IB Biology SL B3.1.7 Leaf Gas Exchange Adaptations Topic Practice

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Study B3.1.7—Leaf gas exchange adaptations conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

Question 1

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The image shows a cast of the lower surface of a leaf from a busy Lizzie (Impatiens walleriana) plant as seen under a light microscope with a magnification of 600×600 \times.

Figure for Question 1 — IB Biology SL

On the image, label a guard cell.

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