Question

Read the assertion and reason carefully to mark the correct option in question

Assertion:Organisms are made up of cells.

Reason: Cells are structural unit of living organisms. A cell keeps its chemical composition steady within its boundary.

Answer 1

Elaboration:

Cells are the structural and functional unit of life. Every living organism from a unicellular bacteria to multicellular animals are composed of cells. The cell membrane or plasma membrane enclosing the cell and its inner constituents is selectively permeable and thus protects the inner contents of the cell. It helps the cell in maintaining a steady chemical composition. Therefore a cell is capable of maintaining its chemical composition steady within its boundary.

Final answer

A) If both assertion and reasons are true and the reason is the correct explanation of the assertion.