Cotton Leaf (Cross Section)
Gossypium hirsutum
A cross section of a cotton leaf (Gossypium hirsutum C.S.) double-stained with Safranin and Fast Green, highlighting the classic dorsiventral tissue organization of a dicotyledonous leaf. A prominent midrib protrudes abaxially, housing a well-developed crescent-shaped primary vascular bundle composed of lignified xylem vessels oriented toward the adaxial surface and phloem tissue positioned abaxially. The upper and lower surfaces are bounded by single-layered epidermal cells. Beneath the adaxial epidermis, a densely packed layer of elongated palisade mesophyll cells forms the primary photosynthetic zone, transitioning into a loosely organized spongy mesophyll layer with ample intercellular air spaces toward the lower epidermis.
- Category
- Botany & Plants
- Magnification
- 20x
- Stain
- Safranin / Fast Green
- Tags
- cotton leaf, Gossypium hirsutum, cotton leaf cross section, dorsiventral leaf, leaf cross section, midrib bundle, palisade mesophyll, spongy mesophyll, upper epidermis, lower epidermis, xylem vessel, phloem, vascular bundle, intercellular air spaces, plant histology, dicot leaf anatomy
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