Stem Cross Section

After use clean the blade immediately to prevent rust.

Stem cross section. When the stem is viewed in cross section the vascular bundles of dicot stems are arranged in a ring. Central part of the stem. Axis of a plant.

The epidermis also may contain stomata for gas exchange and multicellular stem hairs called trichomes. Woody part of the stem. It shows the following plan of arrangement of tissues figs.

Includes a demonstration of staining th. The stem is square in cross section. The outside of the stem is covered with an epidermis which is covered by a waterproof cuticle.

A very young stem of leonurus sibiricus of family labiatae should be selected because secondary growth commences unusually early in this plant. Note that young herbaceous stems may have stomates for gas exchange though the leaf is the main site of gas exchange with many morestomates than the stem. In monocot stems the vascular bundles are randomly scattered throughout the ground tissue.

Then you can stain the cross section of plant stems with methylene blue or eosin y or both and start looking them under the microscope. When the stem is viewed in cross section the vascular bundles of dicot stems are arranged in a ring. In monocot stems the vascular bundles are randomly scattered throughout the ground tissue.

Let them float on the surface of the water. Transverse sections are taken and stained suitably for the internal structure. In plants with stems that live for more than one year the individual bundles grow together and produce the characteristic growth rings.