In plant tissue culture, the callus tissue can be regenerated into complete plantlets primarily by altering the concentration of
A
Vitamins
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B
Sugars
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C
Amino acids
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D
Hormones
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Solution
The correct option is D Hormones Callus is an irregular, unorganised, and undifferentiated mass of actively dividing cells produced in tissue culture. The explant cells undergo dedifferentiation and produce callus. The callus culture is maintained on an agar medium with the phytohormones or plant growth regulators like the auxins.
The dedifferentiated explant cells are redifferentiated to give rise to whole new plants by altering the concentrations of the phytohormones.