In order to observe protozoa like amoeba and paramecium, collect the petals of some flowers. Place them in water for a day or two. Observe a drop of this water under a microscope.

In order to observe protozoa like amoeba and paramecium, collect the petals of some flowers. Place them in water for a day or two. Observe a drop of this water under a microscope.

Peel off the thin membrane inside a layer of onion. Place it on a glass slide and put a drop of iodine on it. Cover it with a cover slip. Now your slide is ready. Observe it under a microscope. You will see cells which have a nucleus and are enclosed in a cell wall. Draw the onion cells as you see them under the microscope.

Fill in the blanks.

i. The name 'cell' was first used by the scientist ……………….

ii. The cell wall of the plant cell consists of the substance ……………….

iii. The cell wall is found only in the ………………. cell.

iv. ………………. is the powerhouse of the cell.

v. The cell membrane is ……………….