CBSE Book Class 8 Science Activity Inside Story

CELL-STRUCTURE & FUNCTIONS

It was already late when Anny went to bed after revising the lesson, 'Cell structure and functions'. She fell asleep immediately. After some time she heard loud noises and lot of commotion somewhere and  went to look for it. She peeped outside and what did she find? In a large open space a group of very  different looking elements were moving around with banners in hand and shouting slogans “I am the  best”, I am the best”. I am the most important part. I work so hard for the cell”. I should be called the  'Head  Office  of  the  cell."  The  cell  is  doomed  without  me”  and  so  on.  All  were  very  excited.  The  demonstration appeared somewhat familiar to Anny. Didn't she just finish studying about the cell & its  organelles! What were they trying to say? What was the fight about? In midst of all this excitement came  out a round bodied, well protected unit and addressed Anny, we are the residents of the world called cell.  Will you be kind enough to be our judge and decide who should be called the 'Head Office' of this world?  You see this is the only place we can live in and this unrest is pulling apart our world. You too have a stake  in saving us, don't you?"

Anny was seated in a high chair and the hearing of the arguments started. Each participant presented  their case arguing what he did for cell, how important is its contribution to the survival of the world of  cell is or how useful it is to the cell. Each one thought, no one else is more suitable for the post “Head  Office” of the cell. First came cell wall followed by cell membrane, plastids, chloroplast, cytoplasm,  vacuole and lastly came nucleus. Nucleus stood up and pleaded," Am I not the one who is responsible for a  bit of our fore fathers in us? and am I not the one who .....................” he continued.

After hearing all the arguments Anny thought all parts are important but nucleus is the one who should be  called the “Head Office” of the world of “Cell”. She could barely pronounce her judgement when she  heard her mother calling her to wake up and get ready for the school. She quickly got up, got ready and  went to school. She was looking forward to the assignment in science class. She was happy & very sure  that she could do well. After all she was the judge and she remembered all the argument put forward by  the organelle so well. Could you join Anny and recall the argument presented by different parts of cell?  Why did they think they alone should be considered to be the most important component? Here is the  outline. Complete them.

1. Cell wall - I am -------------- 

                     My Job is ------------

                     I am useful to the cell because ------------

Do the same exercise with each of the following :

2. Cell membrane 

3. Cytoplasm 

4. Plastids 

5. Chloroplast.

6. Vacuole

7. Nucleus

Please refer to the link below - CBSE Class 8 Science Activity Inside Story