Which stain do you use to observe onion root cells ?

Safranin

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Acetocarmine

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Iodine

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Methylene blue

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Solution

The correct option is B Acetocarmine
B. Acetocarmine
EXPLANATION: Acetocarmine is a non-specific nuclear stain. It is a saturated solution of carmine in 45% acetic acid. This stain is used for microscopic studies to enhance the contrast of specific biological components in a sample. Acetocarmine is especially used to stain chromosomes apart from the cytoplasm and also used to visualize chromosomes in mitotic studies. This is a dye obtained from insects.

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