______ is the principal source of nitrogen available to crop plants.
A) Organic nitrogen
B) Nitrate
C) Ammonium
D) Glutamine
E) Glutamate
Correct Answer:
Verified
Q30: Which of the following is(are) a product
Q31: The _ symbiosis is an example of
Q32: Which of the following is NOT a
Q33: In the process of nitrogen fixation, _
Q34: In most herbaceous plants grown in nitrate-rich
Q36: In soils where nitrogen is limiting, _
Q37: The role of Nod factors is to:
A)stimulate
Q38: _ is one of the ways in
Q39: Which of the following statements concerning cluster
Q40: Which of the following groups contains species
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