Legumious plants do not require the addition of nitrogenous fertilizers because

Options

A. they can fix up atmospheric nitrogen.
B. of the presence of Rhizobium bacteria in their root nodules.
C. they possess nitrogen in roots, and hence, do not require external intake.
D. Both (a) and (b)

Answer

D

Explanation

Leguminous plants consist of nodules in their roots with Rhizobium bacteria. These bacteria convert atmospheric nitrogen into its corresponding metal nitrates. These nitrates can be readily assimilated by plants. Hence, they do not require additional nitrogenous fertilisers.