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Sagot :
Explanation:
The vascular tissue of vascular plants is made up of various kinds of cells and components. The primary components of vascular tissue are the xylem and phloem.
Remember that the xylem transports water and dissolved mineral salts and the phloem transports sap made by cells and by photosynthesis.
Therefore, both the xylem and phloem form the vascular tissue of plants.
Now, the formation of the xylem and phloem is given by the vascular cambium. This vascular cambium produces xylem and phloem cells and originates from procambium that has not completely differentiated during the formation of primary xylem and primary phloem.
Now, Xylem can contain three types of elongated cells: tracheids, vascular elements or vessels (tracheae), and fibers. At maturity, when they perform transport functions, all these cells are dead.
Then, the cells of Xylem are:
- Tracheids.
- Tracheas or Vessels.
The phloem consists of two types of conducting cells: sieve tubes, which are the most characteristic elements, and annex cells.
The cells of Phloem are:
- Sieve cell and sieve tubes.
- Albumin cells.
- Companion cells
We can conclude that the correct answer is:
Answer:The elements that form Phloem are:
sieve elements, phloem fibers, and phloem parenchyma cells.
The elements that form Xylem are:
long tracheary elements, parenchyma, and fibers.
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