In which layer of the leaf does photosynthesis occur?
AThe xylem tissue
BThe waxy cuticle
CThe mesophyll layer
DThe epidermis layer
Answer & Solution
Correct answer: C. The mesophyll layer
1. Leaves consist of several layers of cells.
2. The mesophyll is the middle layer of chlorophyll-rich cells in a leaf.
3. Photosynthesis occurs in that middle layer.
4. Chloroplast-containing cells in plants exist in the mesophyll, which is why the process is sited there.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 8 "Photosynthesis", section 8.1 Overview of Photosynthesis_
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