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en.wikipedia.org/wiki/Plant_stem

A stem is one of two main structural axes of a vascular plant, the other being the root. The stem .... In cross section, the vascular tissue does not form a complete cylinder where a leaf gap occurs. Fern stems may have solenosteles or dictyosteles ...

infovisual.info/en/biology-vegetal/cross-section-of-a-stem

Cross section of a stem: axis of a plant. Epidermis: outer layer of the stem. Phloem vessels: tubes that carry sap. Cambium: new parts of the stem.

www.bio.miami.edu/dana/dox/stem.html

A cross section of a generalized, herbaceous dicot stem appears on the left: Note that young, herbaceous stems may have stomates for gas exchange, though ...

study.com/academy/lesson/the-plant-stem-function-types-parts.html

If you were to look carefully at the cross section of a stem, you would find several layers inside, each of which has a different job. From the outside to inside, the ...

www.boundless.com/biology/textbooks/boundless-biology-textbook/plant-form-and-physiology-30/stems-179/stem-anatomy-686-11910

The stem of common St John's Wort (Hypericum perforatum) is shown in cross section in this light micrograph. The central pith (greenish-blue, in the center) and  ...

www.edencroft2.demon.co.uk/deergrasses/stemXsect.html

Trichophorum Identification by stem-section. The two species are strikingly different in cross-section, and there would be few problems of separation..... ..... if not ...

waynesword.palomar.edu/trjune99.htm

Wood rays extend outwardly in a stem cross section like the spokes of a wheel. The rays are composed of thin-walled parenchyma cells which disintegrate after  ...

www.biologydiscussion.com/shoot-system/stems/internal-structure-of-stem-with-diagram/13943

Transverse section of yong stem of Helianthus annuus ... to be composed of two or three layers of fusiform cells, which look rectangular in cross- section.

www-plb.ucdavis.edu/labs/rost/Rice/Stems/internal.html

An understanding of the anatomy of a basic cross section (x.s.) of the stem is an important foundation for following the terminology throughout the rest of the stem  ...

www.pinterest.com/ysnitzer/cross-section

Primrose The stem of this flowering plant conceals a star-like shape in its centre, its outline formed by a black ring of seven tightly-packed vascular cells.