Biology
10th Edition
ISBN: 9780073383071
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 56, Problem 5A
The presence of one species (A) in a community may benefit another species (B) if
a. a commensalistic relationship exists between the two.
b. The first species (A) preys on a predator of the second species (B).
c. The first species (A) preys on a species that competes with a species that is eaten by the second species (B).
d. All of the choices are correct.
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Which of the following statements is correct regarding the competitive exclusion concept?
a.
multiple species can’t share the exact same niche within a community
b.
the realized niche of a species is different from its fundamental niche.
c.
competition within a population results in the success of the best-adapted individuals.
d.
two species cannot coexist within the same habitat.
The elimination of predators by humans
a. will cause its prey to experience exponential growth until new predators arrive or evolve.
b. will lead to an increase in the carrying capacity of the environment.
c. may increase the population size of a prey species if that prey’s population was being regulated by predation from the predator.
d. will lead to an Allee effect.
Inthe Lotka-Volterra predation model, a prey (host) population in the absence ofpredators would:a.grow exponentially.b.grow logistically.c.grow exponentially, and then crash when it has outstripped its own foodsupply.d.decline to extinction.e.the model makes no assumptions about what happens in the absence ofpredators.
Chapter 56 Solutions
Biology
Ch. 56 - Studies that demonstrate that species living in an...Ch. 56 - Prob. 2UCh. 56 - According to the idea of coevolution between...Ch. 56 - In order for mimicry to be effective in protecting...Ch. 56 - Which of the following is an example of...Ch. 56 - A species whose effect on the composition of a...Ch. 56 - When a predator preferentially eats the superior...Ch. 56 - Prob. 8UCh. 56 - Prob. 1ACh. 56 - The presence of a predatory species a. always...
Ch. 56 - Resource partitioning by sympatric species a....Ch. 56 - Parasitism differs from predation because a. the...Ch. 56 - The presence of one species (A) in a community may...Ch. 56 - Competition is traditionally indicated by...Ch. 56 - Refer to figure 56.9. If the single prey species...Ch. 56 - Prob. 3SCh. 56 - Refer to figure 56.7. Examine the pattern of beak...Ch. 56 - Is it possible that some species function together...
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- Whichof the following statements about damselfish on Jamaican reefs is false?a.Damselfish engage in both intraspecific and interspecific competition.b.Damselfish compete for territories they use for feeding.c.Damselfish attack intruders threatening their young.d.Damselfish without territories die.e.Competition in damselfish is “interference” competition.arrow_forwardThe population cycles of many prey species are often generated by predators anda. mimicry.b. food plants.c. weather patterns.d. water availability.arrow_forwardIf you were to experimentally remove the snake from the community in the diagram below, and you found that frogs dramatically increased in number while most of the other species declined in number then you could conclude that the snake is..? PICTURE ATTACHED A. an introduced species B. a parasite C. keystone species D. co-evolved with the raccoon E. an example of bottom up controlarrow_forward
- 1.) Humans benefit from the presence of certain vitamin Kproducing bacteria that live in the large intestin The bacteria get food and shelter in return . This relationship is an example of A.)parasitism B.) predation C.) commensalism D.( mutualism 2.) A predator-prey relationship exists between the Canada lynx and the snowshoe hare. Lynx that are more successful hunters, are more likely to survive and reproduce, and thus pass on their traits to the next generation. Snowshoe hares that are faster or better at hiding are also more likely to pass on their successful traits From the above information , one can conclude that predator -prey interactions influence the process of A.) inbreeding B.) natural selection C.) artificial selection D.) parasitism 3.) Both intraspecific and interspecific competition affect population growth Which of the following statements about how population growth is affected by competition is correct? A.) Only intraspecific competition increases…arrow_forwardWhich of the following is not true of a population of largepredators in a small reserve?a. The species may disappear from the reserve.b. The species will probably undergo a populationexplosion.c. The species will probably lose genetic diversity.d. The species may overeat its prey, causing a reduction inprey population.arrow_forwardAccording to the competitive exclusion principle, two species cannot exist together if they occupy the same niche. Either they diverge their niches so they can coexist or one species will die out.All of the following are consistent with the principle of competitive exclusion EXCEPT Select one: a. Birds and bats both consume flying insects, but birds are active in the day and bats are active at night. b. Two species that share the same niche will exclude other competing species. c. Different bird species forage for insects in different parts of the same tree. d. When two species of Paramecium are grown in the same medium, one strain will eventually eliminate its competitor.arrow_forward
- Predators that are specialists usually have a population abundance: a. That is usually very small. b. That repeatedly oscillates up and down. c. That is very constant. d. That is mainly affected by climatic factors. e. That may locally go extinct (so depends on immigration).arrow_forwardThe relative abundance of any one species within a community of many species is known as a. species evenness. b. species richness. c. specialization. d. population.arrow_forwardAs the density of a population of crickets increases, the abundance of their food (plants) decreases, and there is a corresponding decrease in the population growth rates of crickets. As adult crickets forage they are observed chirping (vocalization) and share the best feeding locations. This interaction is an example of … a. interspecific interference competition b. intraspecific exploitative competition c. interspecific exploitation competition d. intraspecific interference competitionarrow_forward
- a black bear accidentally stepped on a ladybug beetle, and the beetle survived. What type of ecological species interaction is this? a. amensalism b. commensalism c. neutral d. it is not a species interaction, because this incident does not affect the fitness of bears or ladybug populations e. the answer depends on whether that ladybug's fitness is affected negativelyarrow_forward1. Species interactions shape biological communities through competition for space, food and mates, and also by predation and symbiotic relationships. a. Define intraspecific competition and give ONE example of how species reduce the competition. b. Define interspecific competition and give ONE example. c. Discuss the TWo types of mimicry adaptations that help some species avoid predation and the role of coloration.arrow_forwardPredators are more likely to a. increase the gene pool of the prey population b. increase their population size after the prey population increases c. lead to competition exclusion through natural selection d. diversify the alleles of both the prey and predator populationsarrow_forward
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