Matter and Energy in Ecosystems Test 2024

Front

What is nitrogen fixation?

Back

The process of nitrogen gas being converted into ammonium by bacteria.

Front

What can trees do because they are in sunlight?

Back

Trees can take in carbon from the air. The carbon is used to make energy storage molecules.

Front

Which group of organisms in a forest carries out photosynthesis?

Back

Plants.

Front

Why can't plants use nitrogen gas directly from the atmosphere?

Back

The nitrogen atoms are held together by a stable triple bond.

Front

What happens when there is more carbon (in the form of carbon dioxide) in abiotic matter?

Back

More carbon is available to producers for making energy storage molecules.

Front

What is photosynthesis?

Back

The process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

Front

What role do decomposers play in an ecosystem?

Back

Decomposers break down dead organisms, returning nutrients to the soil.

Front

What is the primary source of energy for ecosystems?

Back

The sun.

Front

What is the difference between producers and consumers?

Back

Producers create their own food through photosynthesis, while consumers eat other organisms for energy.

Front

What is the role of nitrogen in plant growth?

Back

Nitrogen is essential for the production of proteins and nucleic acids in plants.