Population Age Structure Diagrams

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What is the primary reason for the slowdown in population growth during Phase 2 of logistical growth?

Increase in immigration

Decrease in death rate

Increase in birth rate (correct)

Decrease in emigration

Which factor is responsible for controlling the growth of a population based on the density of the population?

Food availability

Space utilization

Number of individuals per unit area (correct)

Protection from predation

What term is used to describe the maximum number of individuals an environment can support?

Sustainable limit

Carrying capacity (correct)

Stabilizing capacity

Population peak

In an urn-shaped population diagram, what does high life expectancy and increased aging of the population indicate?

Low fertility rate Signup and view all the answers

Which type of factors affect the size of a population in response to the density of that population?

Density-Dependent Factors Signup and view all the answers

What happens to the population during Phase 3 of logistical growth?

Population stabilizes and reaches carrying capacity Signup and view all the answers

Which of the following is NOT a density-independent factor affecting population growth?

Competition for resources Signup and view all the answers

In the logistic growth model, what happens to a population's growth rate as it approaches the carrying capacity?

It decreases gradually Signup and view all the answers

Which of the following is a density-dependent limiting factor for population growth?

Disease transmission Signup and view all the answers

What is the maximum population size that an environment can sustain indefinitely?

Carrying capacity Signup and view all the answers

Which of the following survivorship curves is typical for species with high reproductive rates and high mortality in early life stages?

Type III Signup and view all the answers

What is the term used to describe the proportion of individuals in each age group within a population?

Age distribution Signup and view all the answers

Which of the following is an example of a density-independent factor?

A natural disaster like a hurricane or wildfire Signup and view all the answers

What is the primary characteristic that distinguishes K-selected species from R-selected species?

K-selected species exhibit logistic growth, while R-selected species exhibit exponential growth. Signup and view all the answers

Which of the following is an example of a density-dependent factor?

Competition for resources within the same species Signup and view all the answers

What is the carrying capacity of an environment?

The maximum population size that can be sustained indefinitely in a given environment Signup and view all the answers

What is the primary factor that limits the growth of a population in a logistic growth model?

Competition for resources within the same species Signup and view all the answers

Which of the following is an example of a limiting factor for a population?

All of the above Signup and view all the answers