Sieve tube definition: an element of phloem tissue consisting of a longitudinal row of thinwalled elongated... | Meaning, pronunciation, translations and examples
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Aug 08, 2018· Sieve cells are long, slender, conducting cells of the phloem that do not form a constituent element of a sieve tube, but which are provided with relatively unspecialized sieve areas, especially ...
Synonyms for sieve tube in Free Thesaurus. Antonyms for sieve tube. 3 words related to sieve tube: vascular tissue, phloem, bast. What are synonyms for sieve tube?
In plant anatomy, sieve tube elements, also called sieve tube members, are a specialised type of elongated cell in the phloem tissue of flowering ends of these cells are connected with other sieve tube members, and together they constitute the sieve main function of the sieve tube is transport of carbohydrates, primarily sucrose, in the plant (, from the leaves to the ...
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The stylet of a sapping insect, inserted into the sieve tube of a plant, is cut by a laser beam, and the sieve tubetransferable hormone, the herbicide, the insecticide, or the like, is directly inserted thereinto in the method for introducing a material to the plant sieve tube. 例文帳に追加
A definition of the term "sieve cell," which refers to long, slender, tapering cells that form part of the sieve tube, is presented. Estimating the number and size of phloem sieve plate pores using longitudinal views and geometric reconstruction. Bussiéres, Philippe // Scientific Reports;5/16/2014, p1
Expert Answer . Previous question Next question Transcribed Image Text from this Question. apter 2 Quiz 5 In forming the sieve tube, one sieve tube element is connected to another sieve tube element by Multiple Choice 003135 bordered pits pits. perforations < Prev 5of 20 Next >
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The sieve elements are greatly elongated in the direction of transport and are connected to one another to form long sieve tubes. Large pores perforate the end walls of the sieve elements to facilitate flow through the tube. The connecting walls thus look like a sieve, giving the cell type its name.
'Resistivity dramatically increases at the end of each sieve tube when passing through the pores, and it is unlikely that this effect could be described by a simple equation for the pathway from source to sink compartments.' 'Other components, such as sieve tubes and .
Sieve tubes 1. Sieve tubes consist of vertical cells placed one above the other forming long tubes connected at the end walls by sieve pores 2. Sieve tubes have companion cells associated with it 3. In sieve tubes, the sieve areas are confined to sieve plates 4. In sieve tubes, the sieve .
Synonyms for Sieve tube element in Free Thesaurus. Antonyms for Sieve tube element. 3 words related to sieve tube: vascular tissue, phloem, bast. What are synonyms for Sieve tube element?
Phloem has sieve tubes, companion cells, bast fibers as its elements. Phloem originates from meristematic cells in vascular cambium primary phloem from apical meristem and secondary phloem from vascular cambium. Sap components. Xylem sap contains water, inorganic ions and a few organic chemicals. Phloem sap contains water and sugars.
Jan 03, 2019· The key difference between sieve cells and sieve tubes is that the sieve cells are less specialized sieve elements that lack sieve plates and present in seedless vascular plants and gymnosperms while the sieve tubes are highly specialized sieve elements that have sieve plates and present in angiosperms. Another major
Lemon sieve tube necrosis is an inherited disorder of lemon trees in coastal areas. Eureka budlines and Frost Lisbon lemons are affected. In some areas the disease is less severe, and in the San Joaquin and Coachella valleys, lemon sieve tube necrosis does not result in noticeable decline.
Sievetube element definition is a thinwalled elongated living cell that has no nucleus at maturity, is continuous with other similar cells by protoplasmic strands which pass through the perforations of specialized sieve plates, probably functions primarily in the translocation of organic solutes, and is the basic element of the sieve tube.