Question 1 Name the smallest and largest cell?
Question 2 Name the largest cell in human body?
Variety in size of cell
The cells are of many different sizes.The cells in living organism may be as small as a millionth of a metre or it may be as large as a few centimetres.
Most of the cells are extremely small in size and hence cannot be seen by naked eyes.Most of the cells found in living organism have to be enlarged by using a microscope before they can be seen by us.
The bacteria cells have a length of 0.1 to 0.5 micrometer.Bacteria mycoplasma is the smallest cell having the size of only 0.1 micrometer.
Even the long cells are so thin that they can be seen only with a microscope.The muscle cell in animals are a few centimetres long and the nerve cells are more than a metre long, but they are are so thin that they can only be seen with the help a microscope.
Some of the cells are big and can be seen easily with naked eyes.The bird’s egg are very large cells.Each egg of the bird is a single cell.
The hen’s egg is a single cell.The hen’s egg is quite big.We can see the single cell called hen’s egg with naked eye.
The biggest cell is the ostrich egg.The ostrich egg can be as much as 17 centimetres long.
In Human body, some blood cells are the smallest and the nerve cells are the longest.The ostrich egg is actually 17 cm * 13 cm.The size of cells has no relation with the size of the body of an animal.
Leave a Reply