Ligustrum lucidum Leaf Cross Section Under the Microscope
Ligustrum lucidum Leaf (Transverse Section), Ligustrum lucidum
This is a cross section of a glossy privet leaf stained with fast green. It shows a thick midrib and the layers of a typical dicot leaf, with an extra-thick waxy coating on top.
A transverse section of a glossy privet leaf (Ligustrum lucidum t.s.) stained with Fast Green, highlighting the classic dorsiventral anatomical organization of a mesomorphic dicotyledonous lamina. The V-shaped section clearly demonstrates a prominent midrib region with a centrally located main vascular bundle flanked by expansive lateral leaf blades. The adaxial surface is covered by a thick protective cuticle above a single layer of upper epidermal cells. Immediately beneath, a dense layer of elongated palisade mesophyll cells forms the primary photosynthetic tissue, while the lower abaxial region consists of loosely arranged spongy mesophyll parenchyma with extensive intercellular air spaces. Small lateral vascular veins containing xylem vessels and phloem are distributed throughout the mesophyll.
What to look for
- Midrib: The thick central vein where the leaf blade is folded.
- Cuticle: A thick waxy layer on the upper surface that reduces water loss.
- Palisade mesophyll: Tall, tightly packed cells under the upper epidermis.
- Spongy mesophyll: Loosely arranged cells with air spaces toward the lower surface.
- Vascular bundles: Small veins with xylem and phloem spread along the blade.
At each magnification
Low power (about 4x)
The blade spreading out on both sides of the thick midrib.
Medium power (about 10x)
The main vascular bundle in the midrib and the layers of the blade.
High power (about 40x)
The thick cuticle and individual palisade cells.
Questions and answers
Why do some leaves have a thick cuticle?
A cuticle is a waxy layer that slows water loss. Evergreen leaves like privet stay on the plant all year, so a thick cuticle helps them survive dry or cold weather.
What is the midrib of a leaf?
The midrib is the main vein running down the center of a leaf. It holds the largest vascular bundle, which carries water in and sugar out, and it helps support the leaf blade.
- Category
- Botany & Plants
- Scan magnification
- 20x
- Stain
- Fast Green
- Tags
- Ligustrum lucidum leaf, Ligustrum lucidum, glossy privet, dorsiventral leaf, leaf transverse section, midrib
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