Which plant is best adapted to prevent an embolism in their xylem tubes?

A) a banana plant in a very warm climate
B) a spruce tree with narrow, tapering tracheids
C) a maple tree with wide, perforated vessel elements
D) a cattail in a marsh


B

Biology & Microbiology

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The largest vessel in the body is the ____

a. carotid artery b. superior vena cava c. femoral artery d. ascending aorta e. coronary artery

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Cell proliferation in culture is normally limited by

A) cytophagy. B) quorum sensing. C) contact inhibition. D) competition. E) nutrient limitation.

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How might a virus pick up a human oncogene?

a. Specialized transduction b. Transformation c. Reverse transcription d. Biosynthesis e. Viral conversion

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