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Apart from what's written in the article, stomata typically close at night as there's no sunlight so no photosynthesis. Respiration however continues 24/7 but the rates vary. During the night, the rate of respiration drops since stomata are closed. But it never drops to 0. Respiration still happens as oxygen exchange can still be done through the following ...


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The curving of stems towards light sources is called phototropism. It is a hormonal phenomena that responds to light. Just like human beings, plants have hormones in them. The hormone that makes plant respond to light is auxin. It is a type of growth hormone, causing growth in the parts where it accumulates, and it does so in regions away from light. So, ...


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