There are living cells.But we know that cell is the basic unit of life.The independent living cell are called unicellular organisms.Ex-Amoeba.There are independent living tissue also.Ex.Fungi. Similarly is there any independent living organ??

As we know the sequence

Organism- organ systems - organ - tissue - cell

Q. Which of the following statement(s) is/are correct?
I. Unicellular organisms are incapable of independent existence.
II. Unicellular organisms cannot perform the essential functions of life.
III. Anything less than a complete structure of a cell does not ensure independent living.
IV. Cell is the fundamental structural and functional unit of all living organisms.

Q. Explain- 'Cells are the basic structural units of living organisms'.

Q. State whether the following statements are true or false :
(a) Unicellular organisms have one-celled body.
(b) Muscle cells are branched.
(c) Amoeba has irregular shape.
(d) All the cells in our body are alike.
(e) A hen's egg is a group of cells.
(f) The basic living unit of an organism is organ.