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Some bacteria live in the roots of plants like soybeans and peas. What is the role of these bacteria in the nitrogen cycle?

a.to absorb nitrogen-containing compounds from the soil
b.to release free nitrogen into the atmosphere
c.to break down nitrogen-containing compounds in dead organisms
d.to convert free nitrogen into usable nitrogen

Respuesta :

The correct answer is (d) To convert free nitrogen into usable nitrogen.

The nitrogen present in the soil is not directly used by the bacteria. It can be used only when the nitrogen is converted into usable form. These bacteria convert  atmospheric nitrogen into ammonia, then nitrite which is then converted into nitrate. This nitrate is used by the roots of the plants like soybeans and peas. This is the role of bacteria present in the roots of the plant to convert atmospheric nitrogen into usable form that can be used by plants.


ajinems

The role of these bacteria that lives in the roots of plants like soybeans and peas is to convert free nitrogen into usable nitrogen. That is option D.

What is Nitrogen cycle?

Nitrogen cycle is a continuous process by which nitrogen gas is converted to organic substances and back to nitrogen in nature.

There are four stages of nitrogen cycle which includes:

  • Nitrogen fixation,

  • Decay,

  • Nitrification, and

  • Denitrification.

The Nitrogen fixation stage is nitrogen-fixing bacteria that are found at the roots of plants which are capable of transforming nitrogen gas from the atmosphere into fixed nitrogen compounds, such as ammonia, that are usable by plants.

Therefore, the role of these bacteria that lives in the roots of plants like soybeans and peas is to convert free nitrogen into usable nitrogen.

Learn more about nitrogen cycle here:

https://brainly.com/question/11662775

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