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  2. Vessel element - Wikipedia

    en.wikipedia.org/wiki/Vessel_element

    A vessel element or vessel member (also called a xylem vessel) [1] is one of the cell types found in xylem, the water conducting tissue of plants. Vessel elements are found in most angiosperms (flowering plants) and in some gymnosperms such as cycads and Ephedra, but absent in conifers. Vessel elements are the main feature distinguishing the ...

  3. Xylem - Wikipedia

    en.wikipedia.org/wiki/Xylem

    The other type of vascular element, found in angiosperms, is the vessel element. Vessel elements are joined end to end to form vessels in which water flows unimpeded, as in a pipe. The presence of xylem vessels (also called trachea [30]) is considered to be one of the key innovations that led to the success of the angiosperms. [31]

  4. Vascular tissue - Wikipedia

    en.wikipedia.org/wiki/Vascular_tissue

    As the plant grows, new vascular tissue differentiates in the growing tips of the plant. The new tissue is aligned with existing vascular tissue, maintaining its connection throughout the plant. The vascular tissue in plants is arranged in long, discrete strands called vascular bundles. These bundles include both xylem and phloem, as well as ...

  5. Vascular plant - Wikipedia

    en.wikipedia.org/wiki/Vascular_plant

    The xylem consists of vessels in flowering plants and of tracheids in other vascular plants. Xylem cells are dead, hard-walled hollow cells arranged to form files of tubes that function in water transport. A tracheid cell wall usually contains the polymer lignin. The phloem, on the other hand, consists of living cells called sieve-tube members ...

  6. Tracheid - Wikipedia

    en.wikipedia.org/wiki/Tracheid

    Angiosperms have both tracheids and vessel elements. [1] A tracheid is a long and tapered lignified cell in the xylem of vascular plants. It is a type of conductive cell called a tracheary element. Angiosperms use another type of conductive cell, called vessel elements, to transport water through the xylem.

  7. Vascular cambium - Wikipedia

    en.wikipedia.org/wiki/Vascular_cambium

    Each one of these plant hormones is vital for regulation of cambial activity. Combination of different concentrations of these hormones is very important in plant metabolism. Auxin hormones are proven to stimulate mitosis, cell production and regulate interfascicular and fascicular cambium. Applying auxin to the surface of a tree stump allowed ...

  8. Organ (biology) - Wikipedia

    en.wikipedia.org/wiki/Organ_(biology)

    At the same time, a second meaning arose, in reference to a "body part adapted to a certain function". [15] Plant organs are made from tissue composed of different types of tissue. The three tissue types are ground, vascular, and dermal. [16] When three or more organs are present, it is called an organ system. [17]

  9. Sieve tube element - Wikipedia

    en.wikipedia.org/wiki/Sieve_tube_element

    In plant anatomy, there are two main types of sieve elements. Companion cells and sieve cells originate from meristems, which are tissues that actively divide throughout a plant's lifetime. They are similar to the development of xylem, a water conducting tissue in plants whose main function is also transportation in the plant vascular system. [1]