Xylem and Phloem Quiz
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5 questions, one answer each
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1. What does xylem transport?
- A. Sucrose and amino acids
- B. Water and mineral ions
- C. Oxygen and carbon dioxide
- D. Urea and excess water
2. What does phloem transport?
- A. Water and mineral ions
- B. Sucrose and amino acids
- C. Glucose and oxygen
- D. Carbon dioxide and water
3. Why do xylem vessels have no cross walls between cells?
- A. To allow lateral movement of water
- B. To form one continuous tube for easy water flow
- C. To increase surface area for absorption
- D. To store starch
4. What is the function of a root hair cell's long thin extension?
- A. To photosynthesise
- B. To increase surface area for absorbing water and mineral ions
- C. To provide mechanical support
- D. To transport sucrose
5. A student traces the pathway of a dye through a plant. Which order correctly shows the pathway of water?
- A. Xylem, root hair cells, mesophyll cells, root cortex cells
- B. Root hair cells, root cortex cells, xylem, mesophyll cells
- C. Mesophyll cells, xylem, root cortex cells, root hair cells
- D. Root cortex cells, root hair cells, mesophyll cells, xylem