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Write the anatomical differences between dicot stem and monocot stem.

Last updated date: 23rd May 2024
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Hint: Generally plants are classified as flowering and non flowering plants, and this flowering plants are again of two types, they are monocots where the seeds of this plant have only one cotyledon and dicots where seeds of this plants have two cotyledons.

Complete answer:

Almost all stems of dicots are solidIn the monocots stems are hollow at the center
The hypodermis of the dicot is green in color where they contain structures called collenchyma and fibersIn monocots, the hypodermis is not green in color, and they contain sclerenchyma and fibers.
The internal structures of the dicot stem are arranged in a concentric layersMonocot stems are not arranged in concentric manner.
The ground tissue of the dicot stem is differentiated into different types such as cortex, medulla, pith and rays, pericycle, etc. All of the cells in the ground tissue are of the same type.
In dicot stem vascular bundles are arranged as broken ringsVascular bundles of the dicots are scattered
In phloem parenchyma are presentIn monocots parenchyma is absent in phloem
In dicots pith is well developedPith is not well developed
In this stems epidermal hair may or may not exist.Epidermal hairs are present.
Vascular bundles are very less in number in dicot stems and they have uniform sizeVascular bundles are very numerous in number and various sizes are present.
This dicot stems don’t have bundle sheaths outside the vascular bundlesMonocots have sclerenchymatous bundle sheaths outside.
They have open types of vascular bundles because of the presence of cambium between the xylem and phloem.They have closed type vascular bundles.
These dicot stems have secondary growth resulting in formation of secondary tissues, and periderm formation.They do not show any secondary growth as they have closed type bundled
In this stems vessels are polygonal shape arranged in the form of rows The stem vessels are round shaped and arranged in Y shape formation.
After some days they stop functioning as they become older Vascular tissues remain the same throughout the lifecycle.

Note: In general this dicot and monocots are differ mainly in the arrangement of stems, leaves, flowers, and roots, and few examples of the monocots are pupils, onions and garlic, whereas the dicots examples are sunflower, Cucurbitae, etc.