A layer of oil was spread on the underside of all the leaves of a plant. After a few days, the plant died. Which process was primarily affected?
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Worked Solution
Step 1: Most stomata (tiny pores) are found on the underside of leaves.
Step [2-9]: Stomata allow the plant to take in carbon dioxide for photosynthesis and release oxygen.
Step [2-9]: Blocking them with oil prevents gas exchange, stopping photosynthesis and eventually killing the plant.
Correct answer: Exchange of gases through stomata
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