why cell is called functional and structural unit of life how does they vary with each other from number and shapes
Answers
Cells are called the structural and functional unit of life because all the living organisms are made up of cells and also all the functions taking place inside the body of organisms are performed by cells.
Cells combine to form tissues, which further combine to form organs, organs combine to form organ systems, which further combine to form organism. So, cell is the basic structural unit for all unicellular and multicellular organisms.
The different types of cell include- prokaryotic cell, plant and animal cell. The size and the shape of the cell range from millimeter to microns, which are generally based on the type of function that it performs. A cell generally varies in their shapes. A few cells are in spherical, rod, flat, concave, curved, rectangular, oval and etc. These cells can only be seen under microscope.