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 17RQ
Which of the following statements does not support the conclusion that giraffes are k-selected species?
- Giraffes are approximately 6' tall and weigh 150 Ibs at birth
- Wild giraffes begin mating at 6-7 years of age
- Newborn giraffes are capable of coordinated walking within an hour of birth, and running within 24 hours of birth
- Giraffes rarely give birth to twins.
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In one year, there were 18 males and 34 females. Over the following year, each female gave birth, of which 28 survived. Nine elephants died due to predators. A construction project cleared 50 acres of nearby forested land, causing 5 males and 19 females to immigrate into the experimental area. Competition for females increased, resulting in the emigration of 10 males to a new territory in search of mates.
Which of the following is NOT an example of an r-selected population?
Select one:
a. Mosquito lifespan is between 42 and 56 days for females and 10 days for males.
b. Minnows spawn 16 to 26 times per year, yielding up to 10 000 eggs per female.
c. Houseflies are very tolerant of a wide range of environmental conditions and thus have a broad range of habitat.
d. Algae are capable of reproducing asexually and sexually to take advantage on the conditions of the environment.
During mating season, male rams compete with each other for access to females. This describes (please just select one answer the one the best fits)
intersexual selection
intrasexual selection
the direct benefits model
Hamilton-Zuk hypothesis
Fisherian sexual selection
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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