Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 53, Problem 13TYU
Summary Introduction
To determine: The survivorship curve representative of a female elephant bearing a single offspring every two to four years.
Introduction: The survivorship curve refers to the graph depicting the number of individuals who survive in each of the age groups. The survivorship curve is three types, namely Type I or the convex curves, Type II or diagonal curves and Type III or concave curves.
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What are the two main threats to African elephant populations?
African elephants are threatened by poachers, who kill the elephants for their tusks. Both male and female elephants can grow tusks. There are some elephants that are tuskless (do not grow tusks). In the elephant population of Gorongosa National Park, the number of female elephants was monitored for many years. The graphs show the total female elephant population and the percent of tuskless females in that population from 1970 to 2015.
Which of the following describes the trend in the female elephant population from 1970 to 1995 ?
The overall population decreased, and the proportion without tusks increased.
Answer A: The overall population decreased, and the proportion without tusks increased.
A
The overall population decreased, and the proportion without tusks decreased.
Answer B: The overall population decreased, and the proportion without tusks decreased.
B
The overall population increased and then decreased, and the proportion without tusks…
How many lions do you think there are in 1960 and 1975? Why do you think the population is the size you predicted?
Chapter 53 Solutions
Biology (MindTap Course List)
Ch. 53.1 - Define population density and dispersion, and...Ch. 53.1 - What is the difference between population density...Ch. 53.1 - What are some biological advantages of a clumped...Ch. 53.2 - Prob. 2LOCh. 53.2 - Define intrinsic rate of increase and carrying...Ch. 53.2 - Prob. 1CCh. 53.2 - Prob. 2CCh. 53.2 - Prob. 3CCh. 53.3 - Contrast the influences of density-dependent and...Ch. 53.3 - What are three examples of density-dependent...
Ch. 53.3 - What are three density-independent factors?Ch. 53.4 - Contrast semelparous and iteroparous reproduction.Ch. 53.4 - Distinguish among species exhibiting an r...Ch. 53.4 - Prob. 7LOCh. 53.4 - What are the advantages of semelparity? of...Ch. 53.4 - Prob. 2CCh. 53.4 - Prob. 3CCh. 53.5 - Prob. 8LOCh. 53.5 - Prob. 1CCh. 53.6 - Prob. 9LOCh. 53.6 - Prob. 10LOCh. 53.6 - Distinguish between people overpopulation and...Ch. 53.6 - Prob. 1CCh. 53.6 - Prob. 2CCh. 53.6 - How can a single child born in the United States...Ch. 53 - Population _______________ is the number of...Ch. 53 - The per capita growth rate of a population where...Ch. 53 - The maximum rate at which a population could...Ch. 53 - When r is a positive number, the population size...Ch. 53 - In a graph of population size versus time, a...Ch. 53 - The largest population that can be maintained by a...Ch. 53 - Giant bamboos live many years without reproducing,...Ch. 53 - Predation, disease, and competition are examples...Ch. 53 - _______________ competition occurs within a...Ch. 53 - Prob. 10TYUCh. 53 - Prob. 11TYUCh. 53 - Which of the following patterns of cars parked...Ch. 53 - Prob. 13TYUCh. 53 - Prob. 14TYUCh. 53 - Prob. 15TYUCh. 53 - Prob. 16TYUCh. 53 - Prob. 17TYUCh. 53 - Prob. 18TYUCh. 53 - Prob. 19TYUCh. 53 - INTERPRET DATA Consider the age structure diagrams...Ch. 53 - SCIENCE, TECHNOLOGY, AND SOCIETY In what ways has...
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