Unicellular and Multicellular
Unicellular and Multicellular Organisms
Based on the number of cells organisms can be differentiated into two types :- Unicellular and Multicellular.
The main differences between the two type of cells are listed below in the table.
Unicellular organisms |
Multicellular Organisms |
|
|
Definition |
These are formed of single cell. | These are formed of more than one cell. |
| Cell size | 10 - 100 micrometers | 5 - 10 micrometers |
| Origin | They have evolved earlier around 3.5 thousand million years ago. | They have evolved from unicellular organisms 1.2 thousand million years ago. |
Based on the number of cells organisms can be differentiated in ______________________. | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following are correct : (a) Bacteria and amoeba unicellular organism. (b) Octopus and petromyzon multicellular organism. | |||
| Right Option : C | |||
| View Explanation | |||
The example of unicellular organism are _____________________ . | |||
| Right Option : B | |||
| View Explanation | |||
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