Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 19, Problem 10RQ
Species that have many offspring at one time are usually:
a. r-selected
b. K-selected
c. both r- and K-selected
d. not selected
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Chapter 19 Solutions
Concepts of Biology
Ch. 19 - Figure 19.2 As this graph shows, population...Ch. 19 - Figure 19.6 If the major food source of seals...Ch. 19 - Figure 19.11 Age structure diagrams for rapidly...Ch. 19 - Which of the following methods will provide...Ch. 19 - Which of the following is best at showing the life...Ch. 19 - Human populations have which type of survivorship...Ch. 19 - Species with limited resources usually exhibit...Ch. 19 - The maximum growth rate characteristic of a...Ch. 19 - The population size of a species capable of being...Ch. 19 - Species that have many offspring at one time are...
Ch. 19 - A forest fire is an example of ________...Ch. 19 - A country with zero population growth is likely to...Ch. 19 - Which type of country has the greatest proportion...Ch. 19 - Which of the following is not a way that humans...Ch. 19 - The first species to live on new land, such as...Ch. 19 - A symbiotic relationship where both of the...Ch. 19 - When an invasive species alters the community...Ch. 19 - Describe how a researcher would determine the size...Ch. 19 - Describe the growth at various parts of the...Ch. 19 - Give an example of how density-dependent and...Ch. 19 - Describe the age structures in rapidly growing...Ch. 19 - Describe the competitive exclusion principle and...Ch. 19 - Describe the potential effects when a keystone...
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- A true species in mauritius failed to reproduce because of the extinction of a fruit eating bird. Which one of the following was that bird? A) Dove B) Dodo C) Condor D) Skuaarrow_forwardIntraspecific competition reduces allelic diversity by Select one: a. relieving predator pressure on the prey population b. allowing K-selected species to have a selective advantage over r-selected species c. creating a competitive advantage to certain alleles d. allowing two different species occupying the same niche to compete for resourcesarrow_forwardWhich curve on the graph represents a species that produces high numbers of offspring with little paternal care? a) Graph 1 b) Graph 2 c) Graph 3 d) Graph 4arrow_forward
- Which of the following is associated with the reproductive potential of a species? a. few offspring b. many offspring c. semelparity d. fecundityarrow_forwardIn populations subjected to high levels of predation a. individuals should invest little in reproduction so as to maximize their survival. b. individuals should produce few offspring and invest little in any of them. c. individuals should invest greatly in reproduction because their chance of surviving to another breeding season is low. d. individuals should stop reproducing altogether.arrow_forwardSecondary contact after divergence rarely results in? A. creation of a hybrid zone B. formation of a new species C. the rapid decline of both populations D. extinction of one populationarrow_forward
- Birds with average-sized wings survive storms better than those with longer wings or shorter wings. This illustrates _____. a directional selection b disruptive selection c the bottleneck effect d stabilizing selectionarrow_forwardGradually, fewer low-growing plants will sprout and more shrubs and trees will begin to grow. The process above could be described as _____________ succession or ____________ competition a. seconday; intraspecific b. primary; interspecific c. primary; interspecific d. seconday; intraspecificarrow_forwardWhich statement about prezygotic barriers is false? A.They can arise from the evolution of the structure of sexual organs. B.They can arise from the specific interaction of plants with insect pollinators. C.They can arise from mate selection behaviors. D.They can arise from low fertility of hybrids.arrow_forward
- Primates are examples of: a. density-dependent species b. density-independent species c. r-selected species d. K-selected speciesarrow_forwardWhy does the aquarium trade contribute to the introduction of nonnative species? a. Exotic species can escape or be released into local ecosystems. b. Aquarium owners do not always understand how ecosystems interact. c. Nonnative fish are shipped worldwide for aquariums. d. All of the above Please select the best answer from the choices provided A B C Darrow_forwardWhich of the following is an example of an r-selected species? a. Whales b. Elephants c. Humans d. Most insects e. Most tropical rainforest treesarrow_forward
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