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Most plants can absorb and use which of the following forms of nitrogen directly? A) nitrite...

Most plants can absorb and use which of the following forms of nitrogen directly?
A) nitrite and nitrate
B) nitrate only
C) ammonium and nitrogen gas
D) nitrate and ammonium
Nitrogen fixation consists of
A) the conversion of ammonia to nitrate.
B) the production of ammonium from decomposing organic matter.
C) the conversion of N2 to ammonia.
D) the conversion of N2 to ammonia or nitrate.
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Answer #1

1.Plants can absorb and use nitrate and ammonium which are the different forms of nitrogen directly.Option is D.

2.Here in nitrogen fixation nitrogen which is relatively inert gas plentiful in air, to combine chemically with other elements to form more reactive nitrogen compounds such as ammonia ,nitrates or nitrites.So option is D

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