Biology, asked by Pranav7132, 1 year ago

Write short notes on tracheids.

Answers

Answered by daminibhatti07
10
Tracheid, in botany, primitive element of xylem (fluid-conducting tissues), consisting of a single elongated cell with pointed ends and a secondary, cellulosic wall thickened with lignin (a chemical binding substance) containing numerous pits but having no perforations in the primary cell wall. At functional maturity, the cell is dead and empty; its former protoplast is represented, if at all, by a warty layer on the wall. Tracheids serve for support and for upward conduction of water and dissolved minerals in all vascular plants and are the only such elements in conifers and ferns. See also vessel.
Answered by Anonymous
31
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▶⏩ Tracheids:-)


↪➡ Tracheids are long,thin, spindle shaped cells with pits in their thick cell walls.

↪➡ Tracheids are dead cells with lignified walls but they do not have open ends,so they do not form vessels.

↪➡ They are elongated cells with tapering ends.

↪➡ Tracheids help in the flow of water in the plants.

↪➡ Although all the plants have tracheids, they are the only water conducting tissue in non-flowering plants.

↪➡ Water can pass from one tracheids to another through the pits.

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