Glycerin keeps cheek cells moist, prevents drying and improves visibility. It also holds the cover slip in place, ensuring a clear and stable view of the stained cells under the microscope.
Class 8 Science Curiosity Chapter 2 The Invisible Living World: Beyond Our Naked Eye NCERT solutions
Class 8 Science Grade 8 Chapter 2 The Invisible Living World: Beyond Our Naked Eye question answer
After staining cheek cells with methylene blue, glycerin is added to preserve the cells during microscopic observation. It keeps the cells hydrated, preventing them from shrinking or drying. It also helps the cover slip stay fixed, avoiding movement of the sample. Glycerin improves image clarity and maintains the original shape and structure of the cells for better learning.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 2 The Invisible Living World: Beyond Our Naked Eye Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions/class-8/science/