Question

A totipotent cell means

• A. An undifferentiated cell capable of developing into a system or entire plant
• B. A differentiated cell capable of developing into an organ
• C. An undifferentiated cell capable of developing into complete embryo
• D. Cell which lacks the capability to differentiate into an organ or system

Answer 1

The correct option is A An undifferentiated cell capable of developing into a system or entire plant

A totipotent cell means an undifferentiated cell capable of developing into a system or entire plant. The totipotent cells have immense cytoplasm and an active nucleus which allows rapid division. When the totipotent cells are cultured on nutrient media they undergo rigorous cell division and cell differentiation and finally lead to morphogenesis. For example, callus is treated with the growth hormones to allow the cell division and differentiation. Callus when treated with auxin it promotes rooting and when it is treated with cytokinin it stimulates cell maturation, differentiation and finally, promotes the development of stem. After formation of the stem, it differentiates into the different vegetative plant.

So, the correct answer is 'An undifferentiated cell capable of developing into a system or entire plant'.