Statement I : Amoeba is a unicellular organism and the single cell performs all functions of a living organism. Statement I : Cell is the fundamental unit of living organism.

Statement I is true as Amoeba is a unicellular organism where a single cell performs all essential life functions, including digestion, respiration, excretion, and reproduction [1]. Statement II is also true, as the cell is the fundamental structural and functional unit of all living organisms [2]. The relationship between the two is explanatory: because the cell is the basic unit of life capable of independent existence and performing all necessary life processes, a single-celled organism like Amoeba can function as a complete living entity. Unicellular organisms demonstrate that a single cell possesses the full capability to sustain life independently, which directly supports the definition of the cell as the fundamental unit of life [1]. Thus, Statement II provides the underlying biological principle that explains why Statement I is possible.

Sources

1. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 2: The Invisible Living World: Beyond Our Naked Eye > 2.5 Why Is Cell Considered to Be a Basic Unit of Life? > p. 23
2. [2] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 2: The Invisible Living World: Beyond Our Naked Eye > Snapshots > p. 24