The smallest living part of an organism is a cell

All plants, animals and human beings are made of small units called cells




Our body has trillions of cells.

Different  cells in our body perform different function


Hence we can say that

Cell is smallest unit of life which has a definite structure and perform different functions

Why is cell called a Basic Structural unit?

It is because they are the basic unit of life

All plants and animals are made up of cells


Just as a house is made of different rooms, different rooms are made of walls and walls are made up of different bricks (non living)


Similarly, our body is made up of different organs and different organs are made up of tissues which are made of different cells (Living organism)


Hence, a cell is a basic structural unit of living organism




Who discovered cells?

It was discovered by Robert Hooke in 1665

He discovered cells in cork (bark of oak tree)

He observed cork under a microscope

He saw  different compartments which were separated by walls

He called them cells (as they looked like prison cells)




NCERT Question 1 (c)  - Indicate whether the following statements are True (T) or False (F).

The basic living unit of an organism is an organ. (T/F)

View Answer


NCERT Question 8 - ' Cells are the basic structural units of living organisms’. Explain.

View Answer


Structural units of Non-Living Organisms House Rooms Walls Bricks Structural units of Living Organisms Body Organs Tissues Cells

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo