正确答案: B

初生壁细胞

题目：花药绒毡层细胞来自( )。

解析：B

查看原题 点击获取本科目所有试题

举一反三的答案和解析：

[单选题]该区域河流水文特征是

径流年际变化小

[单选题]What relation is the woman to Mr.Cooper?

His secretary.

[单选题]What is the main purpose of the passage?

to warn us not to get lost in the fantasy world.

[单选题]Whenever I met her, _________ was fairly often, she greeted me with a sweet smile.

which

[单选题]罂粟目在系统分类上属于( )。

多心皮类

[单选题]柑橘(桔)属常见种的鉴别特征之一是( )。

叶轴翅有或无，宽或窄

[单选题]皮孔是表皮上的通气组织。( )

错误

[单选题]角苔属植物为具背腹之分的叶状体。( )

正确

[单选题]叶基二裂片向两侧外指，称( )。

戟形