how many types of elements are found in xylem and phloem? give reason.
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The most distinctive xylem cells are the long tracheary elements that transport water. Tracheids and vessel elements are distinguished by their shape; vessel elements are shorter, and are connected together into long tubes that are called vessels. Xylem also contains two other cell types: parenchyma and fibers.
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There are four different types of cells that make up the xylem tissue. They are:
(i) Tracheids
(ii) Vessels
(iii) Xylem parenchyma
(iv) Xylem fibres
and
Phloem is a complex permanent tissue, which is specialized for the conduction of food and other organic substances. Phloem is also a heterogenous tissue, made up of four different types of cellular elements, namely,
Sieve tubesCompanion cellsPhloem parenchyma andPhloem fibres
(i) Tracheids
(ii) Vessels
(iii) Xylem parenchyma
(iv) Xylem fibres
and
Phloem is a complex permanent tissue, which is specialized for the conduction of food and other organic substances. Phloem is also a heterogenous tissue, made up of four different types of cellular elements, namely,
Sieve tubesCompanion cellsPhloem parenchyma andPhloem fibres
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