Nitrogen Cycle

Front

What is the nitrogen cycle?

Back

The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including nitrogen gas, nitrates, and ammonia, in the environment.

Front

What do plants absorb from the soil in the nitrogen cycle?

Back

Plants absorb nitrates from the soil.

Front

What does nitrogen fixation refer to?

Back

Nitrogen fixation is the process of converting nitrogen gas from the atmosphere into usable compounds like ammonia or nitrates.

Front

What is assimilation in the context of the nitrogen cycle?

Back

Assimilation is the process by which plants absorb nitrates through their roots and incorporate them into their tissues.

Front

What role do decomposers play in the nitrogen cycle?

Back

Decomposers break down dead organic matter, releasing nitrogen back into the soil as ammonia.

Front

What is denitrification?

Back

Denitrification is the process by which nitrates in the soil are converted back into nitrogen gas, returning it to the atmosphere.

Front

What is the main source of nitrogen in the atmosphere?

Back

The main source of nitrogen in the atmosphere is nitrogen gas (N2), which makes up about 78% of the air.

Front

What is the significance of nitrates for plants?

Back

Nitrates are essential nutrients for plants, as they are a primary source of nitrogen needed for growth and development.

Front

What is the difference between nitrogen fixation and denitrification?

Back

Nitrogen fixation converts nitrogen gas into usable compounds, while denitrification converts nitrates back into nitrogen gas.

Front

What is a phosphate in the context of the phosphorus cycle?

Back

Phosphate is a phosphorus compound that plants absorb from the soil and is essential for their growth.