What Are the Different Catheter Types?
Vessel A tubular structure that mainly conducts water and inorganic salts in the xylem of a plant; it is composed of a series of highly specialized tubular dead cells whose end walls are interconnected by perforations. Each cell is called a duct molecule. Or duct sections. Bottom-up transport of moisture and inorganic salts.
Plant duct
discuss
- Chinese name
- Plant duct
- Foreign name
- vessel
- Function
- Conducts water and inorganic salts
- Make up
- Composed of dead cells
- Types of
- Cell biology nouns
- Vessel A tubular structure that mainly conducts water and inorganic salts in the xylem of a plant; it is composed of a series of highly specialized tubular dead cells whose end walls are interconnected by perforations. Each cell is called a duct molecule. Or duct sections. Bottom-up transport of moisture and inorganic salts.
- Catheter molecules are living cells in the early stages of development. After maturation, the protoplasts disintegrate and the cells die. During the maturation process, the cell wall is lignified and has different forms of secondary thickening such as ring patterns, threads, ladder patterns, reticles, and pores. At the end wall between two adjacent catheter molecules, a perforated plate is formed after dissolution. In the angiosperms, except for a few families (such as the genus Quercus and Aquatica), there are ducts; ducts also exist in some ferns (such as Selaginella, European fern) and gymnosperms of gymnosperms.
- The catheter is made up of a dead, cell-only cell, and the two cells above and below are connected. It is located in the xylem of the vascular bundle, and its function is very simple, that is, it transports water and inorganic salts absorbed from the roots to all parts of the plant body without energy.
- Catheters and sieve tubes are both the plant's conducting tissue.
- More evolved tree species are generally pore and reticulated ducts; more primitive species are generally ringed and threaded ducts; longer duct molecules have a smaller diameter, and shorter duct molecules have a larger diameter; fiber molecules The length is generally larger than the length of the catheter molecule, and the caliber of the fiber molecule is generally smaller than the caliber of the catheter molecule.