Anatomy Of Stem

Parenchyma cells are the most common plant cells. Stem cells are the fundamental source of all the bodys tissues the template from which bodily cells are derived.

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Vascular bundles ppt structure and classification structure and composition of xylem ppt.

Anatomy of stem. Stem is the main organ on which the entire weight of plant rests. Internal structure of dicot stem fig. A thin transverse section of a young stem reveals the internal structure when observed under me microscope.

A stem is one of two main structural axes of a vascular plant the other being the root. An outline of the internal structure of the stems is given here. It forms the single celled outermost layer of the stem.

The stem is normally divided into nodes and internodes. Anatomy of monocot stem ppt grass and bamboo classification of meristem ppt. They are found in the stem the root the inside of the leaf and the pulp of the fruit.

As cells die off or are damaged the hundreds of thousands of stem cells in the human body give rise constantly to new tissue. The nodes hold one or more leaves as well as buds which can grow into branches with leaves conifer cones or inflorescences flowers. In view of the fact that wide diversities exist as regards the nature of the plants a few common dicotyledons and monocotyledons have been selected for the study of anatomical structures.

The outer wall of epidermal cells is cutinized. Simple permanent tissue 2. The epidermis is followed by a broad parenchymatous cortex and the vascular tissue in the form of provascular strands is arranged in a ring.

They cannot increase in girth by adding lateral layers of cells as in conifers and woody dicots. The stem and other plant organs are primarily made from three simple cell types. Simple permanent tissue 1.

It bears multi cellular hairs and a few stomata. Adventitious roots may also be produced from the nodes. The anatomy of stem consists of epidermis hypodermis vascular strands etc.

A young stem of pinus is not circular it shows ridges and furrows due to the surrounding leaves. Anatomy of monocot stems m onocot stems such as corn palms and bamboos do not have a vascular cambium and do not exhibit secondary growth by the production of concentric annual rings. Parenchyma collenchyma and sclerenchyma cells.

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