16 Questions
What is the definition of population in the context of ecology?
A group of members of a species living in the same area
Define ecology based on the provided text.
The study of all relationships among organisms and their abiotic environment
What is the focus of population ecology?
The study of how various factors affect population growth, rates of survival and reproduction, and risk of extinction
What does population size represent?
The total number of individuals in a population
What does population dispersion provide information about?
How species interact with each other
What are the basic mechanisms of evolution mentioned in the text?
Natural selection, mutation, genetic drift, migration
What factors affect population size?
Number of births, number of deaths, immigration, emigration
What type of growth is more likely in an ideal environment?
Exponential growth
What environmental factors limit population growth?
Density-dependent factors (competition for resources, disease, predation) and density-independent factors (natural disasters)
What is the greatest population an environment can sustain called?
Carrying capacity
What are limiting factors in the context of population growth?
Factors that cause population growth to slow down (e.g., food, water, sunlight)
What type of growth did the American bison population in northern Yellowstone National Park experience between 1902 and 1915?
Exponential growth
When does population growth start to plateau?
When the density becomes too high
What type of growth is depicted in the graph showing the explosion of human population over the last 10,000 years?
Exponential growth
What type of growth do you think the human population will experience?
Logistic growth
What tends to have lower population density, a species with larger body size or a species with smaller body size?
A species with larger body size
Test your knowledge on the formation of the universe, earth, life, and the basic mechanisms of evolution such as natural selection, mutation, genetic drift, and migration. This quiz also covers the characteristics, building blocks of life, biodiversity, organization of living things, prokaryotes vs. eukaryotes, and causes of speciation.
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