本题目来源于试卷: SL/HL Topic B 3.1 Gas exchange，类别为 IB生物学
[单选题]
3. Which of the following *8 v zymoadrf(3jdv ,bkdj30( bmq-,u areilk.*q66g8jh lhyy39 kt:l nq adaptations of the spongy mesophyll for the intake of cah:l 66 q8in3tygk .hllk 9*qjyrbon dioxide to photosynthetic leaf cells?
I. A water layer on the cell surface.
II. Air spaces between the mesophyll cells.
III. The presence of stomata.
IV. A large surface area.
A. All of the above
B. II and IV only
C. I, II and III only
D. I, II and IV only
参考答案: D
本题详细解析:
暂无
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