The agent/s which make/s free atmospheric nitrogen available to plants is/are:

  • A
    Lightning
  • B
    Free-living nitrogen-fixing bacteria
  • C
    Symbiotic nitrogen-fixing bacteria
  • D
    All of these

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Similar Questions

Match the following and choose the correct combination from the given options.
Column-$I$Column-$II$
$(A)$ Potassium$(1)$ Constituent of ferredoxin
$(B)$ Sulphur$(2)$ Involved in stomatal movement
$(C)$ Molybdenum$(3)$ Needed in the synthesis of auxin
$(D)$ Zinc$(4)$ Component of nitrogenase

Assertion $A$: Leguminous plants increase soil fertility.
Reason $R$: Azotobacter fixes atmospheric $N_2$.

Identify the mismatched pair.

Select the incorrect statement from the following options.

Ammonia provided to crop plants in the form of urea is industrially fixed by . . . . . . .

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