Question

1. Name the bacteria present in the nodules of roots of the leguminous plants. 2. How do the living organisms meet their nitrogen requirement ? 3. Which bacteria decompose nitrates in the soil into free nitrogen? 4. Which two gases react during lightening to form nitric acid through many steps ? 5. Name the phenomenon that disturbs nitrogen cycle.​

Answer 1

Explanation:

1.Legumes are able to form a symbiotic relationship with nitrogen-fixing soil bacteria called rhizobia. The result of this symbiosis is to form nodules on the plant root, within which the bacteria can convert atmospheric nitrogen into ammonia that can be used by the plant

2.Animals get the nitrogen they need by eating plants or other animals that contain nitrogen. When organisms dNitric oxide (NO), which also contrie, their bodies decompose bringing the nitrogen into soil on land or into ocean water. Bacteria alter the nitrogen into a form that plants are able to us

3.Nitrosomonas and Nitrobacter decompose nitrates in the soil into free nitrogen.

4.Nitric oxide (NO), which also contributes to the natural acidity of rainwater, is formed during lightning storms by the reaction of nitrogen and oxygen, two common atmospheric gases (Equation 3).

5.Scientists have determined that humans are disrupting the nitrogen cycle by altering the amount of nitrogen that is stored in the biosphere. The chief culprit is fossil fuel combustion, which releases nitric oxides into the air that combine with other elements to form smog and acid rain.

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Answer 2

Answer:

1. Name the bacteria present in the nodules of roots of the leguminous plants.

ans. Rhizobia

2. How do the living organisms meet their nitrogen requirement ?

ans. By eating plants or other animals that contain nitrogen.

3. Which bacteria decompose nitrates in the soil into free nitrogen?

ans. Nitrosomonas and Nitrobacter bacteria.

4. Which two gases react during lightening to form nitric acid through many steps ?

ans. Nitrogen and Oxygen.

5. Name the phenomenon that disturbs nitrogen cycle.

ans. Fossil fuel combustion.

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