A plant gains mass primarily through a process called photosynthesis. Here’s how it works:
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Photosynthesis: Plants absorb sunlight through their leaves, capturing energy from the sun. They also take in carbon dioxide from the air through tiny openings called stomata and water from the soil through their roots.
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Chemical Reactions: Inside the plant cells, these ingredients—carbon dioxide and water—undergo a series of chemical reactions powered by sunlight. During this process, plants convert carbon dioxide and water into glucose (a type of sugar) and oxygen. The glucose serves as the primary energy source for the plant.
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Growth and Mass Increase: The glucose produced during photosynthesis not only fuels the plant's growth but also serves as a building block for various organic compounds. As the plant uses glucose to build proteins, carbohydrates, and other essential molecules, it increases in size and mass.
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Cell Division: As the plant absorbs nutrients from the soil (like nitrogen, phosphorus, and potassium), it can grow new cells through a process called cell division. This cell growth and division contribute to the overall mass of the plant.
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Accumulation of Nutrients: As the plant continues to photosynthesize and absorb nutrients and minerals from the soil, these components also add to its mass. Over time, this process leads to a significant increase in weight as the plant continues to grow.
In summary, a plant gains mass through photosynthesis, converting sunlight, carbon dioxide, and water into glucose and other organic compounds that contribute to its growth and development.