Question

What is special about the roots of a Leguminous plant shown below. How is it
useful to farmers?​

Answer 1

Answer:

Roots of leguminous plants are special because they have several root nodules where nitrogen fixing bacteria lives in. The species of bacteria Rhizobium sp. helps in the transformation of nitrogen gas to usable form, which can be used by the plants$.$

Even though, Nitogen makes up about 78% of Earth's atmosphere, the plants can't use Nitrogen directly from the atmosphere. Instead, they can use Nitrogen only in the form of nitrate($\large{\sf{{NO}^{3-}}}$) and nitrites($\large{\sf{{NO}^{2-}}}$. Soil bacteria helps in fixing the nitrogen into this forms, and the process is known as Nitrogen fixation.

☘ But, Not all plants have roots with root nodules, only the leguminous plants like gram, dal etc provide shelter and food to these kind of bacterias. Hence, these plants are used as a alternative crop during crop rotation because they make soil Nitrogen-rich.

Explore more !!

Nitrogen is very important for all of us in order to make proteins, nucleic acids and several other nitrogenous compounds. The pathway or cycle followed by Nitrogen to revolve the entire ecosystem is Nitrogen cycle.

• When decomposers decompose the waste materials of living organs into ammonia in soil, it is known as Ammonification.
• Then, Soil microbes convert the ammonia Ammonia into nitrites and nitrates which is known to be Nitrification.
• After plants used the nitrogen, this is again returned back to the atmosphere, and this is known as Denitrification.

⚘ Many organisms like decomposers, soil bacterias etc. help in following of Nitrogen cycle and this cycle goes on in a planned and organised way.

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