Water Uptake Quiz
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5 questions, one answer each
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1. Why do root hair cells absorb water effectively?
- A. They contain chloroplasts
- B. They have a large surface area
- C. They contain lignin
- D. They are joined end to end
2. What is the correct pathway of water through a plant?
- A. Xylem, mesophyll cells, root hair cells, root cortex cells
- B. Root hair cells, root cortex cells, xylem, mesophyll cells
- C. Root cortex cells, xylem, root hair cells, mesophyll cells
- D. Mesophyll cells, root hair cells, xylem, root cortex cells
3. How can a stain be used to investigate water movement in a plant?
- A. It changes the colour of chlorophyll
- B. It is drawn up through the xylem, revealing the water pathway
- C. It stops transpiration completely
- D. It dissolves the cell walls
4. What causes the transpiration pull?
- A. Active transport of water at the roots
- B. Water loss from the leaves during transpiration, pulling the water column upward
- C. Osmosis in the xylem cells
- D. Photosynthesis in the leaf
5. Water molecules in the xylem stay connected as a continuous column while being pulled upward. Which property of water explains this?
- A. Water is a good solvent
- B. Cohesion - forces of attraction between water molecules
- C. Water has a high boiling point
- D. Water is less dense as a solid