Biology · Plant Physiology
A plant is not watered for seven days (day 1 to day 7). Leaf and root water potentials are measured every two hours starting from day 1 till day 7. Which one of the following events is LEAST LIKELY to happen?
- 1Root water potential fluctuates between day and night.
- 2Root water potential falls below leaf water potential at night.✓
- 3Leaf water potential shows a diurnal cycle of highs and lows.
- 4Pre-dawn leaf water potential declines over the 7 days.
Correct answer
Root water potential falls below leaf water potential at night.
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