alleryWhich of the following is not a role of transpiration?
APulling water and minerals upward through xylem
BCooling of leaves on hot, sunny afternoons
CManufacture of food from carbon dioxide and water
DMaintenance of turgor in actively growing cells
Answer & Solution
Correct answer: C. Manufacture of food from carbon dioxide and water
1. Transpiration cools the leaf surface by evaporation.
2. It creates the pull that lifts the xylem water column.
3. It also keeps cells turgid by drawing in fresh water.
4. Food manufacture is photosynthesis, not transpiration, so option A is the non-role.
_Source: Selina Concise Biology Class 8, Ch on Transport in Plants (Mistral OCR'd PDF), Significance of Transpiration_
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