Biology: Science for Life with Physiology (5th Edition)
5th Edition
ISBN: 9780321922212
Author: Colleen Belk, Virginia Borden Maier
Publisher: PEARSON
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Chapter 14, Problem 1CTS
Summary Introduction
To analyze:
The factors that limit fruit flies in the culture bottle and the similarity as well as difference between culture bottle and population on the earth.
Introduction:
The
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The pesticide DDT was widely used in the 1940s as a method of insect control. In the late 1950s the first DDT-resistant mosquitoes were discovered, and eventually DDT-resistant mosquitoes were found globally. When DDT is used now, the development of DDT resistance in mosquito populations occurs in months rather than years.Which of the following best explains the observations concerning DDT resistance in mosquitoes?
a) The proportion of DDT-resistant mosquitoes in a population remains constant due to the metabolic costs of DDT utilization
b) Natural selection favors DDT-resistant mosquitoes that are already present in a population when DDT exposure occurs.
c) DDT is a chemical signal that delays normal reproductive cycles in many mosquito populations.
d) Competition for limited resources causes mosquitoes to migrate to geographical areas that have richer supplies of DDT.
The pesticide DDT was widely used in the 1940s as a method of insect control. In
the late 1950s the first DDT-resistant mosquitoes were discovered, and
eventually DDT-resistant mosquitoes were found globally. When DDT is used
now, the development of DDT resistance in mosquito populations occurs in
months rather than years.Which of the following best explains the observations
concerning DDT resistance in mosquitoes? *
nd 2
school
The proportion of DDT-resistant mosquitoes in a population remains constant due to
the metabolic costs of DDT utilization
DDT is a chemical signal that delays normal reproductive cycles in many mosquito
populations.
Natural selection favors DDT-resistant mosquitoes that are already present in a
population when DDT exposure occurs.
Competition for limited resources causes mosquitoes to migrate to geographical
areas that have richer supplies of DDT.
A population of 1.492 finches is introduced to a rainforest. Over the next year, the
finches showa death rate of…
1a: Based on the table used above, what is the net reproductive rate?
Round up or down to 2 decimals and use a zero before the decimal point (Ex: 0.02).
1b: Based on the table used above, what is the generation time?
1c: Based on the table used above, if this population of rodents grew exponentially, what would the intrinsic growth rate be?
Chapter 14 Solutions
Biology: Science for Life with Physiology (5th Edition)
Ch. 14 - Prob. 1LTBCh. 14 - Prob. 2LTBCh. 14 - Prob. 3LTBCh. 14 - Prob. 4LTBCh. 14 - According to the graph shown here, the carrying...Ch. 14 - All of the following are density-dependent factors...Ch. 14 - In contrast to nonhuman populations, human...Ch. 14 - Populations that rely on stored resources are...Ch. 14 - The current carrying capacity of Earth for the...Ch. 14 - Prob. 10LTB
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