Biodiversity and population in ecosystems

Which of the following best describes biodiversity?

• The genetic makeup of a single species.
• The total number of individuals in a population.
• The number of ecosystems in a geographical area.
• The variety and variability of life forms within a given ecosystem.

What are the three primary levels of biodiversity?

• Genetic diversity, species diversity, and ecosystem diversity.
• Population density, species richness, and ecosystem stability.
• Genetic variation, habitat diversity, and species abundance.
• Species diversity, ecological niches, and genetic variation.

Which of the following best describes the significance of genetic diversity in populations?

• It allows populations to reproduce more quickly.
• It is essential for adapting to changing environments and resisting diseases.
• It ensures that all individuals are genetically identical.
• It has no impact on population health.

How can species diversity be measured?

• By the geographical area occupied by the species.
• By the total biomass of all species in an ecosystem.
• By the number of different species and their relative abundance.
• By the size of the largest species in the ecosystem.

Which of the following statements accurately defines ecosystem diversity?

• The variety of ecosystems in a given area.
• The total biomass of all organisms in an ecosystem.
• The number of species within a single habitat.
• The genetic differences among individuals in a species.

What are the four types of ecosystem services provided by biodiversity?

• Regulating, supporting, educational, and recreational services.
• Provisioning, industrial, cultural, and ecological services.
• Industrial, agricultural, recreational, and cultural services.
• Provisioning, regulating, cultural, and supporting services.

Which of the following factors does NOT influence population dynamics?

• Birth rates and death rates.
• Species interactions and genetic diversity.
• Immigration and emigration.
• Climate and habitat size.

Under ideal conditions, how do populations typically grow?

• Randomly, with no predictable pattern.
• Logarithmically, slowing down over time.
• Exponentially, leading to a rapid increase.
• Linearly, at a constant rate.

Which of the following interactions between populations is characterized by one species benefiting at the expense of another?

• Commensalism
• Predation
• Competition
• Mutualism

What is one effective conservation strategy to protect biodiversity?

• Establishing protected areas like national parks.
• Limiting public access to all natural resources.
• Promoting urban development in natural areas.
• Encouraging the introduction of invasive species.