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Xylem in Biological News

Why juniper trees can live on less water

... for bubbles to form in the water-conducting xylem tissues of plants. Water is sucked through xylem tissues under a partial vacuum, "so it's almost ... get into the xylem." The scientists found that xylem tissues of juniper species tend to be reinforced ...

Surprising symbiosis: Glassy-winged sharpshooter eats with friends

... Many insects, such as aphids and cicadas, feed on the sap from a plant's xylem or phloem, pipes that transport water and food within a plant. These ... sharpshooter symbiosis was in the hope that we could find out exactly how xylem can be used as food," Moran explains. "It's terribly poor in nutrients." ...
Xylem in Biological Definition

Phloem

... from the Greek word for "bark". See also xylem . Phloem sap moves from sugar source s to ... movement in phloem is bidirectional, wheras in xylem cells, it is unidirectional (upward). After ... While movement of water and minerals through the xylem is driven by negative pressures (tension) most of ...

Xylem

... vessel elements In vascular plants , the xylem is the tissue that carries water up the root ... , "wood, timber". Together with the phloem , the xylem is one of the two types of transport tissues in plants. The cell walls of xylem cells derive most of their strength from ...

Leaf

... pattern formation through ramification. The veins are made up of: xylem , which brings water from the stem into the leaf. phloem , which ... containing the glucose produced by photosynthesis in the leaf. The xylem typically lies over the phloem. Both are embedded in a dense parenchyma ...

Biological tissue

... , spinal cord and peripheral nervous system Examples of tissue in other multicellular organisms are vascular tissue in plants , such as xylem and phloem . Plant tissues are categorized into the parenchyma , the collenchyma , and the sclerenchyma . ...

Endodermis

... suberin mainly, a waxy substance which prevents water from flowing back into the soil. Water is thus forced toward the center of the root, into the xylem , where it is then transported into the rest of the plant. ...

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Xylem in Biological Dictionary

Xylem

... In vascular plants, xylem is one of the two types of transport tissue, phloem being the other. The word " xylem " is derived from classical Greek ξυλον (xylon), "wood", and indeed the best known xylem tissue is wood, though ... products news ...

Vascular cambium

... cambium is the source of both the secondary xylem and the secondary phloem (outwards), and is ... primary components of vascular tissue are the xylem and phloem. These two tissues transport fluid ... cambium produces vascular tissues, new xylem on ... The cambium which lies inside the ...

Vascular bundles

... in vascular tissue, which exists in two forms: xylem and phloem. Both these tissues are present in a ... primary components of vascular tissue are the xylem and phloem. These two tissues transport fluid ... And The Theory of Steles. Literature ... or xylem of the vascular bundles is associated with ...

Vascular bundle

... in vascular tissue, which exists in two forms: xylem and phloem. Both these tissues are present in a ... primary components of vascular tissue are the xylem and phloem. These two tissues transport fluid ... And The Theory of Steles. Literature ... or xylem of the vascular bundles is associated with ...

Tracheids

... Tracheids are elongated cells in the xylem of vascular plants that serve in the transport ... ... Tracheids have no perforation plates. xylem fibres and xylem parenchyma ... ...

Secondary xylem

... In vascular plants, xylem is one of the two types of transport tissue, phloem being the other. The word " xylem " is derived from classical Greek ξυλον (xylon), "wood", and indeed the best known xylem tissue is wood, though ... ...

Secondary root

... secondary growth but ... As secondary xylem accumulates, the "girth" (lateral ... ... Secondary roots branch from it. xylem - arranged in bundles in a spokelike fashion ... ... roots in a cotton plant ... As secondary xylem accumulates, the "girth" (lateral dimensions) of ...

Secondary phloem

... variously arranged among ... ... phloem and xylem rays--the radial (or horizontal) system of the ... secondary phloem ? ... a. Secondary xylem and phloem are produced through periclinal ...... cell differentiates into either secondary xylem or phloem . ... Usually the secondary ...

Phloem

... The movement in phloem is variable, whereas in xylem cells movement is ... Loading and transport ... the transport of soluble organic material ... xylem is one of the two types of transport tissue, ... cells, including sieve-tube ... Modeling xylem and phloem water flows in trees according to ...

Vascular plants

... and seed-bearing plants , in which the phloem transports sugar and the xylem transports Vascular plants are named from the latin word vasculum, ... the ... The vascular plants have specialized transporting cells xylem (for transporting ... Vascular plant summary with 18 pages of ...

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