Question

write short note on xylem complex permanent tissue​

Answer 1

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Complex permanent tissue is defined as a collection of structurally dissimilar cells performing a common function or set of functions. They are made up of more than one type of cells. They are of two types xylem and phloem. Xylem is the chief water conducting tissue of the plants.♡

Answer 2

Explanation:

Complex permanent tissue is defined as a collection of structurally dissimilar cells performing a common function or set of functions. They are made up of more than one type of cells. They are of two types xylem and phloem. Xylem is the chief water conducting tissue of the plants.Xylem is the complex tissue as it consists of both parenchymatous and sclerenchymatous cells. It is composed of four elements: 

(a) Tracheids: It is a non-living, elongated cell with tapering ends. The wall is highly thickened with lignin, except at certain circular spots known as pits. 

(b) Vessel: It is a non-living cell with lignified walls. Tracheids and vessels are the main conducting elements in the xylem. 

(c) Xylem parenchyma: It consists of a living cell and performs the function of storage. 

(d) Xylem fibre: It is a non-living, thick-walled cell which provides mechanical support. 

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