Home | | Science 6th Std | Student Activities

# Student Activities

6th Science : Term 2 Unit 5 : The Cell :

Activity 1:

Aim: To observe the structure of a single cell (Hen’s egg).

Materials Needed: A hen’s egg and a plate.

Method: Crack the shell and break open the egg in a plate.

Observation: The egg has a yellow part and a transparent part surrounding it. The white transparent part (albumin) is jelly-like and represents the cell’s cytoplasm, while the yellow part (yolk) is thicker and represents the cell’s nucleus. On the internal side of the shell can be seen a thin membrane-like structure, which represents the cell membrane.

Activity 2:

Aim: To observe onion peel cells under a microscope

Materials Required: Glass slide, cover slip, onion, iodine solution, knife and microscope.

Procedure: Take an onion and cut it into two halves along its length. Take out one of its fleshy leaves. With the help of a pair of forceps, remove a transparent, thin peel from the inner surface of the leaf. Take a glass slide and put a drop of water at the centre. Place the peel on the drop of water. Pour a drop of iodine solution on the peel. Now place a cover slip over the material. Observe under the microscope.

Observation: You will be able to see rectangular cells of the onion peel, with a nucleus in each of them.

Activity 3:

Aim:

To rectify the variation between 2-D shape and 3-D shape.

Material required:

Polythene bag, water, marble ball (golli gundu)

Procedure:

If you draw a picture in round shape.

It will be called 2-Dimenstional picture.

If you draw a picture in spherical shape it is called 3-dimenstional.

Result:

Now you understand your misconceptions. So the animal cells are spherical in shape and structure, not in a round shape.

Tags : The Cell | Term 2 Unit 5 | 6th Science , 6th Science : Term 2 Unit 5 : The Cell
Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail
6th Science : Term 2 Unit 5 : The Cell : Student Activities | The Cell | Term 2 Unit 5 | 6th Science