Question

Why should we stain the onion peel?

Answer 1

Iodine is used in staining cells of an onion peel on the slide due to following reason. *Onion bulb is made up of scaly leaves which store starch granules in their cytoplasm of the cells. *Iodine binds to starch in the granules and develops blue black colour.

Answer 2

$\huge{\underline{\underline{\sf{\red{Answer:-}}}}}$

• 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.

• The onion cell is a plant cell that can be obtained by peeling off an onion.

• Onion cellsexhibit a brick-like shape under the microscope. It has a cell wall, cell membrane, cytoplasm, nucleus, and a large vacuole.

⠀

Hope it helps... ¯\_(ツ)_/¯