CBSE Class 9 Biology Practical Skills Online Test Set A

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Question 1

Question

Which one of the following is the correct sequence for preparing a mount of onion peel

Answer

(i) take out onion peel (ii) keep the peel in water in a petridish (iii) add a few drops of safranin stain and transfer to a slide (iv) add a drop of glycerine (v) cover it up with a coverslip

(i) take out onion peel (ii) cover it up with a coverslip (iii) on a petridish, add water to clean (iv) add a drop of glycerine (v) add a few drops of safranin stain

(i) take out onion peel (ii) keep the peel on the slide (iii) add a few drop of glycerine on it (iv) add few drops of safranin stain (v) cover it up with a coverslip

(i) take out onion peel (ii) Keep it on a slide and add safranin stain (iii) transfer it to water in a petridish (iv) remove water and add glycerine (v) cover it up with a coverslip