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Multiple Choice
Chimpanzees have a relatively low birth rate. They care for their young, and most chimps live a long life. The chimp survivorship curve would look like __________.
A
a line that slopes gradually upward
B
a line that drops steeply at first and then flattens out
C
a line that slopes gradually downward
D
a horizontal line
E
a relatively flat line that drops steeply at the end
Verified step by step guidance
1
Understand the concept of a survivorship curve: A survivorship curve is a graph that represents the number of individuals in a population that survive to various ages. It helps in understanding the life expectancy and mortality rates within a species.
Identify the characteristics of chimpanzees: Chimpanzees have a low birth rate, care for their young, and most live a long life. These traits suggest that they have a high survival rate during the early and middle stages of life.
Relate these characteristics to the types of survivorship curves: There are three main types of survivorship curves: Type I, Type II, and Type III. Type I curves are characterized by high survival rates in early and middle life, followed by a steep decline in older age.
Determine which type of curve fits chimpanzees: Given their high survival rate until old age, chimpanzees would likely exhibit a Type I survivorship curve, which is relatively flat and drops steeply at the end.
Visualize the curve: Imagine a graph where the x-axis represents age and the y-axis represents the number of surviving individuals. For chimpanzees, the line would remain relatively flat for most of the lifespan and then drop steeply as they reach old age.