Question

Cellular totipotency is demonstrated by

• A. Only gymnosperm cells
• B. All plant cells
• C. All eukaryotic cells
• D. Only bacterial cells

Answer 1

The correct option is B All plant cells

The ability of a cell to grow and develop into a multicellular organism is termed as cellular totipotency. All adult organisms develop from a single zygote the resulting cells grow and differentiate to perform specific functions and loose the totipotency. However, the ability of a differentiated cell to convert into a totipotent cell is termed as dedifferentiation. All plants cells have the ability to resume their totipotency by dedifferentiation and to exhibit cellular totipotency till they are viable.
Animal cells exhibit irreversible differentiation and a differentiated cell never resume totipotency. A bacterial cell can divide and produce a new bacterial cell which means that they are totipotent but they are not the only totipotent organisms; plant cells are also totipotent.
Thus, the correct answer is option B.