Summer Wood Can Be Distinguished from Spring Wood Because Summer

question 16

Multiple Choice

Summer wood can be distinguished from spring wood because summer wood

• A) contains wide vessels with thin walls, and is lighter than spring wood.
• B) is impregnated with suberin, whereas spring wood is not.
• C) contains thick-walled tracheids that give it strength, and is more dense than spring wood.
• D) contains only thin-walled xylem, and is lighter than spring wood.
• E) is produced during the summer when moisture is plentiful, and contains only heavy fibers and thick-walled tracheids.

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