Question

How is the nitrogen taken up by the plants?
I. In the form of inorganic nitrates or nitrites
II. In the form of organic compounds
III. Directly taken up from the atmosphere
A) Only I and II B) Only I and III C) Only II and III D) All I, II and III

Answer 1

$\huge\red{Nitrogen}$ is used by plants in the form of inorganic nitrate or nitrites as well as in the form of organic compound.

A) only 1 and 2

Answer 2

Answer:

nitrate

The nitrogen sources taken up by higher plants are nitrate or ammonium as inorganic nitrogen sources and amino acids under particular conditions of soil composition. Nitrogen assimilation requires the reduction of nitrate to ammonium, followed by ammonium assimilation into amino acids.

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