Population dynamics

What is the importance of genetic diversity in a population?

• It decreases the chances of extinction.

• It increases a population's resilience to diseases and environmental changes.

• It leads to more competition among individuals.

• It reduces the overall adaptability of the population.

How does predation affect population dynamics?

• Predation can control the population size of prey species, influencing the balance of ecosystems.

• Predation has no effect on population dynamics.

• Predation only affects the predator population, not the prey.

• Predation increases the population size of both predators and prey.

What is the role of competition in an ecosystem?

• Competition occurs when organisms vie for the same resources, such as food or space, affecting population sizes and community structure.

• Competition leads to an increase in biodiversity by allowing more species to thrive.

• Competition has no significant impact on population sizes or community structure.

• Competition only affects the physical environment, not the organisms within it.

What is the concept of ecological niche?

• A species' habitat and its physical environment.

• The role and position a species has in its environment, including all interactions with biotic and abiotic factors.

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

• The genetic makeup of a species and its evolutionary history.

What is the difference between biotic and abiotic factors in an ecosystem?

• Biotic factors are non-living components, while abiotic factors are living components.

• Biotic factors include water and temperature, while abiotic factors include plants and animals.

• Biotic factors are living components (like plants and animals), while abiotic factors are non-living components (like water and temperature).

• Biotic factors are the physical environment, while abiotic factors are the biological interactions.

What is the term for when individuals join a population?

• Emigration

• Immigration

• Migration

• Transmigration

What is the study of human populations and population trends called?

• Demography

• Sociology

• Anthropology

• Geography

What type of limiting factor is a disease outbreak?

• Density-independent

• Density-dependent

• Environmental

• Resource-based

How does birth rate affect population growth?

• A higher birth rate decreases the population size, contributing to decline.

• A higher birth rate has no effect on population size.

• A higher birth rate increases the population size, contributing to growth.

• A higher birth rate only affects the age distribution of the population.

What is carrying capacity?

• The total number of species in an ecosystem.

• The maximum number of individuals of a species that an environment can support sustainably.

• The minimum number of individuals required for a species to survive.

• The average number of individuals in a population over time.