How is the nitrogen taken up by the plants?I. In the form of inorganic nitrates or nitritesII. In the form of organic compoundsIII. Directly taken up from the atmosphere

How is the nitrogen taken up by the plants?I. In the form of inorganic

1.	How is the nitrogen taken up by the plants?I. In the form of inorganic nitrates or nitritesII. In the form of organic compoundsIII. 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» B. Only I and III