Activity 5.1| Onion peel |Temporary Mount of Onion peel| Class 9 Science

Let us take a small piece from an onion
bulb. With the help of a pair of forceps,
we can peel off the skin (called
epidermis) from the concave side (inner
layer) of the onion. This layer can be
put immediately in a watch-glass
containing water. This will prevent the
peel from getting folded or getting dry.
What do we do with this peel?
• Let us take a glass slide, put a drop of
water on it and transfer a small piece
of the peel from the watch glass to the
slide. Make sure that the peel is
perfectly flat on the slide. A thin camel
hair paintbrush might be necessary to
help transfer the peel. Now we put a
drop of safranin solution on this piece
followed by a cover slip. Take care to
avoid air bubbles while putting the
cover slip with the help of a mounting
needle. Ask your teacher for help. We
have prepared a temporary mount of
onion peel. We can observe this slide
under low power followed by high
powers of a compound microscope

[@BLC.25]

Why didn't you use coverslip

[@BloxyVansh]

Why didn't u use cover slip