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DIFFERENCE BETWEEN DICOT STEM AND MONOCOT STEM

Prepared By : SARAH MIGDADY

Supervised by: Muhammad Wahsheh

epidermal hairs(tricomes)

Trichomes are epidermal protuberances located on aerial parts of plant, that protect plant from excess transpiration, high temperature.

the monocot stem does not contain trichomes while the dicot stem contains trichomes.

epidermal hairs

Silica deposition

Silicon is the most abundant element in the earth's crust. Plants absorb silicon in the form of silicic acid from the soil. which is deposited as amorphous hydrated silica (SiO2.nH2O) in the plant body, although most plants do not accumulate silica noticeably.

Silica deposition

The epidermis of the monocot stem does not undergo silica deposition while the epidermis of the dicot stem undergoes silica deposition.

Hypodermis

The outermost layer of cells in the plant cortex, lying immediately below the epidermis.

While the hypodermis of the monocot stem is sclerenchymatous, the hypodermis of the dicot stem is chlorenchymatous.

Hypodermis

ground tissue

ground tissue conducts the basic functions of photosynthesis, food storage, and support. Ground tissue is the least differentiated of the three major tissues

ground tissue

The ground tissue of the monocot stem is not differentiated while the ground tissue of the dicot stem is differentiated into steler and extra-steler tissue.

medullary ray

are sheets or ribbons of cells running from the inside of the plant to the outside. The function of medullary rays is to carry chemicals which fight invasion by insects

In addition, the monocot stem does not contain medullary rays while medullary rays are present in the dicot stem.

medullary ray

Vascular Bundles

Number of Vascular Bundles

Another difference between monocot stem and dicot stem is that monocot stems contain numerous vascular bundles while dicot stems contain 4 to 8 vascular bundles.

Vascular Bundles

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