Question

why is iodine used for preparing slide for microscopic observation​

Answer 1

Answer:

A small square or circle of thin glass called a coverslip is placed over the specimen. It prevents the slide from drying out when it's being examined. Iodine stain can be used to stain plant cells to make the internal structures more visible. ... This stains the nucleus blue.

Answer 2

iodine tends to bind to starch, it stains the starch granules when the two come in to contact making them visible. Although onions may not have as much starch as potato and other plants, the stain (iodine) allows for the little starch molecules to be visible under the microscope.

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