same from the acrtic to the tropics Species richness decreases from the arctic to the tropics Species richness increases, then decreases from the arctic to the tropics O None of theseCommunity 1 contains 100 individuals distributed amongfour species: 5A, 5B, 85C, and 5D. Community 2 contains100 individuals distributed among three species: 30A, 40B,and 30C. Calculate the Shannon diversity (H) for eachcommunity. Which community is more diverse?Which of the following statements is/are consistent with the Intermediate disturbance hypothesis? Species diversity is maximized in areas that experience high levels of disturbance Areas with low levels of disturbance will be dominated by K selected species Decades of suppression in California has likely increased diversity in our national forests Areas with intermediate levels of disturbance will have the lowest levels of diversity
- The chart shows the average daily population growth rate and the competitive interaction strengths of seven species of algae. Species Growth rate Competitive interaction strength A 0.052 0.54 В 0.029 0.36 C 0.026 0.38 D 0.064 0.19 E 0.027 0.36 F 0.068 0.13 G 0.009 1.05 Which assemblage of species best fits the assumptions of the lottery model? Select one: a. F and G b. A, C, and F C. A, D, and F d. C, D, and F е. А, В, and G f. B, C, and EYou have determined that a community consisting of 12 species has Shannon Diversity index score of 1.784. What is the species Evenness of this community? 0.34 0.84 0.62 0.71Which of the following species will most likely exhibit metapopulation dynamics? Any K-selected species when an ecosystem is at it carrying capacity and competition is intense A species of dandelion that can grow in a wide variety of soils A species of mussel that has not maximized its fundamental niche A species of lily that can only grow in wetlands that are spread out across the landscape
- The principle of competitive exclusion states that(A) two species cannot coexist in the same habitat.(B) competition between two species always causes extinctionor emigration of one species.(C) two species that have exactly the same niche cannot coexistin a community.(D) two species will stop reproducing until one species leavesthe habitatWhich of the following would be considered a factor affecting species distribution? Habitat selection Oxygen availability Number of births in a year Death rates due to illness Temperature of the environmentWhich of the following attributes of a community would tend to lead to higher species richness? High specialization of species A broad resource spectrum High population size in each species Both a and b Both b and c