Q6 of 39 Page 63

With regard to the Biological Nitrogen Fixation by Rhizobium in association with soybean, which one of the following statement/ statements does not hold true.

Nitrogenase is sensitive towards oxygen molecule, such that to protect nitrogenase Rhizobium nodules also has an oxygen molecule scavenger called as Leg-Heamoglobin. Hence it does not require oxygen for it’s functioning.

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4

Which one of the following symptoms is not due to manganese toxicity in plants?

 5

Reaction carried out by N2 fixing microbes include

a. 2NH3 + 3O2 2NO2– + 2H+ + 2H2O (i)


b. 2NO2- + O2 2NO3- (ii)


Which of the following statements about these equations is not true


 7

Match the element with its associated functions/roles and choose the correct option among given below

Options


 8

Plants can be grown in (Tick the incorrect option)