State three differences between tracheids and trachea.
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Tracheids Trachea
(c) Larger (c) shorter
(d) Narrow lumen (d) wider lumen
(e) Less thickened wall. (e) more thickened wall
(f) Less efficient in conduction (f) more efficient in conduction
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racheid Vessel
They have comparatively narrow diameter. They have comparatively wide diameter.
They have very few large pits. They have numerous small pits.
They are imperforated cells. They are perforated cells.
Walls are more thickened with narrow lumen. Walls are less thickened with wide lumen.
They are conducting element of pteridophytes and gymnosperms. They are conducting element of angiosperms.
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