Multiple Choice
What best explains the population cycles of snowshoe hares and lynxes?
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50. Population Ecology
Introduction to Population Ecology
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Which of the following correctly describes the three types of survivorship curves in population ecology?
A
Type A, Type B, and Type C
B
Type X, Type Y, and Type Z
C
Type Alpha, Type Beta, and Type Gamma
D
Type I, Type II, and Type III
Verified step by step guidance1
Understand that survivorship curves are graphical representations that show the number of individuals surviving at each age for a given species or group.
Recognize that there are three main types of survivorship curves: Type I, Type II, and Type III.
Type I survivorship curve is characterized by high survival rates during early and middle life, followed by a rapid decline in survival in later life. This is typical of species that produce fewer offspring but invest more in parental care, such as humans and large mammals.
Type II survivorship curve represents a constant death rate over the organism's life span. This means the likelihood of dying is roughly the same at any age. Examples include some birds and reptiles.
Type III survivorship curve is marked by high mortality rates for the young, with a much lower death rate for individuals that survive to a certain age. This is common in species that produce a large number of offspring but provide little or no parental care, such as many fish and plants.
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Introduction to Population Ecology practice set
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