Name: Meristematic Tissues
Uploaded: 2019-07-19
Duration: 8 min 13 s
Description: Plant growth is indeterminate. This is attributed to the remarkable capacity of division, specific to the tissues called plant meristems. Explore them throug...

Question

Explain the detailed structure of Xylem.

Accepted Answer

Xylem tissue helps in the transport of water and the dissolved substances in the plant. The different components of the xylem include tracheids, vessels, xylem parenchyma and xylem fibres.

(i) Tracheids form the main conductive cells of some non-flowering plants. Water moves from cell to cell through side walls. These cells are elongated cells with tapering ends. These cells with cell wall bear spiral, pitted or bordered-pitted thickenings.

(ii) Vessels are advanced water conductive elements mostly seen in flowering plants. The cell walls are thickened with lignin. These provide rigidity and resistance to the cell wall and prevents it from collapsing during excess transpiration.

(iii) Xylem parenchyma are the living cells of the xylem. They perform functions like secretion and storage.

(iv) Xylem fibres are midway between tracheids and xylem parenchyma. They provide support to the plants.

Explain the detailed structure of Xylem.

Important Questions on Anatomy of Flowering Plants

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