In nitrogen cycle the step ‘Nitrogen assimilation' involves -
(A) Conversion of ammonium compounds in ammonia by bacteria
(B) Conversion of atmospheric nitrogen into nitrites and nitrates by blue green alg:
(C) Conversion of ammonia into nitrites by bacteria present in the soil
D) Absorption of nitrogen by the plants in the form of nitrates to prepare
amino acids
Answers
Answer:
(A) Nitrification is the conversion of ammonia (NH3) to nitrate (NO3–). It is usually performed by soil living bacteria, such as nitrobacter. This is important because plants can assimilate nitrate into their tissues, and they rely on bacteria to convert it from ammonia to a usable form.
(b) Cyanobacteria are very important organisms for the health and growth of many plants. They are one of very few groups of organisms that can convert inert atmospheric nitrogen into an organic form, such as nitrate or ammonia.
(c) The nitrification process requires the mediation of two distinct groups: bacteria that convert ammonia to nitrites (Nitrosomonas, Nitrosospira, Nitrosococcus, and Nitrosolobus) and bacteria that convert nitrites (toxic to plants) to nitrates (Nitrobacter, Nitrospina, and Nitrococcus).
(d) Nitrogen assimilation in plants. Plants absorb nitrogen from the soil in the form of nitrate (NO3−) and ammonium (NH4+). ... Nitrogen is transported from the root to the shoot via the xylem in the form of nitrate, dissolved ammonia and amino acids.
Answer:
which one is answer the of these questions