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Preparation And Study Of Transverse Section Of Dicot And Monocot Roots And Stems

To prepare a temporary stained mount of a transverse section of dicot and monocot stem and root to study various plant tissues.

To study the transverse section of a dicot stem, a sunflower stem.

(a) Hypodermis –  It is situated just below the epidermis and consists of 4 to 5 layers of collenchymatous cells. These are cells that have the cellulose deposits on the edges and are living cells. It may possess chloroplast and hence carry out photosynthesis. Function:  It renders mechanical support (b) Endodermis –  Forms the interior most covering of the cortex consisting of a singular row of cells that are densely arranged and barrel-shaped with no intercellular spaces. They are composed of starch grains. (c) General Cortex (Parenchyma) –  Located just under the hypodermis, it consists of several layers of cells that are living having thin walls along with intercellular spaces. It may contain chloroplast and hence becomes photosynthetic. Several mucilaginous canals can also be observed.  Function:  Food storage

In tissue, it forms the central core having a vascular bundle. It comprises of – pericycle, vascular bundles, medullary rays, and pith. (a) Pericycle

T.S. of Dicot Stem – Sunflower Stem

The specimen provided is a section of a dicot stem.  

To study the transverse section of the dicot root, sunflower root.

The T.S shows the following structures:

T.S. of Dicot Root – Sunflower Root

The specimen provided is a section of the dicot root.  

To study the transverse section of monocot stem, maize stem.

The specimen provided is a section of the monocot stem.  

To study of the transverse section of monocot root, maize root.

The transverse section of monocot root depicts the structures as listed below:

The specimen provided is a section of the monocot root.

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