Give reasons for the following.
(a) The cell is called the structional
and functional unit of life.
more
(b) plant cells are more rigid
than the
animal cells.
Answers
Answer:
A cell is called as the fundamental structural and functional unit of life because they form the building blocks (bricks) of the main organs of organisms. The cells are the basic parts of all organs. These cells in group forms tissues that have specialized function and these tissues together form the organs.
It is functional unit of life because the cells carry out all the functions of body (physiological, biochemical. genetic and other functions).
Plant cells are more rigid than the animaal cell wass due to the presene of cell wall. Plant cells are made up of an inner and outer cell layer made up of cellulose and lipids.
Answer:
a)The cell is called structural and functional unit of life because all living organisms are made up of cell. since the entire living organisms have cell as their building block it is called the structural unit.and because all the physiological, biochemical, genetic and metabolic activities takes place inside the cell it is called the functional unit.
b) Plant cells are more rigid than animal cell because of presence of one more outer layer in comparison to animal cell. The outer layer in plant cell is called cell wall which is made up of cellulose