Form and Function B.7 Transport (id: 9b5e89a3d)

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 diagram shows sucrose being pyma; d+hpb 8 ms(71oyg, a2gz85rz e0x;t56wg 9 ubdk f-iksjpassively loaded into the sieve tube unaided, before being transportezg w0;k8k6j5 u xbf5itsrde9 -d around the plant.

Which structure is labelled X?

A. Plasmodesmata
B. Proton pump
C. Co-transporter protein
D. Stomata


参考答案:  A


本题详细解析:

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