Question

how can we observe onion cell under microscope ?​

Answer 1

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Large, rectangular interlocking cells,

Clearly visible distinct cell walls

surrounding the cells,

Dark stained nucleus,

Large vacuoles at the center,

Small granules may be observed inside the cells (within the cytoplasm).

The layers of an onion contain simple sugars (carbohydrates) some of which are stored as starch (starch granules). Given that iodine tends to bind to starch, it stains the starch granules when the two come in to contact making them visible.

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