Safranin is a chemical stain used during microscope slide preparation. When added to onion peel cells, it binds to the cell walls and nucleus, turning them reddish. This provides contrast, making the cell structures stand out more clearly under the microscope. Without staining, the cells are mostlyRead more
Safranin is a chemical stain used during microscope slide preparation. When added to onion peel cells, it binds to the cell walls and nucleus, turning them reddish. This provides contrast, making the cell structures stand out more clearly under the microscope. Without staining, the cells are mostly transparent and hard to observe in detail, making safranin essential for biological studies.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 2 The Invisible Living World: Beyond Our Naked Eye Extra Questions & Answer:
Glycerin is used while preparing slides because it keeps the onion peel moist and prevents air bubbles from forming. It acts as a mounting medium that holds the specimen in place and improves visibility. Since cell structures can dry out quickly and shrink, glycerin helps maintain their shape and clRead more
Glycerin is used while preparing slides because it keeps the onion peel moist and prevents air bubbles from forming. It acts as a mounting medium that holds the specimen in place and improves visibility. Since cell structures can dry out quickly and shrink, glycerin helps maintain their shape and clarity during observation, ensuring accurate microscopic examination.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 2 The Invisible Living World: Beyond Our Naked Eye Extra Questions & Answer:
Blotting paper helps absorb extra glycerin from the slide’s edges. Too much glycerin can make the cover slip slide or produce a blurry image under the microscope. By removing the excess, the specimen remains stable and the structures inside the cells can be seen more clearly. This step ensures a proRead more
Blotting paper helps absorb extra glycerin from the slide’s edges. Too much glycerin can make the cover slip slide or produce a blurry image under the microscope. By removing the excess, the specimen remains stable and the structures inside the cells can be seen more clearly. This step ensures a proper, high-quality observation without smudging or movement of the sample.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 2 The Invisible Living World: Beyond Our Naked Eye Extra Questions & Answer:
When viewed under a microscope, onion peel cells look like brick-like rectangular boxes arranged side by side. They form a tightly packed organized structure. Each cell has a clear outer boundary (cell wall), a nucleus stained with dye and visible cytoplasm. This pattern highlights how plant cells aRead more
When viewed under a microscope, onion peel cells look like brick-like rectangular boxes arranged side by side. They form a tightly packed organized structure. Each cell has a clear outer boundary (cell wall), a nucleus stained with dye and visible cytoplasm. This pattern highlights how plant cells are structured and connected in tissues for support and function.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 2 The Invisible Living World: Beyond Our Naked Eye Extra Questions & Answer:
Plant cells, when seen under a microscope, resemble bricks laid in a wall. They are rectangular and tightly packed, forming layers of tissue. Each cell has a rigid cell wall that gives it shape and strength, just as bricks do in construction. This arrangement helps provide support to plant organs liRead more
Plant cells, when seen under a microscope, resemble bricks laid in a wall. They are rectangular and tightly packed, forming layers of tissue. Each cell has a rigid cell wall that gives it shape and strength, just as bricks do in construction. This arrangement helps provide support to plant organs like leaves and stems, making the comparison very accurate.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 2 The Invisible Living World: Beyond Our Naked Eye Extra Questions & Answer:
What is the role of safranin in observing onion peel cells?
Safranin is a chemical stain used during microscope slide preparation. When added to onion peel cells, it binds to the cell walls and nucleus, turning them reddish. This provides contrast, making the cell structures stand out more clearly under the microscope. Without staining, the cells are mostlyRead more
Safranin is a chemical stain used during microscope slide preparation. When added to onion peel cells, it binds to the cell walls and nucleus, turning them reddish. This provides contrast, making the cell structures stand out more clearly under the microscope. Without staining, the cells are mostly transparent and hard to observe in detail, making safranin essential for biological studies.
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/
See lessWhy is glycerin used while preparing slides of onion cells?
Glycerin is used while preparing slides because it keeps the onion peel moist and prevents air bubbles from forming. It acts as a mounting medium that holds the specimen in place and improves visibility. Since cell structures can dry out quickly and shrink, glycerin helps maintain their shape and clRead more
Glycerin is used while preparing slides because it keeps the onion peel moist and prevents air bubbles from forming. It acts as a mounting medium that holds the specimen in place and improves visibility. Since cell structures can dry out quickly and shrink, glycerin helps maintain their shape and clarity during observation, ensuring accurate microscopic examination.
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/
See lessWhy is it important to remove excess glycerin using blotting paper?
Blotting paper helps absorb extra glycerin from the slide’s edges. Too much glycerin can make the cover slip slide or produce a blurry image under the microscope. By removing the excess, the specimen remains stable and the structures inside the cells can be seen more clearly. This step ensures a proRead more
Blotting paper helps absorb extra glycerin from the slide’s edges. Too much glycerin can make the cover slip slide or produce a blurry image under the microscope. By removing the excess, the specimen remains stable and the structures inside the cells can be seen more clearly. This step ensures a proper, high-quality observation without smudging or movement of the sample.
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/
See lessHow are the onion cells arranged when seen under a microscope?
When viewed under a microscope, onion peel cells look like brick-like rectangular boxes arranged side by side. They form a tightly packed organized structure. Each cell has a clear outer boundary (cell wall), a nucleus stained with dye and visible cytoplasm. This pattern highlights how plant cells aRead more
When viewed under a microscope, onion peel cells look like brick-like rectangular boxes arranged side by side. They form a tightly packed organized structure. Each cell has a clear outer boundary (cell wall), a nucleus stained with dye and visible cytoplasm. This pattern highlights how plant cells are structured and connected in tissues for support and function.
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/
See lessWhat similarities are seen between a brick wall and plant cells?
Plant cells, when seen under a microscope, resemble bricks laid in a wall. They are rectangular and tightly packed, forming layers of tissue. Each cell has a rigid cell wall that gives it shape and strength, just as bricks do in construction. This arrangement helps provide support to plant organs liRead more
Plant cells, when seen under a microscope, resemble bricks laid in a wall. They are rectangular and tightly packed, forming layers of tissue. Each cell has a rigid cell wall that gives it shape and strength, just as bricks do in construction. This arrangement helps provide support to plant organs like leaves and stems, making the comparison very accurate.
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/
See less