Question

4. Life-history patterns Different species—or even different populations of the same species living in different environments—tend to have a consistent general life pattern. This pattern describes how long it takes offspring to grow up, how old they are when they reach reproductive age, how long they are reproductive, and their typical maximum life span. All these events are collectively referred to as the species' biotic potential pattern. Information about a species' death rate at be summarized by a survivorship curve. The horizontal axis represents different ages in the life of an individual of that species. The vertical axis indicates the number of offspring that survive a specific age to make it to the next age. Taken together, the curve shows how many individuals of different ages remain alive over time. Number of survivors (logarithmic scale) Age The adjacent survivorship curve represents a curve for an unknown species. Which of the following statements correctly describes the characteristics of a species that might produce this curve? This species has a steady rate of survival versus death. Offspring are not more likely or less likely to die than adults are. In other words, roughly the same number of individuals die at every age in the species. This species has few offspring at a time and thus is able to put a lot of effort into raising them. The offspring have a high survival rate, and the highest death rates are in older adults. This species has many offspring at a time and does not put in much, if any, parental effort. Many of the offspring die early, and few survive to older ages. The survivorship curve that best models the life history of a species that is using a K-selective strategy of reproduction is a curve. Which of the following species typically uses a K-selective strategy in raising its offspring? Grass Human Mouse

4. Life-history patterns

Different species—or even different populations of the same species living in different environments—tend to have a consistent general life pattern. This pattern describes how long it takes offspring to grow up, how old they are when they reach reproductive age, how long they are reproductive, and their typical maximum life span. All these events are collectively referred to as the species' biotic potential pattern.

Information about a species' death rate at be summarized by a survivorship curve. The horizontal axis represents different ages in the life of an individual of that species. The vertical axis indicates the number of offspring that survive a specific age to make it to the next age. Taken together, the curve shows how many individuals of different ages remain alive over time.

Number of survivors (logarithmic scale)
Age

The adjacent survivorship curve represents a curve for an unknown species. Which of the following statements correctly describes the characteristics of a species that might produce this curve?

This species has a steady rate of survival versus death. Offspring are not more likely or less likely to die than adults are. In other words, roughly the same number of individuals die at every age in the species.
This species has few offspring at a time and thus is able to put a lot of effort into raising them. The offspring have a high survival rate, and the highest death rates are in older adults.
This species has many offspring at a time and does not put in much, if any, parental effort. Many of the offspring die early, and few survive to older ages.

The survivorship curve that best models the life history of a species that is using a K-selective strategy of reproduction is a curve. Which of the following species typically uses a K-selective strategy in raising its offspring?

Grass
Human
Mouse

4. Life-history patterns

Different species—or even different populations of the same species living in different environments—tend to have a consistent general life pattern. This pattern describes how long it takes offspring to grow up, how old they are when they reach reproductive age, how long they are reproductive, and their typical maximum life span. All these events are collectively referred to as the species' biotic potential pattern.

Information about a species' death rate at be summarized by a survivorship curve. The horizontal axis represents different ages in the life of an individual of that species. The vertical axis indicates the number of offspring that survive a specific age to make it to the next age. Taken together, the curve shows how many individuals of different ages remain alive over time.

Number of survivors (logarithmic scale)
Age

The adjacent survivorship curve represents a curve for an unknown species. Which of the following statements correctly describes the characteristics of a species that might produce this curve?

This species has a steady rate of survival versus death. Offspring are not more likely or less likely to die than adults are. In other words, roughly the same number of individuals die at every age in the species.
This species has few offspring at a time and thus is able to put a lot of effort into raising them. The offspring have a high survival rate, and the highest death rates are in older adults.
This species has many offspring at a time and does not put in much, if any, parental effort. Many of the offspring die early, and few survive to older ages.

The survivorship curve that best models the life history of a species that is using a K-selective strategy of reproduction is a curve. Which of the following species typically uses a K-selective strategy in raising its offspring?

Grass
Human
Mouse

Added by Lourdes P.

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