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Home Q & A Board Biology-Related Homework Help General Biology
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dracko dracko
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6 years ago
What is characteristic of xylem cells that are mature?
A) They have only primary walls made of cellulose.
B) They have only secondary walls made of lignin.
C) They contain cytoplasm at maturity.
D) They have both primary and secondary walls.
E) All of these answers apply.
Textbook 
Biological Science, Canadian Edition

Biological Science, Canadian Edition


Edition: 2nd
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adamdidthisadamdidthis
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6 years ago
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dracko Author
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6 years ago
You make an excellent tutor!
54321abs
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Thanks for your help!!
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Helped a lot
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