Ground tissue

Ground tissue is one of the three types of plant tissue systems, the other two being the vascular tissue and dermal tissue. It is the tissue that makes up most of a young plant and fills the space between the vascular and dermal tissues. The ground tissue system can be divided into three types based on the nature of the cell walls: parenchyma, collenchyma, and sclerenchyma.

Parenchyma

Parenchyma cells are the most common type of cells in plants. They are involved in many functions, including photosynthesis, storage, and tissue repair. Parenchyma cells have thin cell walls and are usually loosely packed, allowing for the exchange of gases.

Collenchyma

Collenchyma cells provide support for the plant, especially in regions of new growth. They have unevenly thickened cell walls and are usually found just beneath the epidermis.

Sclerenchyma

Sclerenchyma cells also provide support for the plant. They have thick, lignified cell walls and are often dead at maturity. There are two types of sclerenchyma cells: fibers and sclereids.

Functions of Ground Tissue

The ground tissue system plays a crucial role in the growth, photosynthesis, and physical protection of the plant. It also aids in the transport of water and nutrients from the roots to the leaves and the storage of carbohydrates and water.

See Also

• Plant tissue
• Vascular tissue
• Dermal tissue
• Cell wall
• Photosynthesis

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  Cross-section of stem showing ground tissue
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  Collenchyma cells
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  Sclerenchyma fibers
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  Sclerenchyma sclereids
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  Sclereids in Dionysia kossinskyi