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Question
A plant cell has potential to develop into a full plant. This is called as
A plant cell has potential to develop into a full plant. This is called as
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Solution
The correct option is C Totipotency
Totipotency is the ability to divide and produce new 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 which makes option A correct. Genetic engineering includes techniques for creation recombinant DNA which carries DNA from two different sources. It also includes the production of a line of organisms all carrying the same recombinant DNA molecule; because it grows and amplifies a line of genetically identical organisms, the rDNA molecule is also amplified and therefore the name gene cloning. Option B is incorrect. Tissue culture refers to the aseptic culture of cells/tissues/organs or their parts under in vitro conditions. Since a small sized material (the explant) is used for propagation or cloning of plants, tissues culture is also known as Micropropagation. Option C is incorrect as it is not a natural process. The ability of living organisms to repair/replace/restore the damaged or lost body part or to form new organism from small fragment is referred to as regeneration. Option D is incorrect ability of regeneration is the result of totipotency of cells. Thus, the correct answer is option A.
Totipotency is the ability to divide and produce new 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 which makes option A correct. Genetic engineering includes techniques for creation recombinant DNA which carries DNA from two different sources. It also includes the production of a line of organisms all carrying the same recombinant DNA molecule; because it grows and amplifies a line of genetically identical organisms, the rDNA molecule is also amplified and therefore the name gene cloning. Option B is incorrect. Tissue culture refers to the aseptic culture of cells/tissues/organs or their parts under in vitro conditions. Since a small sized material (the explant) is used for propagation or cloning of plants, tissues culture is also known as Micropropagation. Option C is incorrect as it is not a natural process. The ability of living organisms to repair/replace/restore the damaged or lost body part or to form new organism from small fragment is referred to as regeneration. Option D is incorrect ability of regeneration is the result of totipotency of cells.
Thus, the correct answer is option A.
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