Which of the following statements is true regarding secondary growth in vascular plants? Select all correct choices
A. Secondary growth depends only on the
vascular cambium.
B. Secondary growth depends only on the
cork cambium.
C. Secondary growth depends on both the
vascular and cork cambia.
D. Secondary growth causes a plant to grow
in diameter (not height).
E. Secondary growth causes a plant to grow
in height (not diameter).
C,D
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Which of the following statements is not true of protists?
A. Moisture is absolutely essential to their existence. B. They make up a substantial fraction of the marine plankton. C. They are not known to cause diseases of humans. D. Most are free living.
Which of the following organisms can act as plant pathogens? Select all correct choices
A. mistletoe B. nematodes C. tobacco plants D. bacteria E. P. ferruginea ants
The universal donor is indicated by
a. column W. b. column Y. c. column Z. d. row W. e. row Z.
What type of plant tissue includes the starch-storing tissues, such as white potatoes?
A) xylem B) phloem C) meristematic tissue D) ground tissue