問題詳情
20. In the land plants, matrotrophy refers to the
(A) attraction of sperm by the egg.
(B) nourishment of the zygote by the archegonium.
(C) transport of sugars through the placenta.
(D) division of the zygote within the venter.
(E) movement of sugars through plasmodesmata.
參考答案
答案：99
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中