B3.2 Transport Quiz
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5 questions, one answer each
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1. A vessel has a wall 1 mm thick and a lumen 2 mm wide, round in section. It is most likely:
- A. A capillary
- B. A vein
- C. An artery
- D. A lymph duct
2. A student counts 19 beats in 15 seconds. Heart rate?
- A. 19 bpm
- B. 38 bpm
- C. 57 bpm
- D. 76 bpm
3. Correlation coefficient between two variables is r = −0.05. This shows:
- A. A strong negative correlation
- B. Almost no correlation
- C. That one variable causes the other
- D. A strong positive correlation
4. What pulls water up the xylem during transpiration?
- A. Root pressure
- B. Tension generated by evaporation from leaves
- C. Active transport in xylem
- D. Gravity
5. In a dicot stem, vascular bundles are arranged:
- A. In a central star shape
- B. In a ring near the edge
- C. Scattered randomly
- D. Only in the epidermis