The Nitrogen Cycle

Question 1

How is Nitrogen recycled by animals?

Answer 1

Animals get nitrogen by eating protein in other plants and animals. Excess nitrogen is removed by excretion (urea in urine)

Question 2

How is Nitrogen recycled by plants and animals after death?

Answer 2

After death, plants and animals are decomposed by decay organisms (bacteria and fungi) breaking down proteins intro Nitrogen compounds (such as nitrates)

Question 3

What are the other stages of the Nitrogen Cycle?

Answer 3

Nitrogen in the air can be removed by nitrogen-fixing bacteria found in the soil and in the rood nodules of plants like clover and beans (leguminous plants. The Nitrogen is then converted into compounds

Question 4

What happens after Nitrogen is then converted into compounds?

Answer 4

Nitrates are taken up by plant roots and converted to proteins.

Question 5

What is Denitrification?

Answer 5

It’s a process where bacteria in the soil break down Nitrates into Nitrogen