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.
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1. 題目解析 這道題目主要考察的是植物...
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