Activity 5.1 Class9 Science The Fundamental Unit of Life

 Activity 5.1 Class9 Science The Fundamental Unit of Life

Activity 5.1 Class 9 Science belongs to Chapter 5The Fundamental Unit of Life Class 9 Science. You will get a complete solution with an explanation and a conclusion. After reading activity 5.1, you will be able to answer the questions based on the activity.

Activity 5.1 Class 9 Science Chapter 5

   

You are suggested to study NCERT activity 5.1 class 9 science chapter 5 explanation with a conclusion so that you can attempt questions based on the activity 5.1 class 9 science.

 

Activity 5.1 Class 9 Science

    ·     Let us take a small piece from an onion bulb. With the help of a pair of forceps. We can peel off the skin (called the epidermis) from the concave side of the onion. This layer can be put immediately in a watch glass containing water. This will prevent the peel from getting folded or getting dry. What do we do with this peel?

   ·     Let us take a glass slide, put a drop of water on it, and transfer a small piece of the peel from the watch glass to the slide. Make sure that the peel is perfectly flat on the slide. 

     A thin camel-hair paintbrush might be necessary to help transfer the peel. Now we put a drop of safranin solution on this piece followed by a cover slip. Take care to avoid air bubbles while putting the coverslip with the help of a mounting needle. We have prepared a temporary mount of onion peel. We can observe this slide under low power followed by high powers of a compound microscope.

 

Observation Activity 5.1 Class 9 Science

When we put the prepared slide under a low-power microscope, we can see large numbers of blocks(cells) side by side.  All cells are equal in shape and size.

When this slide is seen under a powered microscope. We can see the cell wall, nucleus, and vacuole in the cytoplasm clearly.

Conclusion Activity 5.1 Class 9 Science

These cells form a big structure of any living thing, so these are fundamental blocks or units of living things.

Related Topics

1. Third  activity- Activity 5.3 Class 9 Science

2. Second activity- Activity 5.2 Class 9 Science