You would like to cut down a tree in your backyard, but you have no axe or chainsaw. Instead, you cut around the trunk of the tree with a pocketknife and peel off the "bark" in a three-inch thick strip
You are confident that this action will kill the tree. Are you correct?
A. No, because only the cork and cork
cambium were removed.
B. No, because the vascular cambium will
continue to produce xylem and phloem.
C. Yes, because the phloem has been
disrupted and sugar transport will no longer
occur.
D. Yes, because the xylem has been
destroyed and sugar transport will no longer
occur.
E. Yes, because the vascular cambium has
been destroyed and xylem and phloem will no
longer be formed.
C
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Which organ of the gastrointestinal tract has a large commensal population of microorganisms?
A. Large intestine B. Small intestine C. Pancreas D. Liver E. Salivary glands
In an hydrostatic skeleton, the force of muscle contraction is applied against a rigid, external body
covering.
Indicate whether the statement is true or false.Four of the five answers listed below are related by a similar source. Select the exception
a. prolactin b. progesterone c. androgen d. estrogen e. testosterone
Which of the following viruses can establish a chronic infection of the liver which may progress to liver cancer?
A) hepatitis A B) HTLV-1 C) hepatitis C D) hepatitis D E) hepatitis E