Time remaining:
Which of the following statements is True?

Biology
Tutor: None Selected Time limit: 0 Hours

a. The vascular cambium gives rise to the outer bark

b. The vascular cambium gives rise to secondary xylem toward the outside of the stem and secondary phloem toward the inside of the stem

c. Sieve-tube members of the phloem contain a nucleus and direct the activities of the companion cell

d. The cork cambium and the vascular cambium both give rise to secondary tissue.

e. The P-protein in the xylem prevents the water and mineral conducting tubes from breaking during water transport

Apr 20th, 2015

d...........................................................................................

Apr 19th, 2015

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Apr 20th, 2015
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Apr 20th, 2015
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