問題詳情

20. Mycorrhizae enhance plant nutrition mainly by
(A) absorbing water and minerals through the fungal hyphae
(B) providing sugar to root cells, which have no chloroplasts
(C) converting atmospheric nitrogen to ammonia
(D) enabling the roots to parasitize neighboring plants.

參考答案

答案:A
難度:簡單0.8
統計:A(12),B(1),C(0),D(0),E(0)

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