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Given the following descriptions, identify the feature(s) that correctly describe(s) tracheids and vessel elements.
X. Both are non-living
Y. Perforation plates are present in vessel elements but absent in tracheids
Z. Both are highly efficient in water conduction
The widened, perforation-containing, water-conducting cells found only in angiosperms are called:
Endodermis is the _______ layer of root cortex.