Ecosystem Skills Assessment

What is biodiversity?

• Biodiversity is the variety of life forms on Earth.

• Biodiversity refers to the number of stars in the sky.

• Biodiversity is a type of weather phenomenon.

• Biodiversity is the study of rocks.

Explain the concept of a food chain.

• A food chain is a random sequence of organisms where each organism consumes any other organism it encounters.

• A food chain is a linear sequence of organisms where each organism consumes the one below it and is consumed by the one above it.

• A food chain is a sequence of organisms where each organism consumes only plants and not other animals.

• A food chain is a circular sequence of organisms where each organism consumes the one below it and is consumed by the one above it.

How does habitat destruction impact ecosystems?

• Habitat destruction impacts ecosystems by disrupting the balance, reducing biodiversity, and affecting food chains.

• Habitat destruction improves food chains in ecosystems

• Habitat destruction increases biodiversity in ecosystems

• Habitat destruction has no impact on ecosystems

Define population dynamics in an ecosystem.

• Population dynamics refers to the study of weather patterns in an ecosystem

• Population dynamics in an ecosystem is the study of how populations of organisms change over time.

• Population dynamics focuses on the geological formations within an ecosystem

• Population dynamics involves the study of chemical reactions in an ecosystem

Why is biodiversity important for ecosystem stability?

• Biodiversity leads to ecosystem imbalance

• Species redundancy has no impact on ecosystem stability

• Biodiversity ensures different species perform various roles, maintaining balance, resilience, and productivity of the ecosystem.

• Ecosystems thrive better with limited species diversity

Provide an example of a primary consumer in a food chain.

• Rabbit

• Lion

• Grasshopper

• Snake

What are some human activities that contribute to habitat destruction?

• Mining, hunting, reforestation

• Deforestation, urbanization, pollution, overfishing, agriculture

• Logging, construction, climate change

• Industrialization, conservation, fishing

Describe the role of decomposers in an ecosystem.

• Decomposers create new organisms in the ecosystem.

• Decomposers reduce the amount of oxygen in the ecosystem.

• Decomposers primarily feed on live organisms in the ecosystem.

• Decomposers break down dead organisms and organic matter, releasing nutrients back into the ecosystem.

How does overpopulation of a species affect an ecosystem?

• Overpopulation of a species can negatively impact an ecosystem by causing resource depletion, increased competition for food and habitat, disruption of the food chain, and ecosystem imbalance.

• Overpopulation of a species can lead to increased biodiversity in an ecosystem.

• Overpopulation of a species can result in a more stable ecosystem.

• Overpopulation of a species has no impact on the ecosystem.

What is the difference between a habitat and a niche?

• A habitat is the physical environment where an organism lives, while a niche refers to the role and position of an organism within its environment.

• A niche is the physical environment where an organism lives

• A habitat is the same as a niche

• A habitat refers to the role and position of an organism within its environment