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What is stroma?

Stroma, in botany, refers to the colorless fluid surrounding the grana within the chloroplast. Within the stroma are grana, stacks of thylakoids, the sub-organelles, the daughter cells, where photosynthesis is commenced before the chemical changes are completed in the stroma

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  1. the supportive tissue of an epithelial organ, tumour, gonad, etc., consisting of connective tissues and blood vessels.
    "a loose stroma of connective tissue" are called stroma.
  2. a cushion-like mass of fungal tissue, having spore-bearing structures either embedded in it or on its surface is also called stroma.                                                                                    Hope this helps.                                                                                                                                                                                                                                                     Vaibhav
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Dear student,
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Stroma commonly refers to the fluid filled inner space of chloroplasts surrounding thylakoids and grana. Initially, the stroma was thought to simply provide support for the pigmented thylakoids. However it is now known that the stroma contains starch, chloroplast DNA and ribosomes, as well as all the enzymes required for light-independent reactions of photosynthesis, also known as the Calvin cycle.
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dna guys
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the supportive tissue of an epithelial organ, tumour, gonad, etc., consisting of connective tissues and blood vessels.

Biology[edit]

  • Stroma (tissue), the connective, functionally supportive framework of a biological cell, tissue, or organ (in contrast, the parenchyma is the functional aspect of a tissue)
    • Stroma of ovary, a soft tissue, well supplied with blood, consisting of spindle-shaped cells with a small amount of connective tissue
    • Stroma of iris, fibres and cells in the iris
    • Stroma of cornea, plates of collagen fibrils in the cornea
    • Lymph node stromal cell, cells which provide a scaffold for other lymph node cells
    • Stroma of red blood cell, encloses Hemoglobin proteins within the red blood cell.
  • Stroma (fluid), the fluid in between grana, where carbohydrate-formation reactions occur in the chloroplasts of plant cells photosynthesizing. It is the structure joining two or more grana
  • Stroma (mycology), the dense structural tissue that produces fruiting bodies; made of non-vegetative (asexual) hyphae
  • Stromal cell, a connective tissue cell of any organ, supports the function of the parenchymal
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