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 11RQ
Species with limited
- logistic
- logical
- experimental
- exponential
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A mess of 40 iguanas moved to a new island which is so large that the carrying capacity is essentially non-existent. The growth rate for these island iguanas was 0.6 and they have a generation time of 2 years. How many iguanas do you expect to find on the island after 6 years? (Show your work. Round your final answer to the nearest whole iguana and clearly indicate your final answer).
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limit on resources
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A man treated his home with a pesticide that kills roaches. The first application of the
pesticide killed 92% of the roaches. Two months later, he applied the same pesticide to
his home again, but the second application killed only 65% of the roaches.
What would best explain the decrease in the effectiveness of the pesticide?
The pesticide is effective only against mature roaches.
The pesticide caused some of the roaches to mutate and metabolize the pesticide.
The pesticide lost its effectiveness over a period of time
The surviving roaches were naturally resistant to the pesticide and that resistance was inherited by their offspring
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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 with limited resources usually exhibit a(n) ________ growth curve. a. logistic b. logical c. experimental d. exponentialarrow_forwardWhich statement about the classic competition experiments involving two Paramecium species is FALSE? The experiment involved interspecific competition. The experiment involved exploitation competition. Each species, when grown alone, exhibited logistic growth. When grown together, the species exhibited logistic growth, but each reached a lower carrying capacity than when it was grown alone.arrow_forwardThe size of the population of a species in an ecosystem is determined by the ___________ factors and _____________ factors.arrow_forward
- 5a. On the following figure to the right, correctly label the name of the population growth pattern that the red line and the blue line demonstrates. 5b. Match the following growth equations to the growth curve by drawing a line between the equation and the curve or placing the name of the growth pattern next to the equation. dN (K-N) rN -- dt K dN = rN dT %| Time (t) → 5b. What does K in this figure represent? How and why do population growth rates change as the population nears K? Population size (N)arrow_forwardResource partitioning among species leads to _________ levels of competition.arrow_forwardGraph Analysis - Predator-Prey Graph Isle Royale National Park on a remote island was established in 1940, and designated a wilderness area in 1976. The only mode of transportation available is by boat or seaplane. Moose first arrived at Isle Royale around 1900. The moose population tends to increase in years with mild winters, early spring green-up, abundant winter forage, low wolf numbers and low levels of tick infestation. Wolves first arrived at the island on an ice bridge from Canada in 1940. Disease has also influenced the wolf population. Between 1980 and 1982, the wolf population declined from 50 to 14, due to canine parvovirus. Predator Prey on Isle Royale 3000 60 2500 50 2000 40 Number of 1500 30 Moose Number of Wolves 1000 20 500 10 1950 1960 1970 1980 1990 2000 2010 Years Moose Wolvesarrow_forward
- 7) The term "preemptive competition" refers to _________________. Question 7 options: when individuals of one species inhibit individuals of another by consuming a shared resource situations where the occupancy by one individual precludes the establishment of others when one organism grows over another, thereby inhibiting access to some essential resource when chemical growth inhibitors inhibit germination and establishment of other species when nonterritorial meetings between individuals negatively affect one or both of the participant speciesarrow_forwardBiotechnological control is the control tactic that only focuses on the modification of organisms to decrease pest population" True or Falsearrow_forwardThere are two types of life strategies used by organisms to survive in their environment. 1. K-selected strategy - growth rate is near the carrying capacity 2. r-selected strategy - growth rate is near biotic potential Match the characteristices below to the life strategy they represent J-cruve Logistic Growth Long life span Few offspringarrow_forward
- Region 2 on the graph above represents ___i___ population growth. Region 3 of the graph is unusual in that it usually shows a slight fluctuation in the form of a ___ii___ curve.arrow_forwardThe three types of curves are also described as: early loss, late loss, and constant loss. Propose an organism that would have a Type 2 curve. Defend your choice by describing this animal's life pattern using the data and growth curve as a guide. (If you are really stuck, use google to look up survivorship curves)arrow_forwardUsing the attached image and chart, calculate the doubling time for a population with the given growth curve. Coordinates are presented as (time, Ln(population).arrow_forward
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