Question

How do plants obtain nitrogen and why do they need it​

Answer 1

Answer:

Plants obtain nitrogen through a natural process. ... Bacteria in the soil convert the nitrogen to ammonium and nitrate, which is taken up by the plants by a process of nitrogen fixation. All plants need nitrogen to make amino acids, proteins and DNA, but the nitrogen in the atmosphere is not in a form that they can use.

Answer 2

Answer:

HOW DO PLANTS OBTAIN NITROGEN ?

The plants can obtain the nitrogen in the following ways -

1. The nitrogen may be fixed by Nitrogen fixing bacteria in the soil and converted to nitrates and nitrites so that it can be easily absorbed by plants.

2. Some leguminous plants have a certain bacteria in their root nodules to fix nitrogen and absorb the fixed nitrogen in the form of nitrates and nitrites.

WHY DO PLANTS NEED NITROGEN ?

Nitrogen is so vital because it is a major component of chlorophyll, the compound by which plants use sunlight energy to produce sugars from water and carbon dioxide (i.e., photosynthesis). It is also a major component of amino acids, the building blocks of proteins.

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