Where are these nitrogen fixing organism found? (Select all that apply)

Question

In the leaves of plants

In the digestive tract of animals

In the soil

In the roots of plants

Answer 1

Nitrogen-fixing organisms can be found in the following locations:

• In the digestive tract of animals: Some nitrogen-fixing bacteria, such as those in the digestive systems of certain animals (like ruminants), can assist in nitrogen fixation.

• In the soil: Many free-living nitrogen-fixing bacteria can be found in the soil.

• In the roots of plants: Symbiotic nitrogen-fixing bacteria, such as Rhizobium, are found in the root nodules of legumes and some other plants.

Nitrogen-fixing organisms are not typically found in the leaves of plants.

So the correct selections are:

• In the digestive tract of animals
• In the soil
• In the roots of plants