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Which combination of conditions raises transpiration the most?
ANight-time with closed stomata
BLow temperature with humid still air
CHeavy rainfall around the plant
DHigh temperature with dry breeze
Answer & Solution
Correct answer: D. High temperature with dry breeze
1. The chapter lists temperature, humidity and wind as factors.
2. Heat raises evaporation; breeze removes saturated air.
3. Together they speed up transpiration the most.
4. So option A is correct.
_Source: Selina Concise Biology Class 8, Ch on Transport in Plants (Mistral OCR'd PDF), Factors Affecting Transpiration_
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