AP BIOLOGY

Detailed explanation-1: -Totipotency is the ability of a single cell to divide and produce all of the differentiated cells in an organism. In artificial medium in tissue culture, containing appropriate nutrients, likecarbon source, amino acids, vitamins and proper balance of growth hormones, a single cell can regenerate a whole new plant.

Detailed explanation-2: -1 Totipotency. Totipotency is defined in Wikipedia as the ability of a single cell to divide and produce all the differentiated cells in an organism, including extraembryonic tissues.

Detailed explanation-3: -Media composition. Plant tissue culture media should generally contain some or all of the following components: macronutrients, micronutrients, vitamins, amino acids or nitrogen supplements, source(s) of carbon, undefined organic supplements, growth regulators and solidifying agents.

Detailed explanation-4: -So the correct answer is “Carrot".

Detailed explanation-5: -In the spectrum of cell potency, totipotency represents the cell with the greatest differentiation potential because of totipotency we can grow flower, fruit or an organism from a cell in a culture medium. So, the correct answer is “All the above".