what are the precautions to be follow while proving oxygen is produced during photosynthesis
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To prove oxygen is evovled during photosynthesis in the presence of sunlight. -While removing testtube ,place your thumb near mouth of testtube to prevent escape of gas(oxygen) evolved and remove gently. PROCEDURE:1)Place hydrilla plant twigs in a short stemmed funnel and keep it in a beaker containing water
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