The interdependent evolution of similar organisms whose members freely interbreed in the wild is called coevolution. T True F False Question 2 When one living organism feeds on another, the organism serving as the food source is called the A decomposer B predator. consumer. D prey. Question 3 Interspecific competition A) is interaction among individuals in different ecosystems. Boccurs among organisms that are the same species. coccurs among organisms that are different species. is a form of symbiosis. Question 4 Which is narrower? A Realized niche of an organism B Habitat of an organism Fundamental niche of an organism D all of the given choices Question 5 When the population density of prey increases, A predators are more likely to encounter the prey B the predator numbers exceed those of the prey All of these the population density of the predators immediately increases Question 6 When two similar species end up living together in a dynamic equilibrium, it is usually through A symbiosis B fundamental niche competitive exclusion D resource partitioning Question 7 A community is A a collection of different species that interact with each other in a specific location Ball members of one species in a particular location all autotrophs within the same environment D all the abiotic features of an environment Question 8 Which of the following represents the sequence of primary succession on a bare rock? A grasses shrubs poplars – pine trees – oak trees B crabgrass â€“ horseweed â€” weeds – pine trees-hardwood trees C crabgrass â†’ weeds â€“ oak trees – pine trees D lichensmosses grasses shrubs trees W Question 9 Beavers and corals are examples of_ A invasive species B foundation species keystone species dominant species Question 10 Keystone species A live in symbiotic relationships with at least two other species. B break down dead organisms into simple inorganic molecules.
Care particularly influential in determining the species composition of an ecosystem. are recent introductions into a new ecosystem. Question 11 Which of the following statements is TRUE? A Predation exerts a selective force on the prey, favoring characteristics that reduce the probability of capture. B Predation only favors the prey with the evolution of more efficient ways to escape predators. Predation only favors the predator with the evolution of more efficient ways to catch prey. D Predation exerts a selective force on the predator, favoring characteristics that reduce the probability of prey capture. Question 12 When the relative abundance of an organism is used to determine the overall health of an environment, that organism is referred to as an) – Species diversity Question 13 Which of the following statements about secondary succession is TRUE: A It leads to a stable, persistent climax community. B It typically begins with lichens. It reaches completion in about 15 years. D It occurs in areas lacking vegetation where soil is present. Question 14 Trees of the same species in a dense forest must compete for available sunlight. This is an example of A intraspecific competition. B interspecific competition. predation. D mutualism. Question 15 Which of the following is a true statement about niches? A A realized niche is usually larger than a fundamental niche. B An organism’s niche includes its habitat and role in the community. An organism’s niche is inflexible. D Ecological niches exclude abiotic factors.
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