TRACHEIDAL CELLS Meaning and
Definition
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Tracheidal cells are a type of elongated plant cells that are found in the xylem tissue of vascular plants. They are characterized by their long, narrow shape, with tapering ends that resemble a tracheal tube, hence the name "tracheidal." These cells are primarily responsible for the transport of water and minerals throughout the plant, playing a crucial role in maintaining the plant's water balance.
Tracheidal cells possess a thickened secondary cell wall, which contains specialized structures called pits. These pits are essentially microscopic openings in the cell wall through which water can flow. The presence of pits allows for the formation of continuous channels called tracheids, which form a network that facilitates the movement of water upward from the roots to the leaves.
Within the cell wall, tracheidal cells also contain lignin, a complex polymer that provides structural support and protection. Lignin deposition in the secondary cell wall contributes to the cells' rigidity and impermeability, helping prevent the collapse of the tracheids during water transport.
The presence of tracheidal cells in the xylem tissue is a defining characteristic of seedless vascular plants, gymnosperms, and angiosperms. Their efficient water-conducting function enables these plants to thrive in terrestrial environments. Tracheidal cells are vital for the overall functioning of plant life, ensuring the delivery of water and essential nutrients to various parts of the plant, while also contributing to its structural integrity.
Common Misspellings for TRACHEIDAL CELLS
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- t racheidal cells
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- tracheidal cell s
Etymology of TRACHEIDAL CELLS
The word "tracheidal" is derived from the term "tracheid", which refers to a type of elongated, narrow xylem cell found in vascular plants. The term "tracheid" itself comes from the Latin word "trachea", meaning "windpipe" or "tube", which is derived from the Greek word "trakhia", also meaning "windpipe" or "rough artery".
The suffix "-al" is added to "tracheid" to form "tracheidal", signifying that it relates to or is characteristic of tracheids.
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