BI-772
Photosynthesis equation
Biology · Secondary 3 · Medium · Photosynthesis equation
A potted plant is placed in a bell jar with soda lime that absorbs carbon dioxide. The plant is kept in bright light for 6 hours. A leaf is then tested for starch. What is the expected result and reason?
- No blue-black colour because CO₂ was absent so no starch formed
- Blue-black colour because light alone is enough for starch formation
- Blue-black colour because plant used oxygen instead of CO₂
- No blue-black colour because iodine cannot enter the leaf
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