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Plants grow with sunlight and why not with tube light?

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Yes, plants can show growth in tube light. Photosynthesis is a physico-chemical process by which plants use light energy to drive the synthesis of organic compounds, required for the growth of a plant. Plants need light, CO2, chlorophyll and water as raw materials to perform photosynthesis. In this case, we are considering tube light instead of sunlight. When we use tube light, its intensity will be lower than the sunlight but under lower light intensity, photosynthesis can take place. Thus, a plant can grow under tube light but at low rate.