what is stroma and grana
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Stroma, in botany, refers to the colorless fluid surrounding the grana within the chloroplast. Within the stroma are grana (stacks of thylakoid), and the sub-organelles or daughter cells, where photosynthesis is commenced before the chemical changes are completed in the stroma. Photosynthesis occurs in two stages.
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Stroma is the tissue of an epithelial organ, tumour, gonad, etc... consisting of blood vessels and connective tissues.
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Grana is the stacks of thylakoids embedded in the stroma of chloroplast.
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