Give reasons for the following:(a) The cell is called the structural and functional unit of life.(b) Plant cells are more rigid than the animal cells.


(a) Cells are the basic units or building blocks of life.

It is called a structural, fundamental, and biological unit of all living beings. because the body of all the organisms is made up of cells.

It is a functional unit of life because all the functions of the body (physiological, biochemical, genetic, and other metabolic functions) are carried out by cells.

All the living organisms are made of different types of cells. The human body is made of trillions of cells.

For example, The blood contains RBC and the primary function of this cell is to transport oxygen and carbon dioxide.

(b) The plant cell is more rigid than the animal cell because it contains a cell wall that is absent in animal cells.

A cell wall is the outermost, structural layer surrounding plant cells and certain microbes. It is present outside the cell membrane. Its main function is to provide the structural support to the cell, provide protection, and act as a filter.

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Updated on: 16-Jan-2023

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