Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 45, Problem 14RQ
Species that have many offspring at one time are usually:
- r-selected
- K-selected
- both r- and K-selected
- not selected
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Which of the following is not a characteristic of r-selected species.
O mature early
O mature late
O more offspring
O smaller offspring
Assortive mating generally leads to lower diversity because;
Assortive mating actually increases diversity
Individuals choose to mate with individuals who are dis-similar to themselves
Individuals choose to mate with other similar individuals
Individuals choose to mate later in life
What characteristics are common to r-selected species?
Choose All That Apply
Rapid development and early reproductive maturity
Small intrinsic growth rates
Small offspring and significant parental care
Large numbers of offspring per reproductive event
Chapter 45 Solutions
Biology 2e
Ch. 45 - Figure 45.2 As this graph shows, population...Ch. 45 - Figure 45.10b If the major food source of the...Ch. 45 - Figure 45.16 Age structure diagrams for rapidly...Ch. 45 - Which of the following methods will tell an...Ch. 45 - Which of the following is best at showing the life...Ch. 45 - Humans have which type of survivorship curve? Type...Ch. 45 - How is a clumped population distribution...Ch. 45 - Which of the following is associated with...Ch. 45 - Which of the following is associated with multiple...Ch. 45 - Which of the following is associated with the...
Ch. 45 - Species with limited resources usually exhibit...Ch. 45 - The maximum rate of increased characteristic of a...Ch. 45 - The population size of a species capable of being...Ch. 45 - Species that have many offspring at one time are...Ch. 45 - A forest fire is an example of regulation....Ch. 45 - Primates are examples of: density-dependent...Ch. 45 - Which of the following statements does not support...Ch. 45 - Which of the following events would not negatively...Ch. 45 - A country with zero population growth is likely to...Ch. 45 - Which type of country has the greatest proportion...Ch. 45 - Which of the following is not a way that humans...Ch. 45 - The first species to live on new land, such as...Ch. 45 - Which type of mimicry involves multiple species...Ch. 45 - A symbiotic relationship where both of the...Ch. 45 - Which of the following is not a mutualistic...Ch. 45 - The ability of rats to learn how to run a maze is...Ch. 45 - The training of animals usually involves...Ch. 45 - The sacrifice of the life of an individual so that...Ch. 45 - Why are polyandrous mating systems more rare than...Ch. 45 - Describe how a researcher would determine the size...Ch. 45 - The CDC released the following data in its 2013...Ch. 45 - Why is long-term parental care not associated with...Ch. 45 - Describe the difference in evolutionary pressures...Ch. 45 - Describe the rate of population growth that would...Ch. 45 - Describe how the population of a species that...Ch. 45 - Give an example of how density-dependent and...Ch. 45 - Describe the age structures in rapidly growing...Ch. 45 - Since the introduction of the Endangered Species...Ch. 45 - Describe the competitive exclusion principle and...Ch. 45 - Jaguars are a keystone species in the Amazon....Ch. 45 - Describe Pavlov’s dog experiments as an example of...Ch. 45 - Describe the advantage of using an aural or...
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- Species that have many offspring at one time are usually: a. r-selected b. K-selected c. both r- and K-selected d. not selectedarrow_forwardWhich is an example of disruptive selection? Group of answer choices Drug resistance increases with each generation; the resistant bacteria survive, and the nonresistant bacteria get killed off. Swiss starlings usually lay four or five eggs, thereby increasing their chances of more offspring. Over time, Equus developed strength, intelligence, speed and durable grinding teeth. Panay island snails mainly have two different phenotypes, black and white shells.arrow_forwardWhich of these outcomes are examples of reproductive isolation? Select all that apply. Individuals of different species are physically compatible and can engage in sex Hybrid individuals cannot produce offspring Hybrid individuals or their offspring have similar fitness to the original species Reproduction occurs at different times Mating occurs but fertilization does not occurarrow_forward
- One example of coevolution is when speciation within one group of organisms drives speciation within another group of organisms with which it interacts. The term for this type of coevolution is which of the following? Mutualism Antagonism Cospeciation Cooperation Conflictarrow_forwardWhich of the following is true of a peacock's tail: It is a result of intersexual selection It is an example of sexual dimorphism in the species It is a result of intrasexual selection all of the abovearrow_forwardWhat happens to a species that is pushed outside its fundamental niche? It evolves and adapts It experiences rapid population growth It goes extinct It speciates into a new speciesarrow_forward
- The picture below shows ungulates gathering under a tree during the heat of the day. In the morning and in the evening when it is cooler they move into the field to graze. Select the type of environmental variation the ungulates experience. Ospatial variation temporal variation climactic variation O phenotypic variationarrow_forwardMost organisms' niches are controlled by Genetic trait for adaptive characteristics Luck Behavior learned from others in their social groups Lessons learned from parents The predators and competitors they encounterarrow_forwardSpecies that have many offspring at one time are usually:a. r-selectedb. K-selectedc. both r- and K-selectedd. not selectedarrow_forward
- Which of the following is not true for a critically endangered species? Expression of deleterious alleles and increased homozygosity increases mortality of young, and inbreeding depression leads to reduced offspring fitness The individuals of the species which have declined to low numbers are still a genetically open system Loss of some allele from the species causing loss of genetic diversity with consequent inability to respond rapidly to selection Reduction of population breeding ability due to increased relatedness through the action of incompatibility mechanisms in plants or behavioural difficulties in animalsarrow_forwardWhich type of selection best describes the shift in peppered moth from the light form to the dark form following the industrial revolution? Directional Stabilizing Disruptive 58arrow_forwardWhich of the following decreases genetic variation in a population? Check all that apply. Founder effect V Mutations Meiosis OSexual reproduction Bottleneck effectarrow_forward
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