13. Mycorrhizae, present for most plant species, generally do not help roots with the uptake of________.
(A) nitrogen
(B) carbon
(C) phosphate
(D) water
(E) sugar

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統計： A(0), B(1), C(0), D(0), E(0) #3061385

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#6528068

Mycorrhizae, present for most plant species, generally do not help roots with the uptake of________. 



(E) sugar
0
0