Form and Function B.7 Transport (id: 782e82d6a)

本题目来源于试卷: Form and Function B.7 Transport，类别为 IB生物学

[单选题]
The image below is af y1(e:kwbu-p wp8m-dujh455l,tp u8 8limoc n electron micrograph of the stem of the monocot Zea Mays.

What function is performed by the structure labelled X?

A. Transport of water from the roots to the leaves
B. Transport of organic compounds from sources to sinks
C. Transport of organic compounds from sinks to sources
D. Transport of water from sources to sinks


参考答案:  B


本题详细解析:

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