'Cellular organisation of the body is the defining feature of life forms'. Justify.

Dear Student,

The statement says cellular organisation of the body is defining feature of life forms.

• This is because all living organisms are made of minimum one and maximum many cells. 
• Simpler organisms which has single cell as their body are called as unicellular organism. Example; Amoeba, Yeast. 
• While higher organisms are made of many cells like humans. 
• Thus we can say that from most simpler form to most complex form of an organism is made of cell.
• Hence we can say that there is no life form without cellular structure. 

This explains the given statement. 

Regards.