NIOS Class 10 Science Activity 21.4 Building Blocks of Life- Cell and Tissues

As we studied in the chapter that plants grow in length due to special tissues present in their growing ends, which are called apices. In this activity, we will identify the apices present in the weed plant.

Building Blocks of Life- Cell and Tissues Activity Solution

This activity is based on the NIOS Class 10 science and technology (212) Chapter 21- Building Blocks of Life- Cell and Tissues Module 5- The Living World.

Aim

To observe and identify the apices in a weed plant.

Materials Required

   1.  Small weed plant

   2. Water

   3. Magnifying glass

   4. Notebook and pencil

 

Procedure

1. We gently uproot a small weed from the soil.

2. Wash the roots to remove soil.

3. Observe the tip of the root and stem.

4. Note the pointed growing ends present at both tips.

5. Draw a neat diagram.

Observation

1. A pointed root apex is seen at the tips of the root.

2. A shoot apex is seen at the tip of the stem.

Explanation

The tips of roots and stems contain merist

ematic tissues which are responsible for growth. These tips are called apices.

Cells present in apices divide rapidly and increase the length of the plant downward and upward.

Conclusion

We can conclude that apices are the growing regions of the plant and have meristematic tissues that are responsible for growth.

NIOS Class 10 Science Chapter 21 Activities Solutions

S.N.	Topics
1	Activity 21.1
2	Activity 21.2
3	Activity 21.3
4	Activity 21.4
5	Activity 21.5