BI-775
Photosynthesis equation
Biology · Secondary 3 · Hard · Photosynthesis equation
A potted plant is kept in the dark for 24 hours and then one leaf is partly covered with black paper. The plant is placed in bright light with normal air for 4 hours, then the leaf is tested for starch. Why was the plant kept in the dark for 24 hours before the experiment?
- To ensure that starch was not made before the experiment began.
- To ensure that all starch found is produced during the experiment only.
- To allow chlorophyll to recover from previous light exposure.
- To increase the rate of respiration during the experiment.
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