C4 carbon fixation | definition of C4 carbon fixation by Medical dictionary
Kranz anatomy (redirected from C4 carbon fixation)
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Fig. 201 Kranz anatomy. Transverse section through leaf.
Kranz anatomy the special structure of leaves in C4 PLANTS (e.g. maize) where the tissue equivalent to the spongy mesophyll cells is clustered in a ring around the leaf veins, outside the bundle-sheath cells. (The term ‘Kranz’ means wreath or ring in German). The bundle-sheath cells contain large CHLOROPLASTS whereas the spongy mesophyll cells have few if any chloroplasts, unlike their counterparts in C3 plants (see MESOPHYLL).