Metabolism of Nitrogen

Which of the following plants has association with Frankia?

Consider the following four statements (a-d) and select the option which includes all the correct ones only:

a) Frankia is an example of filamentous bacteria.
b) Rhodospirillum is an example of purple sulphur bacteria.
c) Acetobacter aceti is an example of facultative anaerobic bacteria.
d) Nitrosomonas and Nitrobacter are examples of nitrogen fixing bacteria.

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

How many molecules of ATP are required to fix one molecule of nitrogen?

Conversion of nitrates to nitrogen is called

Which one of the following statements is correct?

(i) $\alpha$-Ketoglutaric acid $+$${\mathrm{NH}}_4^{+}+\mathrm{NADPH}\stackrel{\mathrm{a}}{⟶}$Glumate $+{\mathrm{H}}_2\mathrm{O}+$ NADP

(ii) 

Frankia produces nitrogen-fixing nodule on

$2{\mathrm{NH}}_3+3{\mathrm{O}}_2\to 2{\mathrm{NO}}_2^{-}+2{\mathrm{H}}^{+}+2{\mathrm{H}}_2\mathrm{O}$
The above stated reaction can be caused by
(1) Nitrosomonas
(2) Nitrococcus
(3) Nitrobacter
(4) Pseudomonas
(5) Thiobacillus

What happens to ammonia formed by ammonification?

Lightening and UV radiation can cause reaction between nitrogen and oxygen, as it produces

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).

Leghaemoglobin is formed for

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

Select the wrong statement:

Leghaemoglobin is:

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