Biodiversity and Ecosystem Resilience

The video discusses the importance of biodiversity in ecosystems, emphasizing the need for a variety of species and genetic diversity to ensure ecosystem resilience and species survival. It highlights how different species contribute to ecosystem functions and how genetic diversity within species can protect against threats. The cheetah is used as a case study to illustrate the risks of low genetic diversity. Overall, biodiversity is crucial for the long-term sustainability of ecosystems.

Why is biodiversity crucial for the sustainability of ecosystems?

• It provides a variety of species that contribute to ecosystem functions.

• It reduces the number of species in an ecosystem.

• It allows ecosystems to function without any species.

• It ensures a single species dominates the ecosystem.

What is the relationship between species variety and ecosystem resilience?

• Fewer species and links lead to more resilience.

• Species variety has no impact on resilience.

• More species and links lead to less resilience.

• More species and links lead to greater resilience.

How does species variety contribute to ecosystem sustainability?

• By reducing the number of species.

• By providing different elements to ecosystem functions.

• By ensuring all species perform the same function.

• By eliminating threats to the ecosystem.

What is the impact of having more links between species in an ecosystem?

• It decreases the ecosystem's resilience.

• It increases the ecosystem's resilience.

• It reduces the number of species in the ecosystem.

• It has no impact on the ecosystem's resilience.

How does genetic diversity within a species help in survival?

• It makes all individuals identical.

• It ensures all individuals are affected by the same threat.

• It allows some individuals to survive environmental changes.

• It reduces the number of individuals in a species.

What is a potential consequence of having a population of clones?

• Greater variety of species functions.

• Improved adaptability to environmental changes.

• Higher risk of entire population being wiped out.

• Increased genetic diversity.

Why is genetic diversity measured within populations?

• To assess the likelihood of population survival.

• To ensure all individuals are identical.

• To eliminate genetic differences.

• To reduce the number of individuals in a population.

Why are cheetahs at a higher risk due to their genetic similarity?

• They have a high genetic diversity.

• They are visually different but genetically similar.

• They are visually and genetically diverse.

• They have a low genetic diversity, making them vulnerable.

What is the role of biodiversity in ecosystem functions?

• It reduces the number of functions in an ecosystem.

• It has no impact on ecosystem functions.

• It enhances the functions and sustainability of ecosystems.

• It limits the functions of ecosystems.

What is a key factor in the long-term sustainability of species within ecosystems?

• Identical genetic makeup.

• Low genetic diversity.

• No genetic diversity.

• High genetic diversity.