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Draw transverse sections of dicot vs monocot stems and explain annual growth rings formation in temperate trees for NEB Botany.
Secondary growth in dicot stems is a staple 4-mark question in NEB Botany.
Intrafascicular and interfascicular cambium merge to form a continuous cambial ring. It cuts off secondary xylem toward the interior and secondary phloem toward the exterior at a 8:1 ratio, resulting in annual rings and heartwood/sapwood differentiation.
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