Tracheids are elongated or tube like cells with thick and lignified walls and tapering ends, being dead and without protoplasm; they are the main water transporting elements in flowering plants.
Le tracheidi sono cellule allungate o tubuliformi con pareti spesse e lignificate e estremità affusolate, senza protoplasma, e insieme ai vasi sono i principali elementi di trasporto dell'acqua nelle angiosperme.
| Text | Tracheids are elongated or tube like cells with
thick and lignified walls and tapering ends. These are dead and are without protoplasm. The inner layers of the cell walls have THICKENINGS WHICH VARY IN FORM. In flowering plants, tracheids and vessels are the main water transporting elements. |
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