Metabolism of Nitrogen in Plants

Which one of the following produces nitrogen fixing nodules on the roots of Alnus ?

During the process of nitrogen fixation, ammonia is first oxidized into …A… by …B…

Choose the correct option for missing words A, B, C and D:

I. In (A), ammonia reacts with (B) and forms glutamic acid.

II. Amides are transported to other parts of the plants via (C).

III. Along the transpiration stream, the nodules of soya-bean export the fixed nitrogen as (D).

Denitrification is carried by bacteria:

Which is not free-living ${\mathrm{N}}_2$-fixing bacteria

Nitrogen fixation in root nodules of Alnus is brought about by

Leghaemoglobin is:

Nitrogen fixing nodules are present on the roots of Alnus are inhabited and produced by

Ureides are preferred forms for storage and transport of nitrogen in

Nitrogenase enzyme found in root nodules in legumes contains

Select the correct statements from the given

(a) Nitrogenase is a heterodimeric protein.

(b) Roothairs curl by action of nitrogenase and plant 'nod factors'.

(c) During symbiotic ${\mathrm{N}}_2$ fixation ATP is provided by legume plant

Cycas and Azolla plants are associated with

How many electron and protons are required to fix a dinitrogen?

Leghemoglobin is found in which one of the following organisms?

Which is not true for nitrogenase enzyme in root nodules in legumes?

$\mathrm{A}+{\mathrm{NH}}_4^{+}+\mathrm{B}\stackrel{\mathrm{C}}{⟶}$ Glutamate $+{\mathrm{H}}_2\mathrm{O}+\mathrm{D}.$

Complete the above conversion with suitable option for $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$.

Mark the odd statement for ureides.