The cotyledons are the first leaves appearing on the cannabis seedling after sprouting. Cotyledons are also called seed leaves and typically grow as a pair of tiny green leaves. The weed plant can begin photosynthesis because the cotyledons contain chlorophyll. The energy produced from photosynthesis allows the marijuana plant to grow. The cotyledons will shed, allowing other parts of a cannabis plant to mature and continue to grow and absorb nutrients.
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