Biodiversity

What is the difference between a food chain and a food web in terms of species diversity?

• A food chain has higher species diversity than a food web because it consists of multiple interconnected food chains.

• A food web has higher species diversity than a food chain because it consists of multiple interconnected food chains, allowing for more interactions among species.

• A food chain and a food web have the same level of species diversity as they both represent the same ecological relationships.

• A food web is simpler than a food chain and therefore has lower species diversity.

What is an example of a keystone species and its impact on biodiversity?

• Sea otter, which helps maintain ecosystem structure and biodiversity

• Dolphin, which is known for its intelligence and social behavior

• Shark, which is a top predator but does not significantly affect biodiversity

• Frog, which is an indicator species but not a keystone species

How can conservation efforts help maintain biodiversity?

• By promoting urban development and industrial growth.

• By preserving ecosystems and the species that inhabit them.

• By increasing pollution and habitat destruction.

• By encouraging overfishing and hunting of endangered species.

What role do producers play in an ecosystem?

• Producers convert sunlight into energy through photosynthesis, forming the base of the food web and providing energy for herbivores.

• Producers are organisms that consume other organisms for energy and nutrients.

• Producers are responsible for decomposing organic matter in the ecosystem.

• Producers are animals that primarily feed on plants and other producers.

Why is low biodiversity a concern for an ecosystem?

• It can lead to increased competition among species.

• It can cause a collapse of the food web, leading to the extinction of herbivores and other dependent species.

• It results in more resilient ecosystems that can withstand changes.

• It allows for a greater variety of species to thrive.

What factors can threaten biodiversity in an ecosystem?

• Habitat destruction

• Natural disasters

• Seasonal changes

• Soil fertility

What is the concept of ecological niche?

• A species' physical appearance and characteristics.

• The role and position a species has in its environment, including its habitat, resource use, and interactions with other species.

• The geographical distribution of a species across the globe.

• The evolutionary history and lineage of a species.

How does climate change affect biodiversity?

• It can lead to increased species populations and diversity.

• It can alter habitats, disrupt species interactions, and lead to shifts in species distributions, ultimately threatening biodiversity.

• It has no significant impact on ecosystems or species.

• It promotes the growth of invasive species, enhancing biodiversity.

How does biodiversity contribute to ecosystem resilience?

• By providing a wider range of species that can adapt to changes and disturbances, ensuring the ecosystem can recover.

• By reducing the number of species in an ecosystem, which simplifies interactions.

• By increasing competition among species, leading to stronger dominance of a few.

• By creating more habitats that are less stable and more prone to collapse.

What is the significance of species interactions in a community?

• They are irrelevant to community dynamics.

• They help in maintaining the balance and health of a community.

• They only affect individual species, not the community as a whole.

• They are only important during the breeding season.