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    Biology Study Set 16
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    Exam 27: Seedless Plants
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    A Key Step in the Evolution of Vascular Plants Was
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A Key Step in the Evolution of Vascular Plants Was

Question 70

Question 70

Multiple Choice

A key step in the evolution of vascular plants was the ability to produce ____, a strengthening polymer in the walls of cells that provide support and conduction.


A) cutin
B) chitin
C) lignin
D) actin
E) cellulose

Correct Answer:

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