COMMUNITY POPULATION IN AN ECOSYSTEM Quiz

What is population dynamics?

• The study of how populations of organisms remain constant over time.

• The study of how populations of organisms change over time.

• The study of how individuals within a population interact with each other.

• The study of how populations of organisms change due to external factors.

Which of the following factors can affect population dynamics?

• Food availability, weather conditions, and social factors

• Education level, income, and political stability

• Geographical location, language spoken, and religious beliefs

• Birth rate, death rate, immigration, emigration, and environmental changes

What is community structure?

• The process of merging multiple communities into one.

• The organization and division of a community into distinct groups or subgroups.

• The physical location of a community.

• The process of building a community from scratch.

Which of the following is an example of a community structure?

• A shopping mall

• A single person

• A book

• A social network

What is population density?

• The number of individuals who migrate to a specific area

• The average age of individuals in a specific area

• A measure of the number of individuals living in a specific area

• The total land area of a specific region

Which of the following factors can influence community structure?

• Competition for resources, predation, environmental conditions, and species interactions

• Geographical location, soil composition, and atmospheric pressure

• Climate change, genetic variation, and human activities

• Migration, symbiosis, and natural disasters

What is a keystone species?

• A keystone species is a species that has a small impact on its environment relative to its abundance.

• A keystone species is a species that has a disproportionately large impact on its environment relative to its abundance.

• A keystone species is a species that has no impact on its environment.

• A keystone species is a species that has a negative impact on its environment relative to its abundance.

Which of the following is an example of a keystone species?

• Sea otter

• Giraffe

• Lion

• Elephant

What is species richness?

• The number of individuals within a species in a given area or ecosystem.

• The number of different genes within a species in a given area or ecosystem.

• The number of different species in a given area or ecosystem.

• The number of different habitats in a given area or ecosystem.

Which of the following factors can contribute to high species richness?

• Diverse habitats, unstable environmental conditions, high levels of disturbance, and low levels of productivity.

• Limited resources, unstable environmental conditions, high levels of disturbance, and low levels of productivity.

• Diverse habitats, stable environmental conditions, low levels of disturbance, and high levels of productivity.

• Homogeneous habitats, stable environmental conditions, high levels of disturbance, and low levels of productivity.