Question

Select the correct statements from the given
(a) Nitrogenase is a heterodimetric protein
(b) Root hairs curl by action of nitrogenase and plant 'nod factors'
(c) During symbiotic $N_2$ fixation ATP is provided by legume plant

• A. (b) & (c)
• B. (a) & (c)
• C. Only (c)
• D. (a) & (b)

Answer 1

The correct option is A (b) & (c)

b.Rhizobium infects the root of the leguminous plant, legumes release flavonoid. When exposed to flavonoid rhizobium release nodulation factor that curls the root hair through which rhizobium enters the root hair.

c. Biological nitrogen fixation occurs atmospheric nitrogen is converted to ammonia by an enzyme called Nitrogenase.

So, the correct answer is 'A'.