Fall Semester Biology Midterm

Front

What percentage of energy is passed from producers to primary consumers?

Back

Approximately 9% of energy is passed from producers to primary consumers.

Front

Why are decomposers important to an ecosystem?

Back

Decomposers recycle nutrients back into the ecosystem, making them available for producers.

Front

What are abiotic factors?

Back

Abiotic factors are non-living components of an ecosystem, such as water, soil, and oxygen.

Front

What is the threat of invasive species to biodiversity?

Back

Invasive species threaten biodiversity because they have no natural predators and can deplete resources.

Front

What type of organism is found at level 1 of a food chain?

Back

Grass is an example of a level 1 organism, which is a producer.

Front

Define producers in an ecosystem.

Back

Producers are organisms that can make their own food through photosynthesis, such as plants.

Front

What role do primary consumers play in a food chain?

Back

Primary consumers are herbivores that eat producers and are the second level in a food chain.

Front

Explain the concept of a food web.

Back

A food web is a complex network of feeding relationships among organisms in an ecosystem.

Front

What is the significance of biodiversity?

Back

Biodiversity is important for ecosystem stability, resilience, and the provision of ecosystem services.

Front

Define the term 'ecosystem'.

Back

An ecosystem is a community of living organisms interacting with their physical environment.