Transport in Plants Quiz
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5 questions, one answer each
Each answer is checked as you go, with why.
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1. What controls stomata opening/closing?
- A. Root hair cells
- B. Guard cells
- C. Mesophyll cells
- D. Xylem vessels
2. What does translocation transport?
- A. Water only
- B. Mineral ions only
- C. Sucrose
- D. Oxygen
3. Increased air movement, constant light/temp — effect on water uptake?
- A. No effect
- B. Decreases as stomata close
- C. Increases as vapour removed faster
- D. Increases only if temp rises too
4. Bubble moves 40mm in 8min, tube area 2mm². Rate in mm³/min?
- A. 5
- B. 10
- C. 20
- D. 80
5. Leaves are producing excess sucrose, roots need sugar for growth. Which is source/sink?
- A. Leaves sink, roots source
- B. Leaves source, roots sink
- C. Both sources only
- D. Sucrose cannot move to roots