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20/10/2021 6:03 pm
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Bottles containing the undermentioned liquids were available in the laboratory. Which liquid did a student use for putting a drop on the slide before placing the coverslip while preparing the temporary mount of leaf epidermal peel?
(1) Water
(2) Safranin
(3) Glycerine
(4) Iodine
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20/10/2021 6:04 pm
Correct answer: (3) Glycerine
Explanation:
The student must have put a drop of glycerine on the slide before placing the coverslip on the slide. Glycerine is a viscous liquid which prevents the specimen from drying out and keeps it moist for longer duration. Also glycerine tends to refract light due to its refractive nature. As a result of which, the image appears clearer under the microscope.