Which one is stained using carmine?

Bacteria

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Diatoms

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Chromosomes

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Viruses

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Solution

The correct option is D Chromosomes
Carmine is a basic dye that is prepared from the insect coccus cacti.
To stain plant chromosomes, a 1% solution of carmine in 45% acetic acid is used.
If the material is to be analyzed immediately, fix and stain the tissue in one step using the 1% acetocarmine solution.
Hence chromosomes are stained using carmine.
So, the correct answer is 'Chromosomes'.

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