Question

give reason for the following:
(a) the cell is called the structural and functional units of life.
(b)plant cell are more rigid than animal cell.​

Answer 1

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. ... It is functional unit of life because the cells carry out all the functions of body (physiological, biochemical

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Answer 2

$\Large{\rm{\underline{\underline{\red{Reasons\: for\: Above\: statements}}}}}$

✏ 1) The cell is called the structural and functional unit of life because it is responsible for all the life processes. All the life processes taking place in our body is the sum total of activities taking place inside the cell. All the living organisms are made of cell, hence cell is also known building blocks of an organism's body. They form essential nutrients which have special functions in our body. According to R. Virchow, All the cells arise from pre existing cells.

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✏ 2) The plant cell are more rigid than animal cell because they have a additional outer covering surrounding the cell which helps in maintaining the shape of the cell. This is known as $\large{\green{\rm{Cell \:wall}}}$. The Cell wall prevents plasmolysis and bursting under respective conditions. The cell wall is absent in animal cell. The cell wall is made up of Cellulose in plants. They provides mechanical support to the cell. They are dead and permeable to different solute and solvents.

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