Activity 8.3 Class 8 Science Chapter 8 Solution

Activity 8.3 Class 8 Science Cell- Structure and Functions

In this post, you will find NCERT Science Class 8 Chapter 8 Cell- Structure and Functions Activity solutions. 

You are suggested to study NCERT activity 8.3 class 8 science explanation with a conclusion so that you can attempt questions based on activity 8.3 class 8 science.

Activity 8.3 Class 8 Science

   ·     In  order to observe the basic components of the cell, take an onion bulb.

   ·     Remove the dry pink coverings (peels).

   ·     You can easily separate these from the fleshy white layers of the bulb with the help of forceps or even with your hand.

   ·     You can also break the onion bulb and separate out thin layers.

   ·     Place a small piece of the thin onion peel in a drop of water on a glass slide.

   ·     The thin layer can be cut into smaller pieces with the help of a blade or forceps.

   ·     Add a drop of methylene blue solution to the layer and place a coverslip on it.

   ·     While placing the coverslip ensure that there are no air bubbles under the coverslip. Observe the slide under the microscope.

   ·     Draw and label.

      

Observation and explanation 

Under the microscope, we can see the basic structure of the cell of onion peel. The boundary of the onion cell is the cell membrane that is covered with a thick cell wall.

A round body can be seen in the center of the cell, the nucleus of the cell.

A jelly-like substance found between the nucleus and cell membrane is called cytoplasm. Some large empty spaces can be seen within the cytoplasm, these are vacuoles.

Conclusion 

Basic cell structure and cell organelles can be seen under the microscope.

 

 Related Topics 

1. Activity 8.4

2. Activity 8.2