Question

write the note on xylem​

Answer 1

Answer:

Xylem is complex tissue as it consists of both parenchymatous and sclerenchymatous cells. It is composed of four elements:

(a) Tracheid: 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.

Answer 2

Answer:

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.

Explanation:

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