异型世代交替是指在植物的生活史中,       在形态构造上显著不

异型世代交替是指在植物的生活史中,       在形态构造上显著不同。

A .孢子囊和配子囊  B .孢子体和配子体   C .孢子和配子    D .精子和卵细胞

答案

B


解析:

异形世代交替是由配子体和孢子体两种外部形态和内部结构上不同的植物体进行交替。配子体是单倍体,孢子体是二倍体。

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